Diesel Version 5:WOWDiesel Standard CV's

This page lists the CV information for standard NMRA CV's 1-256 used in the WOWDiesel decoder. See Also indexed CV's (link), sound CV's

NMRA CV 1 - Short Address (Primary Address)

CV 1 dictates what the short address of the given device is. Decoders ship with a base value of 3 in this CV, and allow you to begin controlling them immediately by calling up address 3 on your command device.

NMRA CV 2 - Vstart (Start Volts)

CV 2 Adds an offset voltage to the motor so that the locomotive starts moving at a faster speed. This is useful for speed matching or for locomotives without BEMF. this setting is also useful for inefficient electric motors which have require a higher voltage to overcome "stall current." Some motors may lurch or repeatedly stop and start if the start volts are too low. Increasing the start volts can improve performance by increasing the low-end power.

From the NMRA standard:

Vstart is used to define the voltage drive level used as the start voltage on the motor. The voltage drive levels shall correspond linearly to the voltage applied to the motor at speed step one, as a fraction of available rectified supply voltage. When the voltage drive level is equal to zero, there shall be zero voltage applied to the motor. When it is at maximum (255), the full available rectified voltage shall be applied.

NMRA CV 3 - Acceleration Rate

Determines the decoder's acceleration rate. The higher the value the longer it takes to accelerate.
This CV overwritten when the "Momentum Function" is pressed The formula for the acceleration rate shall be equal to (the contents of CV#3*.896)/(number of speed steps in use). For example, if the contents of CV#3 =2, then the acceleration is 0.064 sec/step for a decoder currently using 28 speed steps. If the content of this parameter equals "0" then there is no programmed momentum during acceleration.

NMRA CV 4 - Deceleration Rate

Determines the decoder's deceleration rate. The formula for the deceleration rate shall be equal to (the contents of CV#4*.896)/(number of speed steps in use). For example, if the contents of CV#4 = 2, then the deceleration is 0.064 seconds/step for a decoder currently using 28 speed steps. If the content of this parameter equals "0" then there is no programmed momentum during deceleration.

NMRA CV 5 - Vhigh (Top Volts)

Vhigh is used to specify the motor voltage level at maximum speed. This value is a fraction of available voltage. When the contents of CV#5 equal 255 the full available voltage will be applied. Values of 0 or 1 indicate that Vhigh is not used in the calculation of the speed table. VHigh require no other CV programming to be activated.

NMRA CV 6 - Vmid (Mid Volts)

Vmid specifies the voltage drive level at the middle speed step. Vmid is used to generate a performance curve in the decoder that translate speed step values into motor voltage drive levels and is specified as a fraction of available rectified supply voltage. Values of 00000000 or 00000001 shall indicate that Vmid is not used in the calculation of the speed table.
CV6 is used in conjunction with CV2 and CV5 as part of the 3 Point Speed Curves feature

NMRA CV 7 - Manufacturer Version Number

This CV reserved for the manufacturer to store information regarding the version of the decoder. This CV cannot be modified by an user. (READ ONLY)

NMRA CV 8 - Manufacturer ID

CV8 shall contain the NMRA assigned id number of the manufacturer of this decoder. The currently assigned manufacturer ID codes are listed in Appendix A of this Standard. The use of a value not assigned by the NMRA shall immediately cause the decoder to not be in conformance to this Standard. The CV shall be implemented as a read-only value, which cannot be modified. (READ ONLY)

NMRA CV 9 - Total PWM Period

THIS FEATURE IS NOT (YET) SUPPORTED BY THE WOWDIESEL V5

The value of CV#9 sets the nominal PWM period at the decoder output and therefore the frequency is proportional to the reciprocal of the value.
The recommend formula for PWM period should be:

PWM period (uS) = (131 + MANTISSA x 4)x 2 EXP

Where MANTISSA is in bits 0-4 bits of CV#9 (low order) and EXP is bits 5-7 for CV#9. If the value programmed into CV-9 falls outside a decoder's capability, it is suggested (but not required) that the decoder "adjust" the value to the appropriate highest or lowest setting supported by the decoder

NMRA CV 10 - BEMF Cutout

Contains a value between 1 and 126 that indicates the speed step above which the back EMF motor control cuts off. When 14 or 28 speed steps are used the LSB's of the value are truncated appropriately. A value of 0 means BEMF is always active.

NMRA CV 11 - Packet Time-Out Value

Contains the maximum time period that the decoder will maintain its speed without receiving a valid packet.. See S 9.2.4 Section C for further information.

NMRA CV 12 - Power Source Conversion²

Contains the identity of the alternate power source to which the decoder will be converted should CV #1 contain all zeros. This is also the primary alternative power source selected should the decoder perform power source conversion. The currently assigned Power Source Conversion codes are listed in Appendix B of this Standard.

NMRA CV 13 - Alternate Mode Function Status F1-F8

Indicates the status of each function (F1 through F8) when the unit is operating in alternate power mode, which cannot control the functions. If a function can be controlled, then the corresponding bit is ignored. A value of "0" indicates the function is off, while a value of "1" indicates the function is on. Bit 0 corresponds to F1, while Bit 7 corresponds to F8.

NMRA CV 14 - Alternate Mode Function Status F9-F12

Indicates the status of each function (F9 through F12, & FL) when the unit is operating in alternate power mode, which cannot control the functions. If a function can be controlled, then the corresponding bit is ignored. A value of "0" indicates the function is off, while a value of "1" indicates the function is on. FL in the forward direction is controlled by bit 0, FL in the reverse direction is controlled by bit 1. Bit 2 corresponds to F9, while Bit 5 corresponds to F12.

NMRA CV 15 - Decoder Lock (Key)

The Decoder Lock is used to change CVs in only one of several decoders with the same short address (CV1) or long address (CV17 and CV18) that are installed in the same locomotive. Assign a number to CV16 in each decoder (i.e. 1 to motor decoder, 2 to sound decoder, 3 or higher to other decoders) before the decoders are installed in the locomotive. To change a value in another CV of one of the installed decoders, first write the number 1 (motor), 2 (sound), or 3 or higher (other) into CV15, then send the new value to the CV to be changed. The decoders will compare CV15 to CV16 and, if the values are equal, the CV to be changed will be changed. If the values in CV15 and CV16 are different, the update will be ignored.

NMRA CV 16 - Decoder Lock (Door)

The Decoder Lock is used to change CVs in only one of several decoders with the same short address (CV1) or long address (CV17 and CV18) that are installed in the same locomotive. Assign a number to CV16 in each decoder (i.e. 1 to motor decoder, 2 to sound decoder, 3 or higher to other decoders) before the decoders are installed in the locomotive. To change a value in another CV of one of the installed decoders, first write the number 1 (motor), 2 (sound), or 3 or higher (other) into CV15, then send the new value to the CV to be changed. The decoders will compare CV15 to CV16 and, if the values are equal, the CV to be changed will be changed. If the values in CV15 and CV16 are different, the update will be ignored.

NMRA CV 17 - Extended Address (High Byte)

The Extended Address is the locomotives address when the decoder is set up for extended addressing (indicated by a value of "1" in bit location 5 of CV#29). CV#17 contains the most significant bits of the two byte address and must have a value between 11000000 and 11100111, inclusive, in order for this two byte address to be valid. CV 18 contains the least significant bits of the address and may contain any value.

NMRA CV 18 - Extended Address (Low Byte)

The Extended Address is the locomotives address when the decoder is set up for extended addressing (indicated by a value of "1" in bit location 5 of CV#29). CV#17 contains the most significant bits of the two byte address and must have a value between 11000000 and 11100111, inclusive, in order for this two byte address to be valid. CV 18 contains the least significant bits of the address and may contain any value.

NMRA CV 19 - Consist Address

This CV can be used to assign a second primary address to a locomotive for use in a consist, or "MU" arrangement. A value of 0 in this CV will disable the consist address. the consist address is made up of 7-bits, with Bit 7 indicating the relative direction of the unit within the consist. Values from 1 to 127 will operate the decoder on that address in the forward direction. An added value of 128 will reverse the operational direction.

Example

The desired consist address is 10. One unit will be operating in forward, one unit will be operating in reverse. For the forward facing unit, CV 19 should be programmed with a value of 10. For the reverse facing unit, CV 19 should be programmed with a value of 138 (128 + 10).

Related:

• Consist Lighting (Part 1)
• Consist Lighting (Part 2)
• Consist Acceleration Adjustment
• Consist Deceleration Adjustment
• Dual Prime Mover Delay

NMRA CV 21 - Consist Lighting for Function 1 through Function 8

This CV is used to configure what functions will respond to user input on the consist address. This particular CV affects F1-F8. For each Bit, a value of "1" indicates that the function will respond to instructions addressed to the consist address. A value of "0" indicates that the function will only respond to instructions addressed to the locomotive address. F1 is indicated by bit 0. F8 by bit 7.

To determine which functions are active, use the table below and combine the values of the functions you would like to have active, and program the sum into CV21. By default, all functions are active on the consist address.

Feature	Value
Function 1	1
Function 2	2
Function 3	4
Function 4	8
Function 5	16
Function 6	32
Function 7	64
Function 8	128

Related:

• Consist Address
• Consist Lighting (Part 2)
• Consist Acceleration Adjustment
• Consist Deceleration Adjustment
• Dual Prime Mover Delay

NMRA CV 22 - Consist Lighting for Function 0 and Function 9 through Function 12

This CV is used to configure what functions will respond to user input on the consist address. This particular CV affects F0 and F9-F12. For each Bit, a value of "1" indicates that the function will respond to instructions addressed to the consist address. A value of "0" indicates that the function will only respond to instructions addressed to the locomotive's base address. F0F is indicated by Bit 0, F0R by Bit 1, F9 by Bit 2, and F12 by Bit 7.

To determine which functions are active, use the table below and combine the values of the functions you would like to have active, and program the sum into CV21. By default, all functions are active on the consist address.

Feature	Value
Function 0 Forward	1
Function 0 Reverse	2
Function 9	4
Function 10	8
Function 11	16
Function 12	32

Related:

• Consist Address
• Consist Lighting (Part 1)
• Consist Acceleration Adjustment
• Consist Deceleration Adjustment
• Dual Prime Mover Delay

NMRA CV 23 - Consist Acceleration Adjustment

This CV contains additional acceleration rate information that is to be added to or subtracted from the base value contained in Configuration Variable #3. This CV will only affect the momentum when CV19 is a non-0 value, meaning the decoder is configured for advanced consisting. The total momentum value can be calculated using the following formula:

([the contents of CV#23] multiplied by [0.896]) divided by (number of speed steps in use)

This is a 7 bit value (bits 0-6) with bit 7 being reserved for a sign bit (0-add, 1-subtract). The product of this formula is added to the value in CV 3. In case of overflow (CV23 + CV3 > 255), the maximum acceleration rate shall be used (255). In case of underflow (CV3 + (-)CV23 < 0) no acceleration shall be used (0). The expected use of this configuration is for changing momentum to simulate differing train lengths/loads. Consisted/MU's tend to pull/push more cars, and therefore can have simulated higher loads by using this configuration.

Related:

• Consist Address
• Consist Lighting (Part 1)
• Consist Lighting (Part 2)
• Consist Deceleration Adjustment
• Dual Prime Mover Delay

NMRA CV 24 - Consist Deceleration Adjustment

This CV contains additional deceleration rate information that is to be added to or subtracted from the base value contained in Configuration Variable #4. This CV will only affect the momentum when CV19 is a non-0 value, meaning the decoder is configured for advanced consisting. The total momentum value can be calculated using the following formula:

([the contents of CV#24] multiplied by [0.896]) divided by (number of speed steps in use)

This is a 7 bit value (bits 0-6) with bit 7 being reserved for a sign bit (0-add, 1-subtract). The product of this formula is added to the value in CV 3. In case of overflow (CV24 + CV4 > 255), the maximum deceleration rate shall be used (255). In case of underflow (CV4 + (-)CV24 < 0) no deceleration shall be used (0). The expected use of this configuration is for changing momentum to simulate differing train lengths/loads. Consisted/MU's tend to pull/push more cars, and therefore can have simulated higher loads by using this configuration.

Related:

• Consist Address
• Consist Lighting (Part 1)
• Consist Lighting (Part 2)
• Consist Acceleration Adjustment
• Dual Prime Mover Delay

NMRA CV 25 - Speed Table (Mid Range Cab Speed Step)

A value between 2 and 127 shall be used to indicate 1 of 126 factory preset speed tables. A value of “00000010” indicates that the curve shall be linear. A value between 128 and 154 defines the 28-speed step position (1-26) which will define where the mid range decoder speed value will be applied. In 14-speed mode the decoder will utilize this value divided by two If the value in this variable is outside the range, the default mid cab speed of 14 (for 28 speed mode or 7 for 14 speed mode) shall be used as the mid speed value. Values of “00000000” or “00000001” shall indicate that this CV is not used in the calculation of the speed table.

NMRA CV 27 - Decoder Automatic Stopping Configuration

Used to configure which actions will cause the decoder to automatically stop. Bit 0 = Enable/Disable Auto Stop in the presence of an asymmetrical DCC signal which is more positive on the right rail. “0” = Disabled “1” = Enabled Bit 1 = Enable/Disable Auto Stop in the presence of an asymmetrical DCC signal which is more positive on the left rail. “0” = Disabled “1” = Enabled Bit 2 = Enable/Disable Auto Stop in the presence of an Signal Controlled Influence cutout signal. “0” = Disabled “1” = Enabled Bit 3 = Reserved for Future Use Bit 4 = Enable/Disable Auto Stop in the presence of reverse polarity DC “0” = Disabled “1” = Enabled Bit 5 = Enable/Disable Auto Stop in the presence forward polarity DC. “0” = Disabled “1” = Enabled Bits 6-7 = Reserved for future use.

• Note If the decoder does not support a feature contained in this table, it shall not allow the corresponding bit to be

set improperly (i.e. the bit should always contain it’s default value).

NMRA CV 28 - Bi-Directional Communication Configuration (RailCom)

Used to configure decoder’s Bi-Directional Communication characteristics when RailCom is enabled in CV 29.

• Note If the decoder does not support a feature contained in this table, it shall not allow the corresponding bit to be set improperly (i.e. the bit should always contain its default value).

Feature	Description	Default	Value
Channel 1	If enabled, Channel 1 will broadcast the address.	ON	1
Channel 2	If enabled, Channel 2 will send and receive data and provide acknowledgements.	ON	2
Programming Address 253	Serves as a programming lock. If this setting is disabled, programming address 253 will be locked.	ON	16

NMRA CV 29 - Configuration Data #1

This CV is used to set up or enable basic functions of your decoder such as direction, speed step modes, DC operation, and address type. See the table below for more information on the settings controlled by this CV.

To determine which functions are active, use the table below and combine the values of the functions you would like to have active, and program the sum into CV29.

Feature	Description	Default	Value
Direction	This setting controls the locomotive's forward and backward direction in digital mode only. Direction-sensitive functions, such as the motor and directional headlights will be reversed so that they line up with the locomotive’s new forward direction. This setting offers a software-level fix if the decoder has been wired backwards, instead of re-wiring the engine.	OFF	1
Speed Step Mode (28/128)	This setting selects the speed step mode used by the decoder. This setting is not affected by your command station's throttle setting. When enabled, 128 speed step mode is active - the decoder will interpolate 128 speed step mode from 28 speed steps if your command station is not configured for 128 speed step mode.	ON	2
Analogue (DC) Operation	If this setting is enabled, the decoder will operate when DC power is applied. The functionality of your decoder is based on your DC Mode Settings.	ON	4
Bi-Directional Communication (RailCom)	This setting determines whether the decoder will send or receive information over RailCom. See Bi-Directional Communication Configuration for more details	ON	8
User-Loadable Speed Tables	This setting switches motor control between the 3-point Speed Curve and the 128-point Speed Curve.	OFF	16
Address Type	This setting switches the Address Type between 2-digit and 4-digit addressing. When this setting is enabled, the decoder will use a 4-digit "long" address.	OFF	32

Related:

• Configuration Data (Part 2)
• User Options (Part 1)
• User Options (Part 2)

NMRA CV 30 - Error Information

In the case where the decoder has an error condition this Configuration Variable shall contain the error condition as specified by the manufacturer. A value of "0" indicates that no error has occurred.

Error Reporting Setup

Value	Effect	Description
0	Ignore Errors	Decoder will ignore all errors and not report any feedback
1	Report Errors	Decoder will report errors, depending on the error this will be in the form of an audible message or in the Tech Support CV's @TODO pick CV's to use for tracking error feedback
2	Developer Mode	This mode gives additional options to TCS developers and tech support staff while troubleshooting

NMRA CV 31 - Indexed CV High Byte

The Indexed Address is the address of the indexed CV page when the decoder is set up for indexed CV operation. CV#31 contains the most significant bits of the two byte address and may have any value between 16 and 255 inclusive. Values of 0 thru 15 are reserved by the NMRA for future use. CV32 contains the least significant bits of the index address and may contain any value.

This gives a total 61,440 indexed pages each with 256 CV's in each page for a total of 15,728,640 indexed CV's!
(High byte 240 * Low Byte 256 * bytes per page 256) = total number of available CV's

See Indexed CV's for more info on using this CV

NMRA CV 32 - Indexed CV Low Byte

The Indexed Address is the address of the indexed CV page when the decoder is set up for indexed CV operation. CV31 contains the most significant bits of the two byte address and may have any value between 16 and 255 inclusive. Values of 0 thru 15 are reserved by the NMRA for future use. CV32 contains the least significant bits of the index address and may contain any value.

This gives a total 61,440 indexed pages each with 256 CV's in each page for a total of 15,728,640 indexed CV's!
(High byte 240 * Low Byte 256 * bytes per page 256) = total number of available CV's

See Indexed CV's for more info on using this CV

NMRA CV 33 - F0F Remapping

This CV controls what functions are controlled by button F0F. See Function Remapping for more information on how to setup function button control.

NMRA CV 34 - F0R Remapping

This CV controls what functions are controlled by button F0R. See Function Remapping for more information on how to setup function button control.

NMRA CV 35 - F1 Remapping

This CV controls what functions are controlled by button F(1). See Function Remapping for more information on how to setup function button control.

NMRA CV 36 - F2 Remapping

This CV controls what functions are controlled by button F(2). See Function Remapping for more information on how to setup function button control.

NMRA CV 37 - F3 Remapping

This CV controls what functions are controlled by button F(3). See Function Remapping for more information on how to setup function button control.

NMRA CV 38 - F4 Remapping

This CV controls what functions are controlled by button F(4). See Function Remapping for more information on how to setup function button control.

NMRA CV 39 - F5 Remapping

This CV controls what functions are controlled by button F(5). See Function Remapping for more information on how to setup function button control.

NMRA CV 40 - F6 Remapping

This CV controls what functions are controlled by button F(6). See Function Remapping for more information on how to setup function button control.

NMRA CV 49 - F0F Lighting Effect

This CV controls which light effect is assigned to the F0F (Function 0 Forward) light output. On wired decoders F0F is assigned to the white wire (default), it's default light effect is on full bright when going forward.
See Changing Light Effects for more information on programming this CV.

NMRA CV 50 - F0R Lighting Effect

This CV controls which light effect is assigned to the F0R (Function 0 Reverse) light output. On wired decoders F0R is assigned to the yellow wire (default), it's default light effect is on full bright when going in reverse.
See the List of Available Lighting Features for more information on programming this CV.

NMRA CV 51 - F1 Lighting Effect

This CV controls which light effect is assigned to the F1 light output. On wired decoders F1 is assigned to the green wire (default), it's default light effect is on full bright.
See the List of Available Lighting Features for more information on programming this CV.

NMRA CV 52 - F2 Lighting Effect

This CV controls which light effect is assigned to the F2 light output. On wired decoders F2 is assigned to the purple wire (default), it's default light effect is on full bright.
See the List of Available Lighting Features for more information on programming this CV.

NMRA CV 53 - F3 Lighting Effect

This CV controls which light effect is assigned to the F3 light output. On wired decoders F3 is assigned to the brown wire (default), it's default light effect is on full bright.
See the List of Available Lighting Features for more information on programming this CV.

NMRA CV 54 - F4 Lighting Effect

This CV controls which light effect is assigned to the F4 light output. On wired decoders F4 is assigned to the pink wire (default), it's default light effect is on full bright.
See the List of Available Lighting Features for more information on programming this CV.

NMRA CV 55 - F5 Lighting Effect

This CV controls which light effect is assigned to the F5 light output. On wired decoders F5 is assigned to the Pink/Purple wire (default), it's default light effect is on full bright.
See the List of Available Lighting Features for more information on programming this CV.

NMRA CV 56 - F6 Lighting Effect

This CV controls which light effect is assigned to the F6 light output. On wired decoders F6 is assigned to the Green/Brown wire (default), it's default light effect is on full bright.
See the List of Available Lighting Features for more information on programming this CV.

NMRA CV 61 - Configuration Data #2

CV61 controls various settings in the WOWDecoder. In sound decoders this CV more limited than in mobile decoders.

To program this CV take the values in the values column corresponding to the features you want active and sum them together. Program this value into CV61. See the table below for available options

Feature	Value
BEMF motor control	1
Legacy Braking Mode	4
Rule 17 - dim headlight when stopped	16
Rule 17 - dim opposite headlight	32

Related:

• Configuration Data (Part 1)
• User Options (Part 1)
• User Options (Part 2)
• Legacy Braking Mode

NMRA CV 63 - Ditch Light Blink Holdover Time

This CV controls how long the ditch lights will blink after the Ditch Light Blink Button is pressed (usually set to the same button as the horn)
Multiply the time (in seconds) that you ditch lights to continue to blink by 2 and program that into this CV to get the desired ditch light blink holdover time

Related:

• List of Available Lighting Features
• Ditch Light Quick Presets
• Ditch Light Blink Button

NMRA CV 65 - Kick Start

THIS CV IS NOT CURRENTLY SUPPORTED BY WOWSound V5 DECODERS:
Specifies the amount of extra Kick that will supplied to the motor when transitioning between stop and the first speed step.

NMRA CV 66 - Forward Trim

Specifies a scale factor by which a voltage drive level should be multiplied, when the controller is driving the unit in the forward direction. It is interpreted as n/128. If the Forward Trim configuration variable contains a value of "0" then forward trim is not implemented.

NMRA CV 67 - Speed Table Step 1

The speed table is defined to be 28 bytes wide, consisting of 28 values for forward speeds. A digital controller that uses this table shall have at least 64 voltage drive levels and can have as many as 256 so that a smooth power curve can be constructed. Note that voltage drive levels are specified in integer values, in the same way as most other parameters. This means that a drive level of 1/4 maximum voltage corresponds to 0100000, not 0010000, as you would expect if the number specified a fraction with a fixed denominator, i.e. value 32 out of a fixed 128 levels (see Definitions section). See Speed Table for more information on how to setup the Speed Table.

NMRA CV 68 - Speed Table Step 2

The speed table is defined to be 28 bytes wide, consisting of 28 values for forward speeds. A digital controller that uses this table shall have at least 64 voltage drive levels and can have as many as 256 so that a smooth power curve can be constructed. Note that voltage drive levels are specified in integer values, in the same way as most other parameters. This means that a drive level of 1/4 maximum voltage corresponds to 0100000, not 0010000, as you would expect if the number specified a fraction with a fixed denominator, i.e. value 32 out of a fixed 128 levels (see Definitions section). See Speed Table for more information on how to setup the Speed Table.

NMRA CV 69 - Speed Table Step 3

The speed table is defined to be 28 bytes wide, consisting of 28 values for forward speeds. A digital controller that uses this table shall have at least 64 voltage drive levels and can have as many as 256 so that a smooth power curve can be constructed. Note that voltage drive levels are specified in integer values, in the same way as most other parameters. This means that a drive level of 1/4 maximum voltage corresponds to 0100000, not 0010000, as you would expect if the number specified a fraction with a fixed denominator, i.e. value 32 out of a fixed 128 levels (see Definitions section). See Speed Table for more information on how to setup the Speed Table.

NMRA CV 70 - Speed Table Step 4

The speed table is defined to be 28 bytes wide, consisting of 28 values for forward speeds. A digital controller that uses this table shall have at least 64 voltage drive levels and can have as many as 256 so that a smooth power curve can be constructed. Note that voltage drive levels are specified in integer values, in the same way as most other parameters. This means that a drive level of 1/4 maximum voltage corresponds to 0100000, not 0010000, as you would expect if the number specified a fraction with a fixed denominator, i.e. value 32 out of a fixed 128 levels (see Definitions section). See Speed Table for more information on how to setup the Speed Table.

NMRA CV 71 - Speed Table Step 5

The speed table is defined to be 28 bytes wide, consisting of 28 values for forward speeds. A digital controller that uses this table shall have at least 64 voltage drive levels and can have as many as 256 so that a smooth power curve can be constructed. Note that voltage drive levels are specified in integer values, in the same way as most other parameters. This means that a drive level of 1/4 maximum voltage corresponds to 0100000, not 0010000, as you would expect if the number specified a fraction with a fixed denominator, i.e. value 32 out of a fixed 128 levels (see Definitions section). See Speed Table for more information on how to setup the Speed Table.

NMRA CV 72 - Speed Table Step 6

The speed table is defined to be 28 bytes wide, consisting of 28 values for forward speeds. A digital controller that uses this table shall have at least 64 voltage drive levels and can have as many as 256 so that a smooth power curve can be constructed. Note that voltage drive levels are specified in integer values, in the same way as most other parameters. This means that a drive level of 1/4 maximum voltage corresponds to 0100000, not 0010000, as you would expect if the number specified a fraction with a fixed denominator, i.e. value 32 out of a fixed 128 levels (see Definitions section). See Speed Table for more information on how to setup the Speed Table.

NMRA CV 73 - Speed Table Step 7

The speed table is defined to be 28 bytes wide, consisting of 28 values for forward speeds. A digital controller that uses this table shall have at least 64 voltage drive levels and can have as many as 256 so that a smooth power curve can be constructed. Note that voltage drive levels are specified in integer values, in the same way as most other parameters. This means that a drive level of 1/4 maximum voltage corresponds to 0100000, not 0010000, as you would expect if the number specified a fraction with a fixed denominator, i.e. value 32 out of a fixed 128 levels (see Definitions section). See Speed Table for more information on how to setup the Speed Table.

NMRA CV 74 - Speed Table Step 8

The speed table is defined to be 28 bytes wide, consisting of 28 values for forward speeds. A digital controller that uses this table shall have at least 64 voltage drive levels and can have as many as 256 so that a smooth power curve can be constructed. Note that voltage drive levels are specified in integer values, in the same way as most other parameters. This means that a drive level of 1/4 maximum voltage corresponds to 0100000, not 0010000, as you would expect if the number specified a fraction with a fixed denominator, i.e. value 32 out of a fixed 128 levels (see Definitions section). See Speed Table for more information on how to setup the Speed Table.

NMRA CV 75 - Speed Table Step 9

The speed table is defined to be 28 bytes wide, consisting of 28 values for forward speeds. A digital controller that uses this table shall have at least 64 voltage drive levels and can have as many as 256 so that a smooth power curve can be constructed. Note that voltage drive levels are specified in integer values, in the same way as most other parameters. This means that a drive level of 1/4 maximum voltage corresponds to 0100000, not 0010000, as you would expect if the number specified a fraction with a fixed denominator, i.e. value 32 out of a fixed 128 levels (see Definitions section). See Speed Table for more information on how to setup the Speed Table.

NMRA CV 76 - Speed Table Step 10

The speed table is defined to be 28 bytes wide, consisting of 28 values for forward speeds. A digital controller that uses this table shall have at least 64 voltage drive levels and can have as many as 256 so that a smooth power curve can be constructed. Note that voltage drive levels are specified in integer values, in the same way as most other parameters. This means that a drive level of 1/4 maximum voltage corresponds to 0100000, not 0010000, as you would expect if the number specified a fraction with a fixed denominator, i.e. value 32 out of a fixed 128 levels (see Definitions section). See Speed Table for more information on how to setup the Speed Table.

NMRA CV 77 - Speed Table Step 11

The speed table is defined to be 28 bytes wide, consisting of 28 values for forward speeds. A digital controller that uses this table shall have at least 64 voltage drive levels and can have as many as 256 so that a smooth power curve can be constructed. Note that voltage drive levels are specified in integer values, in the same way as most other parameters. This means that a drive level of 1/4 maximum voltage corresponds to 0100000, not 0010000, as you would expect if the number specified a fraction with a fixed denominator, i.e. value 32 out of a fixed 128 levels (see Definitions section). See Speed Table for more information on how to setup the Speed Table.

NMRA CV 78 - Speed Table Step 12

The speed table is defined to be 28 bytes wide, consisting of 28 values for forward speeds. A digital controller that uses this table shall have at least 64 voltage drive levels and can have as many as 256 so that a smooth power curve can be constructed. Note that voltage drive levels are specified in integer values, in the same way as most other parameters. This means that a drive level of 1/4 maximum voltage corresponds to 0100000, not 0010000, as you would expect if the number specified a fraction with a fixed denominator, i.e. value 32 out of a fixed 128 levels (see Definitions section). See Speed Table for more information on how to setup the Speed Table.

NMRA CV 79 - Speed Table Step 13

The speed table is defined to be 28 bytes wide, consisting of 28 values for forward speeds. A digital controller that uses this table shall have at least 64 voltage drive levels and can have as many as 256 so that a smooth power curve can be constructed. Note that voltage drive levels are specified in integer values, in the same way as most other parameters. This means that a drive level of 1/4 maximum voltage corresponds to 0100000, not 0010000, as you would expect if the number specified a fraction with a fixed denominator, i.e. value 32 out of a fixed 128 levels (see Definitions section). See Speed Table for more information on how to setup the Speed Table.

NMRA CV 80 - Speed Table Step 14

The speed table is defined to be 28 bytes wide, consisting of 28 values for forward speeds. A digital controller that uses this table shall have at least 64 voltage drive levels and can have as many as 256 so that a smooth power curve can be constructed. Note that voltage drive levels are specified in integer values, in the same way as most other parameters. This means that a drive level of 1/4 maximum voltage corresponds to 0100000, not 0010000, as you would expect if the number specified a fraction with a fixed denominator, i.e. value 32 out of a fixed 128 levels (see Definitions section). See Speed Table for more information on how to setup the Speed Table.

NMRA CV 81 - Speed Table Step 15

The speed table is defined to be 28 bytes wide, consisting of 28 values for forward speeds. A digital controller that uses this table shall have at least 64 voltage drive levels and can have as many as 256 so that a smooth power curve can be constructed. Note that voltage drive levels are specified in integer values, in the same way as most other parameters. This means that a drive level of 1/4 maximum voltage corresponds to 0100000, not 0010000, as you would expect if the number specified a fraction with a fixed denominator, i.e. value 32 out of a fixed 128 levels (see Definitions section). See Speed Table for more information on how to setup the Speed Table.

NMRA CV 82 - Speed Table Step 16

The speed table is defined to be 28 bytes wide, consisting of 28 values for forward speeds. A digital controller that uses this table shall have at least 64 voltage drive levels and can have as many as 256 so that a smooth power curve can be constructed. Note that voltage drive levels are specified in integer values, in the same way as most other parameters. This means that a drive level of 1/4 maximum voltage corresponds to 0100000, not 0010000, as you would expect if the number specified a fraction with a fixed denominator, i.e. value 32 out of a fixed 128 levels (see Definitions section). See Speed Table for more information on how to setup the Speed Table.

NMRA CV 83 - Speed Table Step 17

The speed table is defined to be 28 bytes wide, consisting of 28 values for forward speeds. A digital controller that uses this table shall have at least 64 voltage drive levels and can have as many as 256 so that a smooth power curve can be constructed. Note that voltage drive levels are specified in integer values, in the same way as most other parameters. This means that a drive level of 1/4 maximum voltage corresponds to 0100000, not 0010000, as you would expect if the number specified a fraction with a fixed denominator, i.e. value 32 out of a fixed 128 levels (see Definitions section). See Speed Table for more information on how to setup the Speed Table.

NMRA CV 84 - Speed Table Step 18

The speed table is defined to be 28 bytes wide, consisting of 28 values for forward speeds. A digital controller that uses this table shall have at least 64 voltage drive levels and can have as many as 256 so that a smooth power curve can be constructed. Note that voltage drive levels are specified in integer values, in the same way as most other parameters. This means that a drive level of 1/4 maximum voltage corresponds to 0100000, not 0010000, as you would expect if the number specified a fraction with a fixed denominator, i.e. value 32 out of a fixed 128 levels (see Definitions section). See Speed Table for more information on how to setup the Speed Table.

NMRA CV 85 - Speed Table Step 19

The speed table is defined to be 28 bytes wide, consisting of 28 values for forward speeds. A digital controller that uses this table shall have at least 64 voltage drive levels and can have as many as 256 so that a smooth power curve can be constructed. Note that voltage drive levels are specified in integer values, in the same way as most other parameters. This means that a drive level of 1/4 maximum voltage corresponds to 0100000, not 0010000, as you would expect if the number specified a fraction with a fixed denominator, i.e. value 32 out of a fixed 128 levels (see Definitions section). See Speed Table for more information on how to setup the Speed Table.

NMRA CV 86 - Speed Table Step 20

The speed table is defined to be 28 bytes wide, consisting of 28 values for forward speeds. A digital controller that uses this table shall have at least 64 voltage drive levels and can have as many as 256 so that a smooth power curve can be constructed. Note that voltage drive levels are specified in integer values, in the same way as most other parameters. This means that a drive level of 1/4 maximum voltage corresponds to 0100000, not 0010000, as you would expect if the number specified a fraction with a fixed denominator, i.e. value 32 out of a fixed 128 levels (see Definitions section). See Speed Table for more information on how to setup the Speed Table.

NMRA CV 87 - Speed Table Step 21

The speed table is defined to be 28 bytes wide, consisting of 28 values for forward speeds. A digital controller that uses this table shall have at least 64 voltage drive levels and can have as many as 256 so that a smooth power curve can be constructed. Note that voltage drive levels are specified in integer values, in the same way as most other parameters. This means that a drive level of 1/4 maximum voltage corresponds to 0100000, not 0010000, as you would expect if the number specified a fraction with a fixed denominator, i.e. value 32 out of a fixed 128 levels (see Definitions section). See Speed Table for more information on how to setup the Speed Table.

NMRA CV 88 - Speed Table Step 22

The speed table is defined to be 28 bytes wide, consisting of 28 values for forward speeds. A digital controller that uses this table shall have at least 64 voltage drive levels and can have as many as 256 so that a smooth power curve can be constructed. Note that voltage drive levels are specified in integer values, in the same way as most other parameters. This means that a drive level of 1/4 maximum voltage corresponds to 0100000, not 0010000, as you would expect if the number specified a fraction with a fixed denominator, i.e. value 32 out of a fixed 128 levels (see Definitions section). See Speed Table for more information on how to setup the Speed Table.

NMRA CV 89 - Speed Table Step 23

The speed table is defined to be 28 bytes wide, consisting of 28 values for forward speeds. A digital controller that uses this table shall have at least 64 voltage drive levels and can have as many as 256 so that a smooth power curve can be constructed. Note that voltage drive levels are specified in integer values, in the same way as most other parameters. This means that a drive level of 1/4 maximum voltage corresponds to 0100000, not 0010000, as you would expect if the number specified a fraction with a fixed denominator, i.e. value 32 out of a fixed 128 levels (see Definitions section). See Speed Table for more information on how to setup the Speed Table.

NMRA CV 90 - Speed Table Step 24

The speed table is defined to be 28 bytes wide, consisting of 28 values for forward speeds. A digital controller that uses this table shall have at least 64 voltage drive levels and can have as many as 256 so that a smooth power curve can be constructed. Note that voltage drive levels are specified in integer values, in the same way as most other parameters. This means that a drive level of 1/4 maximum voltage corresponds to 0100000, not 0010000, as you would expect if the number specified a fraction with a fixed denominator, i.e. value 32 out of a fixed 128 levels (see Definitions section). See Speed Table for more information on how to setup the Speed Table.

NMRA CV 91 - Speed Table Step 25

The speed table is defined to be 28 bytes wide, consisting of 28 values for forward speeds. A digital controller that uses this table shall have at least 64 voltage drive levels and can have as many as 256 so that a smooth power curve can be constructed. Note that voltage drive levels are specified in integer values, in the same way as most other parameters. This means that a drive level of 1/4 maximum voltage corresponds to 0100000, not 0010000, as you would expect if the number specified a fraction with a fixed denominator, i.e. value 32 out of a fixed 128 levels (see Definitions section). See Speed Table for more information on how to setup the Speed Table.

NMRA CV 92 - Speed Table Step 26

The speed table is defined to be 28 bytes wide, consisting of 28 values for forward speeds. A digital controller that uses this table shall have at least 64 voltage drive levels and can have as many as 256 so that a smooth power curve can be constructed. Note that voltage drive levels are specified in integer values, in the same way as most other parameters. This means that a drive level of 1/4 maximum voltage corresponds to 0100000, not 0010000, as you would expect if the number specified a fraction with a fixed denominator, i.e. value 32 out of a fixed 128 levels (see Definitions section). See Speed Table for more information on how to setup the Speed Table.

NMRA CV 93 - Speed Table Step 27

The speed table is defined to be 28 bytes wide, consisting of 28 values for forward speeds. A digital controller that uses this table shall have at least 64 voltage drive levels and can have as many as 256 so that a smooth power curve can be constructed. Note that voltage drive levels are specified in integer values, in the same way as most other parameters. This means that a drive level of 1/4 maximum voltage corresponds to 0100000, not 0010000, as you would expect if the number specified a fraction with a fixed denominator, i.e. value 32 out of a fixed 128 levels (see Definitions section). See Speed Table for more information on how to setup the Speed Table.

NMRA CV 94 - Speed Table Step 28

The speed table is defined to be 28 bytes wide, consisting of 28 values for forward speeds. A digital controller that uses this table shall have at least 64 voltage drive levels and can have as many as 256 so that a smooth power curve can be constructed. Note that voltage drive levels are specified in integer values, in the same way as most other parameters. This means that a drive level of 1/4 maximum voltage corresponds to 0100000, not 0010000, as you would expect if the number specified a fraction with a fixed denominator, i.e. value 32 out of a fixed 128 levels (see Definitions section). See Speed Table for more information on how to setup the Speed Table.

NMRA CV 95 - Reverse Trim

Specifies a scale factor by which a voltage drive level should be multiplied, when the controller is driving the unit in reverse. It is interpreted as n/128. If the Reverse Trim configuration variable contains a value of "0" then reverse trim is not implemented.

NMRA CV 105 - User Identification #1

This CV is reserved for use by the owner of the decoder to store identification information, e.g. NMRA membership number. CV105 is ID #1 and CV106 is ID #2

NMRA CV 106 - User Identification #2

This CV is reserved for use by the owner of the decoder to store identification information, e.g. NMRA membership number. CV106 is ID #2 and CV105 is ID #1

NMRA CV 111 - Beta testing short circuit trip point motor offset

This CV is temporarily used for beta testing. Only mess with this CV if you find the decoder talking to you and saying there is a motor or light short circuit when there isn't actually one. TCS allowed the trip point to be programmable by beta testers because we are assuming not all locomotives act alike and will need customizing. Once we get feedback from the Beta testers we will modify the default values, thanks for helping us figure out the best values!

CV111 controls how much current is needed to trigger a short circuit when the locomotive is sitting still. Additional amperage is allowed for when the motor is running, that is controlled by Short Circuit Motor Trip Point Offset.
Each value adds .35 Amps to the trip point, the value can go up to 15. giving a total range of 0 Amps to 5.25 Amps.

Example: 1.05 amp trip point when sitting idle

Baseline amperage allowance 1.05A / .35A per value = value of 3 in CV111

Having a lower trip point while sitting idle allows a short in the lighting circuity to be caught faster, giving more protection to lighting outputs, however if its too low a loud sound or having many lights turned on may give a false trigger.

NMRA CV 112 - Beta testing short circuit trip point motor offset

This CV is temporarily used for beta testing. Only mess with this CV if you find the decoder talking to you and saying there is a motor or light short circuit when there isn't actually one. TCS allowed the trip point to be programmable by beta testers because we are assuming not all locomotives act alike and will need customizing. Once we get feedback from the Beta testers we will modify the default values, thanks for helping us figure out the best values!
CV112 controls how much current is added onto the base trip point in Short Circuit Trip Point Base CV when the motor is running. Each value adds .35 Amps to the trip point, the value can go up to 15. giving a total range of 0 Amps to 5.25 Amps.

Example: .7 amps when the motor is on in addition to the base trip point

Additional amperage allowance when motor is on .7A / .35A per value = value of 2 in CV112

Additionally the harder the motor is working the higher the trip point will get set by decoder code internally, but you don't need to worry about that as its not user programmable. If you find false motor shorts and certain speeds but not others please let TCS know what speeds it falsely trips at

NMRA CV 113 - Auto Mars Min. Speed

The Speed Step (0-126) at which the Auto Mars light will go from being on constant to using the Mars light effect

Related

• Changing Light Effects
• Auto Mars Max Speed

NMRA CV 114 - Auto Mars Max Speed

The Speed Step (0-126) above which the Auto Mars light will go from using the Mars light effect to being on constant bright.

Related

• Changing Light Effects
• Auto Mars Min Speed

NMRA CV 115 - Motor Delay Reset Time

This CV controls how long the motor will delay after a speed command is received before enacting it, this feature allows for more prototypical operation. By delaying the motor the sound file can change first, this is how prototype locomotives operate as the prime mover must first spool up and generate power before the locomotive can move.
This feature also allows more prototypical operation when automatic directional sounds are enabled so that the directional sound can play before the locomotive moves. This is for safeties sake so that any person in harms way will have a heads up that they need to get out of the way.

Example To set the delay time multiply the desired time (in seconds) by 2 and program that value into CV115. For example if you want to give 2 seconds from when the speed command is sent/directional sound starts playing enter a value of 4 into CV115

Related Sound Delay time

NMRA CV 116 - Sound Delay Time

This CV controls how long the sound will delay after a speed command is received before changing the prime mover notch. This feature allows the sound and motor to better sync.

If you change the throttle from speed step 0 to full speed 10 speed steps at a time this will take a few seconds. Without a delay the decoder will most likely go from idle to notch 1, then from notch 1 to notch 8. With a delay the decoder will go from idle to notch 8 as it waits to see what the final desired speed is then calculates what notch to go to.

Example To set the delay time multiply the desired time (in seconds) by 2 and program that value into CV116. For example if you want to give 2 seconds from when the speed command is sent/directional sound starts playing enter a value of 4 into CV116

Related Motor Delay time

NMRA CV 117 - DC Quill Voltage

This CV adjusts how much of a voltage increases is needed to sound a grade crossing quill when operating the WOWSound decoder in DC mode.
To sound the grade crossing quill the DC power throttle knob must momentarily increased at a rapid rate. How much it must be increased is controlled by this CV. The higher the value in this CV the higher the DC power pack throttle must be increased to sound a quill.

Related

• DC Mode Operation

NMRA CV 118 - DC Mode Motor Hysteresis

This CV is used to keep the prime mover from oscillating on and off while operating in DC mode.
Some DC power packs, particularly older ones, do not output a smooth DC voltage. Becuase of that sound decoder can become confused as to what the actual track voltage is. Since the decoder uses the track voltage in DC mode to determine how fast to go or what notch to be in this can goes things to change undesirably.
This CV helps to account for that. Once the WOWDiesel decoder decides the track voltage is high enough to run the motor and notch up the DC throttle must be turned to a lower votlage that the start voltage in order for the engine to actually stop. The great the value in this CV the lower the throttle must be turned to come to a stop. However to high a value may result in the WOWSound "browning out" (powering down) before notching to idle and stopping the motor.

If you find the locomotive stoping and starting or the automatic direction horns sounding without the throttle being adjusted, try increasing the value in this CV.

Related

• DC Mode Operation

NMRA CV 119 - DC Mode Motor Start Voltage

This CV controls what the track voltage must be on the rails while in DC mode before the decoder motor will turn on and start running. If this value is too low you may find that the decoder will try to move and then shut off, sometimes repeatedly. If you see this behavior increase the value in this CV.

The oscillation that you may see can be caused by old DC power packs which are not filtered/output smooth DC power. Additionally when the motor turns on the increased current draw will cause the voltage on the track to drop, which could cause the decoder to power down or oscillate.

Related

• DC Mode Operation

NMRA CV 120 - DC Bell Cutout Voltage

This CV depicts when the automatic bell will turn off (if enabled) when operating in DC mode.
The higher the value in this CV the greater the DC throttle must be before the automatic bell turns off. The DC mode automatic bell will come on when the locomotive starts moving, turn off when the setpoint voltage is reached, and turn back on when the voltage goes below that voltage again (not sure if it comes back on, need to confirm that)

Related

• DC Mode Operation

NMRA CV 121 - Crew Alert Timer

The Crew Alert Timer sets how much time an engineer/user has before the Crew Alert Alarm starts to sound. This higher the value the more time before the crew alert sounds

Related

• Crew Alert Feature
• Crew Alert Light Function

NMRA CV 122 - Crew Alert Light Function

If a light is installed to be used with the crew alert feature this CV tells the decoder which light to use.

Light Output	Value
F0F/White Wire	0
F0R/Yellow Wire	255
F1/Green Wire	1
F2/Purple Wire	2
F3/Brown Wire	3
F4/Pink Wire	4
F5/Pink/Purple Wire	5
F6/Green/Brown Wire	6

To dissociate the light from the crew alert timer set this CV to an invalid value IE 153.

Related

• Crew Alert Feature
• Crew Alert Timer

NMRA CV 123 - Rule 17 Dim Button Remapping

This CV controls what button dims the headlight when Rule 17 is enabled. For example if you want function button 4 to dim the headlight program this CV with a value of 4.
Set this CV to 29 if you don't want any button to dim the headlight
See Dual Enabled Functions to if you want to make the Dim button active in Sound Mode and not just in Light Mode

Related

• Lighting Effects
• Rule 17 Options

NMRA CV 124 - Ditch Light Blink Button Remapping

This CV controls which function button makes the ditch lights blink when a light output is setup as a ditch light.
To control which button makes the ditch lights blink simply enter the number of that button into this CV. For example to make the ditch lights blink when button 2 is pressed program CV124 with a value of 2. This CV supports all NMRA functions 0-28

See Also Ditch Light Preset

NMRA CV 125 - Deceleration Rate 2 Start Speed

This CV depicts at what speed step deceleration rate 2 starts to be used (instead of the deceleration rate in CV 3
This CV is part of the Variable Momentum Feature
A value of 0 means the feature is disabled

Related

• Variable Momentum Feature

NMRA CV 126 - Deceleration Rate 2

This CV depicts The deceleration rate 2 that is used when the feature is active and when the speed is above the value in Decel Rate 2 Start Speed CV
This CV is part of the Variable Momentum Feature
A value of 0 means the feature is disabled

Related

• Variable Momentum Feature

NMRA CV 127 - Deceleration Rate 3 Start Speed

This CV depicts at what speed step deceleration rate 3 starts to be used
This CV is part of the Variable Momentum Feature
A value of 0 means the feature is disabled

Related

• Variable Momentum Feature

NMRA CV 128 - Deceleration Rate 3

This CV depicts deceleration rate 3 which is used when the feature is active and when the speed is above the value in Decel Rate 3 Start Speed CV
This CV is part of the Variable Momentum Feature
A value of 0 means the feature is disabled

Related

• Variable Momentum Feature

NMRA CV 129 - Acceleration Rate 2 Start Speed

This CV depicts at what speed step Acceleration rate 2 starts to be used
This CV is part of the Variable Momentum Feature
A value of 0 means the feature is disabled

Related

• Variable Momentum Feature

NMRA CV 130 - Acceleration Rate 2

This CV depicts Acceleration rate 2 which is used when the feature is active and when the speed is above the value in Accel Rate 2 Start Speed CV
This CV is part of the Variable Momentum Feature
A value of 0 means the feature is disabled

Related

• Variable Momentum Feature

NMRA CV 131 - Acceleration Rate 3 Start Speed

This CV depicts at what speed step Acceleration rate 3 starts to be used
This CV is part of the Variable Momentum Feature
A value of 0 means the feature is disabled

Related

• Variable Momentum Feature

NMRA CV 132 - Acceleration Rate 3

This CV depicts Acceleration rate 3 which is used when the feature is active and when the speed is above the value in Accel Rate 3 Start Speed CV
This CV is part of the Variable Momentum Feature
A value of 0 means the feature is disabled

Related

• Variable Momentum Feature

NMRA CV 133 - Switching Momentum Acceleration Rate

This CV contains the value that is loaded into CV3 acceleration when switching momentum is active. The higher the value the longer it takes to accelerate

NMRA CV 134 - Switching Momentum Deceleration Rate

This CV contains the value that is loaded into CV4 deceleration when Switching Momentum is active. The higher the value the longer it takes to decelerate

NMRA CV 135 - Mainline Momentum Acceleration Rate

This CV contains the value that is loaded into CV3 acceleration when Mainline Momentum is active. The higher the value the longer it takes to accelerate

NMRA CV 136 - Mainline Momentum Deceleration Rate

This CV contains the value that is loaded into CV4 deceleration when Mainline Momentum is active. The higher the value the longer it takes to decelerate

NMRA CV 137 - DC Mode Max ADC Value

This CV syncs the decoder with the DC power pack when running in DC mode. For example if you are running the engine at full throttle in DC mode but it is not moving very fast or in notch 8 decrease the value in this CV. Since not all DC power packs output the same maximum voltage this CV was created to account for that. For DC power packs that output higher voltages this CV will need to be set higher.

NMRA CV 138 - Audio Auto Shutoff Timer

This CV controls how long the engine must sit unused before it will automatically mute itself. The higher the value in this CV the more time it will take before it mutes itself from inactivity.


Related

• User Options

NMRA CV 139 - Random Sound Overall Timer

This CV adjusts the play rate for all Random sounds. The higher the timer the less often random sounds will play

Related

• Random Sounds Overview
• Random Sound 1 Frequency
• Random Sound 2 Frequency
• Random Sound 3 Frequency
• Random Sound 4 Frequency
• Random Sound Cutout Speed
• Enabling Automatic Sounds

NMRA CV 140 - Active Quill CV

This CV controls which grade crossing quills can be played when the grade crossing button is pressed. There are 3 different types of quills loaded onto the decoder each with a different length, short, medium, and long quills. The can be played in order or have a random quill selected each time. Trains running in areas with large open areas can have long grade quills while trains in a city with many grade crossings close to each other usually play shorter quills. By default all quills are active and will play in random order. To play them sequentially enable the "Play Quills in order" setting.
To program this CV take the values in the values column corresponding to the features you want active and sum them together and program this value into the CV. See the table below for available options.

Feature	Value
Short Quills	1
Medium Quills	2
Long Quills	4
Play Quills in Order	128

NMRA CV 141 - Random Sound 1 Frequency

This CV adjusts the play rate for Random Sound 1. The higher the value the more often random sounds will play.
Be default random sound 1 plays the air compressor. The air compressor will also play based on how much air is used. IE if you use the train brake or horn a lot the air compressor will kick on to replenish the used air pressure.

Related

• Random Sounds Overview
• Random Sound Overall Timer
• Random Sound 2 Frequency
• Random Sound 3 Frequency
• Random Sound 4 Frequency
• Random Sound Cutout Speed
• Enabling Random Sounds

NMRA CV 142 - Random Sound 2 Frequency

This CV adjusts the play rate for Random Sound 2. The higher the value the more often random sounds will play.
By default random sound two plays an Air Spitter.

Related

• Random Sounds Overview
• Random Sound Overall Timer
• Random Sound 1 Frequency
• Random Sound 3 Frequency
• Random Sound 4 Frequency
• Random Sound Cutout Speed
• Enabling Random Sounds

NMRA CV 143 - Random Sound 3 Frequency

This CV adjusts the play rate for Random Sound 3. The higher the value the more often random sounds will play.
By default random sound 3 is not assigned a sound.

Related

• Random Sounds Overview
• Random Sound Overall Timer
• Random Sound 1 Frequency
• Random Sound 2 Frequency
• Random Sound 4 Frequency
• Random Sound Cutout Speed
• Enabling Random Sounds

NMRA CV 144 - Random Sound 4 Frequency

This CV adjusts the play rate for Random Sound 4. The higher the value the more often random sounds will play.
By default random sound 4 is not assigned a sound.

Related

• Random Sounds Overview
• Random Sound Overall Timer
• Random Sound 1 Frequency
• Random Sound 2 Frequency
• Random Sound 3 Frequency
• Random Sound Cutout Speed
• Enabling Random Sounds

NMRA CV 145 - Random Sound Cutout Speed

Sometimes you may only want the random sounds to play while the engine is sitting still. A trackside bystander will be hard pressed to hear an air spitter or air compressor kick on while a locomotive is flying by at full speed. This CV can control at what speed (0-126) the random sounds will not play above to simulate this.

Related

• Random Sounds Overview
• Random Sound Overall Timer
• Random Sound 1 Frequency
• Random Sound 2 Frequency
• Random Sound 3 Frequency
• Random Sound 4 Frequency
• Enabling Random Sounds

NMRA CV 146 - Horn Selection

This CV selects which horn is active. See the List of Sounds to see what horns are available.
The Rotate Horn feature can also be used to change the active horn without the need for CV programming
@TODO populate the list of available horns here? Have it be an embedded page thats auto created from the list of sounds?

NMRA CV 147 - Throttle Mode Selection

There are 3 different throttle modes in the WOWSound decoder to choose from, TCS offers Traditional Throttle Mode (slot car mode), Prototype Mode, and Manual Notching. Each mode offers different levels of control and prototype authenticity. The WOWDiesel decoder defaults to Prototype Throttle mode which gives the most prototypical performance by taking advantage of TCS's revolutionary Proto-Notch™ technology.

The easy way to select a throttle mode is to use menu 4.1 of Audio Assist™.
Additionally this CV can be manually programmed by entering the value of the desired throttle mode into CV147

Throttle Mode	Value
Traditional Throttle mode	0
Prototype Throttle Mode	1
Manual Notching Mode	2

Traditional Throttle Mode

Traditional throttle mode is how sound decoders traditionally operate, where the prime move notch is related directly to the speed, every x speed steps (of 128 speed steps) is a different notch, so the faster you go the higher the notch you will be in.
The speed setpoints that the prime mover changes notches are controlled by CV165 - CV172 where CV165 controls when the locomotive goes into Notch 1 and CV172 controls what speed step the locomotive goes into Notch 8 By default TCS WOWSound decoder operate in Prototype Mode.
Traditional throttle mode is also available though and can be selected using Audio_Assist™ menu 4.1 or by programming CV147 Throttle Type

Prototype Mode

TCS brought Auto notching to the model train hobby with the Advent of the WOWDiesel decoder, it is arguably the coolest feature of the WOWSound decoder.
Auto notching allows the decoder to decide what notch to be in, no longer do you have a notch based on just the speed like in Traditional Throttle Mode. With Auto Notching the prime mover sound is constantly changing as it goes up hills, around curves, picks up more cars, and coasts down hills! You can even calibrate the locomotive in Audio Assist™ so it knows what the ruling grade is on your layout and will be in notch 8 as it traverses it! To calibrate your WOWDiesel locomotive so that it knows the ruling grade and downhill grades on your layout enter Audio Assist™ and go to the calibration menu (menu 3.2) and follow the audio prompt from the decoder. It will ask you to run the locomotive in a coasting condition and then a notch 8 condition. (PRO TIP: While on the calibration menu you can calibrate the coasting point by pressing function 1 or the notch 8 point by pressing button 2, even if the menu is telling you to do otherwise)
Behind the scenes Audio Assist™ is saving the calibration data to CV152 BEMF Calibration Low and CV154 BEMF Calibration High both CV's can be programmed tweaked manually. TCS recommends calibrating using Audio Assist and then manually tweaking the CV's if need be.

Manual Notching

Manual Notching is for users who like to run prototypically without letting the decoder have all the fun of Auto Notching.
In Manual Notch mode you can manually select the notch by pressing the notch up or notch down buttons (by default they are functions 10 and 11 respectively). Meanwhile you can still control the speed as your normally would. This gives full control of both the speed and notch to you simultaneously!

The manual notch buttons are always active regardless of which Throttle Mode is selected. However when not in manual notching mode manual changes are overridden when a speed change is made. For example if you are in Traditional throttle mode and running down a hill you may want to manually notch down, when you reach the bottom of the hill changing the speed will revert the notch back to what it was at the top of the hill. While in manual notch mode speed changes do not override the manual notch setting.

See the video below for more information and a demonstration.

NMRA CV 148 - Master Volume

This CV controls the volume of the decoder and effects every sound. This CV can be programmed manually or through Audio Assist™ menu 1.1.1

NMRA CV 149 - Prime Mover Selection

This CV depicts which prime mover is active in the decoder. Select a value from the table below and program it into CV149 to select that prime mover. A notch change will be needed in order for the change to take effect.
Note the prime mover can be selected using Audio Assist™ (menu 1.3) without the need for CV programming.

@TODO add a table here that is auto generated based on the List of Sounds

NMRA CV 150 - Not Supported

Not Supported

NMRA CV 151 - Not Supported

Not Supported

NMRA CV 152 - BEMF Calibration Low Byte

This CV is a part of the Auto Notching Feature.
A Calibration can be done so that the WOWSound decoder knows when your locomotive is coasting and when its hauling a heavy load and play the appropriate sounds to match what the engine is doing. This CV is used to track when the locomotive is coasting.
Calibrating is done through Audio Assist™ (menu 3.2)
TCS suggests not adjusting this CV and using the calibration instead. If you find that the calibration does not work well for your locomotive this CV can be manually programmed. The lower the value in this CV the lighter the train load must be before the prime mover coasts (notches down to idle) while running in Prototype Throttle Mode @TODO create the Prototype throttle mode, detail how its more than just auto notching, it also sets the momentum levels when going between traditional and prototype mode, also change the link on the main page to this new link instead of the auto notching page

See the Auto Notching feature for more information on calibrating and auto notching.

NMRA CV 154 - BEMF Calibration High Byte

This CV is a part of the Auto Notching Feature.
A Calibration can be done so that the WOWSound decoder knows when your locomotive is coasting and when its hauling a heavy load and play the appropriate sounds to match what the engine is doing. This CV is used to track when the locomotive is working its hardest.
Calibrating is done through Audio Assist™ (menu 3.2)
TCS suggests not adjusting this CV and using the calibration instead. If you find that the calibration does not work well for your locomotive this CV can be manually programmed. The higher the value in this CV the heavier the train load must be before the prime mover goes to notch 8 while running in Prototype Throttle Mode @TODO create the Prototype throttle mode, detail how its more than just auto notching, it also sets the momentum levels when going between traditional and prototype mode, also change the link on the main page to this new link instead of the auto notching page

See the Auto Notching feature for more information on calibrating and auto notching.

NMRA CV 156 - Dual Prime Mover Delay

Some locomotives such as E-Units had two prime movers in one locomotive. Most times when the engineer would change notches there was a delay between the one prime mover changing notches and the second one following suit, this CV can simulate that. This feature can also be used for consisting. If the lead locomotive has a sound decoder but the unit behind it doesn't enable Dual Prime Movers so that the sound equipped unit plays sounds for both of the engines.
The higher the CV value the greater the delay time will be.

NMRA CV 157 - Bell Selection

This CV selects which Bell is active. See the List of Sounds to see what bells are available.
The Rotate feature feature can also be used to change the active bell without the need for CV programming
@TODO populate the list of available bells here? Have it be an embedded page thats auto created from the list of sounds?

NMRA CV 158 - Automatic Bell Cutout Speed

Starting in V5 of the WOWDiesel TCS now supports Automatic bells in DC and DCC mode. This feature can be enabled in the Automatic Sounds CV, the speed at which the automatic bell stops playing is set by this CV. When the Locomotive starts the automatic bell will sound and continue to play until the locomotive stops again or until the cutout speed is reached.

NMRA CV 159 - Proto-Notch™ Speed Factor

The Proto-Notch™ feature takes into account the speed that the locomotive is going as it determines what notch the prime mover should be in. To increase the effect the speed has on the notch while running in prototype mode increase the value of this CV.

NMRA CV 160 - Proto-Notch™ Velocity Factor

The Proto-Notch™ feature takes into account the acceleration and deceleration of the locomotive as it determines what notch the prime mover should be in. To increase the effect the speed changes have on the notch while running in prototype mode increase the value of this CV.

NMRA CV 161 - Proto-Notch™ Load Factor

The Proto-Notch™ feature takes into account the Load that the locomotive is under as it determines what notch the prime mover should be in. To increase the effect the Load has on the notch while running in prototype mode increase the value of this CV. The higher the value the more likely the prime mover will notch up in response to loads.

NMRA CV 162 - Proto-Notch™ Hysteresis

If you find the notches constantly changing without any changes in speed or load while using the Proto-Notch™ feature then a bit more hysteresis may be needed. Increase the value of this CV to keep the Prime Mover from oscillating.
In other words increasing this CV requires large changes in the speed, load, and velocity before the notch will change.

NMRA CV 163 - Not Supported

Not Supported

NMRA CV 164 - Not Supported

Not Supported

NMRA CV 165 - Traditional Throttle Mode Notch 1 Speed Step

The Speed Step at which the prime mover will notch up when operating in Traditional Throttle mode.

See Also Traditional Throttle mode

NMRA CV 166 - Traditional Throttle Mode Notch 2 Speed Step

The Speed Step at which the prime mover will notch up when operating in Traditional Throttle mode.

See Also Traditional Throttle mode

NMRA CV 167 - Traditional Throttle Mode Notch 3 Speed Step

The Speed Step at which the prime mover will notch up when operating in Traditional Throttle mode.

See Also Traditional Throttle mode

NMRA CV 168 - Traditional Throttle Mode Notch 4 Speed Step

The Speed Step at which the prime mover will notch up when operating in Traditional Throttle mode.

See Also Traditional Throttle mode

NMRA CV 169 - Traditional Throttle Mode Notch 5 Speed Step

The Speed Step at which the prime mover will notch up when operating in Traditional Throttle mode.

See Also Traditional Throttle mode

NMRA CV 170 - Traditional Throttle Mode Notch 6 Speed Step

The Speed Step at which the prime mover will notch up when operating in Traditional Throttle mode.

See Also Traditional Throttle mode

NMRA CV 171 - Traditional Throttle Mode Notch 7 Speed Step

The Speed Step at which the prime mover will notch up when operating in Traditional Throttle mode.

See Also Traditional Throttle mode

NMRA CV 172 - Traditional Throttle Mode Notch 8 Speed Step

The Speed Step at which the prime mover will notch up when operating in Traditional Throttle mode.

See Also Traditional Throttle mode

NMRA CV 173 - Auxiliary Input Duration of Output

For decoders with an auxiliary input (WOW501 sounds can be triggered by the input. An example of this would be to install a magnetic reed switch on the bottom of a locomotive and place a magnet in between the rails before a grade crossing, then every time the locomotive approaches the crossing it will play a grade crossing quill automatically.

If the sound to be triggered is a looping sound this CV controls how long the sound will play for. The higher the value in this CV the longer the sound will play.

NMRA CV 174 - Smoke Unit On Time

WOWSound decoders now support smoke unit support as a function output
To increase how long the smoke unit fan is on during its on cycle increase the value in this CV.

NMRA CV 175 - Smoke Unit Off Time

WOWSound decoders now support smoke unit support as a function output
To increase how long the smoke unit fan is off during its off cycle increase the value in this CV.

NMRA CV 176 - Sound Options #1

CV176 controls various settings in the WOWDecoder. To program this CV, first decide which features you want to have active. Take the values in the Value column corresponding to the feature(s) you want active and add them together. Program the total value into CV176. See the table below for available options

Related

There are additional user options which may be configured via CV 177 - Sound Options #2

Feature	Description	Default	Value
Manual Notching Feedback (Relay Sound)	Enable this setting to have the decoder play relay sound when manually changing notches.	ON	1
Mute On Startup	When this setting is enabled, the decoder will mute on power up until it is issued a command.	OFF	4
Momentum Mode Audio Feedback	This feature announces the active Momentum Mode when it is changed.	ON	8
Rotate Feature Audio Feedback	Enable this setting to allow the decoder to announce the new horn or play a bell snippet when rotating through sounds when using the Rotate Feature	ON	16
Light/Sound Mode Audio Feedback	Enable this setting to have the decoder announce what the active control mode is for your throttle after pushing the mute button twice.	ON	32
Audio Auto Shutoff	The Audio Auto Shutoff feature mutes the decoder after a set time of inactivity. You may adjust the time with the Audio Shutoff Timer. The Automatic Audio Shutoff will not mute the sound if the decoder is in motion.	ON	64
Digitrax Throttle Setting	If you use a Digitrax throttle which has function 2 set as a "momentary function" (E.G. DT400+) this setting makes Audio Assist work better.	ON	128

NMRA CV 177 - Sound Options #2

CV177 controls various settings in the WOWDecoder. To program this CV, first decide which features you want to have active. Take the values in the Value column corresponding to the feature(s) you want active and add them together. Program the total value into CV177. See the table below for available options

Related

There are additional user options which may be configured via CV 176 - Sound Options #2

Feature	Description	Default	Value
Dual Prime Movers	Enable this setting to have two prime mover sound files play simultaneously. This feature may be used for locomotives such as E8's with two prime movers.	OFF	1
Dynamic Braking Notch Up	If this setting is enabled, the prime mover will notch up multiple times with subsequent presses of the dynamic brake button (F5 by default); If disabled the prime mover will go to the set Dynamic Brake Notch and stay there when the dynamic brakes are applied.	ON	2
Reverse Directional Horns	If this setting is enabled, the Automatic Directional Horns (if enabled) will reverse so that the forward horn will play when going reverse (and so on). This feature is sometimes useful when a decoder installation has the motor wired in the reverse polarity. Instead of re-wiring the locomotive, this feature allows for a software fix. Often used in conjunction with CV 29.	OFF	4
Automatic Notching Mechanism Selection	If enabled, user option bit 4 decides if the prime mover notches will stair step or jump directly between notches. If disabled, the decoder will automatically decide when to use stair stepping or jump notching. The decoder will base this decision on the active Momentum Mode.	OFF	8
Notching Mechanism Selection	This setting controls whether the Notching Mechanism is set to jump-notching or stair-step notching. Automatic Notching Mechanism Selection must be enabled in order to use this setting. If this setting is enabled, the prime mover will stair-step through each notch; If this setting is disabled, the prime mover will jump-notch.	ON	16

NMRA CV 178 - Automatic Sounds Part 1

CV178 controls various Automatic sound in the WOWDecoder. To program this CV take the values in the values column corresponding to the features you want active and sum them together. Program this value into the CV. See the table below for available options

Feature	Description	Default	Value
Crew Alert	Crew Alert is a safety feature of modern Diesel Locomotives	OFF	1
Automatic Bell	If enabled a bell will sound while moving at low speeds, a safety feature. Bell will turn off above the Speed Step defined in the Auto Bell CUtout Speed CV	OFF	8
Forward Horn	If enabled the locomotive will sound two long blasts when starting to move forward	OFF	16
Reverse Horn	If enabled the locomotive will sound three short blasts when starting to move in reverse	OFF	32
Stop Horn	If enabled the locomotive will sound one long blast when coming to a stop	OFF	64

NMRA CV 179 - Automatic Sounds Part 2

CV179 controls which random sounds are active. To program this CV take the values corresponding to the Random Sounds you want active and sum them together then program this value into CV179. See the table below for available options.

By default all random sounds are enabled.

Feature	Value
Random Sound 1	1
Random Sound 2	2
Random Sound 3	4
Random Sound 4	8

Related:

• Random Sounds Overview
• Random Sound Overall Timer
• Random Sound 1 Frequency
• Random Sound 2 Frequency
• Random Sound 3 Frequency
• Random Sound 4 Frequency
• Random Sound Cutout Speed

NMRA CV 180 - Not Supported

Not Supported

NMRA CV 181 - DC Mode Sounds

CV181 controls automatic sounds while operating the WOWDecoder on a DC Analog track. To program this CV take the values in the values column corresponding to the features you want active and sum them together. Program this value into the CV. See the table below for available options

Feature	Description	Default	Value
Automatic Bell	If enabled a bell will sound while moving at low speeds, a safety feature.	ON	1
Forward Horn	If enabled the locomotive will sound two long blasts when starting to move forward	ON	2
Reverse Horn	If enabled the locomotive will sound three short blasts when starting to move in reverse	ON	4
Stop Horn	If enabled the locomotive will sound one long blast when coming to a stop	ON	8
DC Mode Quill	If enabled the locomotive sound a quill when the power pack throttle is flicked up and back down quickly	ON	16

NMRA CV 182 - Not Supported

Not Supported

NMRA CV 183 - Train Brake Rate 1

This CV Controls the deceleration rate when the brake button is pressed 1 time.

NMRA CV 184 - Train Brake Rate 2

This CV Controls the deceleration rate when the brake button is pressed 2 times.

NMRA CV 185 - Train Brake Rate 3

This CV Controls the deceleration rate when the brake button is pressed 3 times.

NMRA CV 186 - Train Brake Rate 4

This CV Controls the deceleration rate when the brake button is pressed 4 times.

NMRA CV 187 - Train Brake Rate 5

This CV Controls the deceleration rate when the brake button is pressed 5 times.
This is the most the brakes can be applied, the train will not brake any faster than the deceleration rate in this CV.
For immediate stops use the E-Stop function of your specific throttle.

NMRA CV 188 - Brake Grinding Activation Speed Step

When the train brakes are on a brake squeal sound will play. As the train gets closer to stopping the brake sounds will go from a screech to a grinding sound as is prototypical of the prototype. This CV controls at which speed step (0-126) the brake grind sounds start to play instead of the brake squeal sounds.

See Also Train Brake

NMRA CV 189 - Dynamic Brake Min. Speed

Since Dynamic Brakes lose braking power at low speed this CV can be used to simulate that. The locomotive won't go below the speed (0-126) in this CV when the dynamic brakes are applied.

See Also

• Dynamic Brakes
• Dynamic Brake Deceleration Rate
• Dynamic Brake Speed Decrement

NMRA CV 190 - Dynamic Brake Deceleration Rate

The train will decelerate at this rate when the Dynamic brakes are applied. The rate of deceleration is determined the same as as is done in CV3 (the higher the number the slower it decelerates)

See Also

• Dynamic Brakes
• Dynamic Brake Min. Speed
• Dynamic Brake Speed Decrement

NMRA CV 191 - Dynamic Brake Speed Decrement Amount

This CV controls how many speeds steps the train will slow down per press of the dynamic brake button. The lowest speed is limited by the Dynamic Brake Min Speed

See Also

• Dynamic Brake Min Speed
• Dynamic Brake Deceleration Rate
• Dynamic Brake Notch Setting

NMRA CV 192 - Dynamic Brake Notch Setting

This CV controls what notch the prime mover will go to when the dynamic brakes are activated. In the prototype the Prime mover must notch up to generate a magnetic field in order for the dynamic brakes to operate. Most locomotives go to Notch 3 when dynamic braking.

See Also

• Dynamic Brake Min Speed
• Dynamic Brake Deceleration Rate
• Dynamic Brake Speed Decrement

NMRA CV 193 - Not Supported

Not Supported

NMRA CV 194 - Not Supported

Not Supported

NMRA CV 195 - Air Compressor Volume

This CV adjusts the volume of this sound type, all sounds of this type are effected by this CV.

NMRA CV 196 - Air Spitter Volume

This CV adjusts the volume of this sound type, all sounds of this type are effected by this CV.

NMRA CV 197 - Bell Volume

This CV adjusts the volume of this sound type, all sounds of this type are effected by this CV.

NMRA CV 198 - Brake Release

This CV adjusts the volume of this sound type, all sounds of this type are effected by this CV.

NMRA CV 199 - Brake Squeal Volume

This CV adjusts the volume of this sound type, all sounds of this type are effected by this CV.

NMRA CV 200 - Coupler Clank Volume

This CV adjusts the volume of this sound type, all sounds of this type are effected by this CV.

NMRA CV 201 - Crew Alert Volume

This CV adjusts the volume of this sound type, all sounds of this type are effected by this CV.

NMRA CV 202 - Direction Change Sound Volume

This CV adjusts the volume of this sound type, all sounds of this type are effected by this CV.

NMRA CV 203 - Dynamic Brake Volume

This CV adjusts the volume of this sound type, all sounds of this type are effected by this CV.

NMRA CV 204 - Exhaust Fan Volume

This CV adjusts the volume of this sound type, all sounds of this type are effected by this CV.

NMRA CV 205 - Forward Horn Volume

This CV adjusts the volume of this sound type, all sounds of this type are effected by this CV.

NMRA CV 206 - Horn Long Blast Volume

This CV adjusts the volume of this sound type, all sounds of this type are effected by this CV.

NMRA CV 207 - Horn Quill Volume

This CV adjusts the volume of this sound type, all sounds of this type are effected by this CV.

NMRA CV 208 - Horn Short Blast Volume

This CV adjusts the volume of this sound type, all sounds of this type are effected by this CV.

NMRA CV 209 - Manual Notch Down (Relay Sound) Volume

This CV adjusts the volume of this sound type, all sounds of this type are effected by this CV.

NMRA CV 210 - Manual Notch Up (Relay Sound) Volume

This CV adjusts the volume of this sound type, all sounds of this type are effected by this CV.

NMRA CV 211 - Momentum Announcement Volume

This CV adjusts the volume of this sound type, all sounds of this type are effected by this CV.

NMRA CV 212 - Mute Announcement Volume

This CV effectively does nothing, once the decoder is muted you can't hear it announce that its muted, however its needed as part of the internal functionality.

NMRA CV 213 - Prime Mover Volume

This CV adjusts the volume of this sound type, all sounds of this type are effected by this CV.

NMRA CV 214 - Prime Mover Ignition Volume

The Prime Mover ignition is the sound that plays when the prime mover turns on or off. It is recommended to keep this the same volume as the other prime mover files in CV213

NMRA CV 215 - Reverse Horn Volume

This CV adjusts the volume of this sound type, all sounds of this type are effected by this CV.

NMRA CV 216 - Rotate Feature Volume

This CV adjusts the volume of this sound type, all sounds of this type are effected by this CV.

NMRA CV 217 - Sanding Valve Volume

This CV adjusts the volume of this sound type, all sounds of this type are effected by this CV.

NMRA CV 218 - Horn Stop Sound Volume

This CV adjusts the volume of this sound type, all sounds of this type are effected by this CV.

NMRA CV 219 - Windshield Wiper Volume

This CV adjusts the volume of this sound type, all sounds of this type are effected by this CV.

NMRA CV 220 - Audio Assist Volume

This CV adjusts the volume of this sound type, all sounds of this type are effected by this CV.
This includes the "Light Mode" and "Sound Mode" announcements

NMRA CV 221 - Not Supported

Not Supported

NMRA CV 222 - Not Supported

Not Supported

NMRA CV 223 - Not Supported

Not Supported

NMRA CV 224 - Not Supported

Not Supported

NMRA CV 225 - Not Supported

Not Supported

NMRA CV 226 - Not Supported

Not Supported

NMRA CV 227 - Not Supported

Not Supported

NMRA CV 228 - Not Supported

Not Supported

NMRA CV 229 - Not Supported

Not Supported

NMRA CV 230 - Not Supported

Not Supported

NMRA CV 231 - Not Supported

Not Supported

NMRA CV 232 - Not Supported

Not Supported

NMRA CV 233 - Not Supported

Not Supported

NMRA CV 234 - Not Supported

Not Supported

NMRA CV 235 - Not Supported

Not Supported

NMRA CV 236 - Not Supported

Not Supported

NMRA CV 237 - Not Supported

Not Supported

NMRA CV 238 - Dual Enabled Functions Part 1

This controls whether functions are Dual Enabled. To dual enable a light function take the value in the corresponding columns and sum them together, program that value into the CV

Function Button	Value
F0	1
F1	2
F2	4
F3	8
F4	16
F5	32
F6	64
F7	128

NMRA CV 239 - Dual Enabled Functions Part 2

This controls whether functions are Dual Enabled. To dual enable a light function take the value in the corresponding columns and sum them together, program that value into the CV

Function Button	Value
F8	1
F9	2
F10	4
F11	8
F12	16
F13	32
F14	64
F15	128

NMRA CV 240 - Dual Enabled Functions Part 3

This controls whether functions are Dual Enabled. To dual enable a light function take the value in the corresponding columns and sum them together, program that value into the CV

Function Button	Value
F16	1
F17	2
F18	4
F19	8
F20	16
F21	32
F22	64
F23	128

NMRA CV 241 - Dual Enabled Functions Part 4

This controls whether functions are Dual Enabled. To dual enable a light function take the value in the corresponding columns and sum them together, program that value into the CV

Function Button	Value
F24	1
F25	2
F26	4
F27	8
F28	16

NMRA CV 242 - Audio Assist Button Mapping

This CV controls what function button Audio Assist™ (and Light Mode and Sound Mode) are mapped to.
The value in the CV corresponds to what button Audio Assist™ will be mapped to. For example a value of 8 equates to function 8, a value of 14 equates to function 14.
A sound and or light can simultaneously be mapped to the Audio Assist button.
A value of 255 keeps Audio Assist from being assigned to a button.

NMRA CV 243 - Not Supported

Not Supported

NMRA CV 244 - BEMF Routine Frequency

Controls how often the BEMF routine is run, frequency is inverse to the CV value, the higher the value the less often the BEMF routine will run. This CV is useful for adjusting the BEMF for quick responding coreless motors or motors with large flywheels and a lot of momentum.

NMRA CV 245 - Not Supported

Not Supported

NMRA CV 246 - Not Supported

Not Supported

NMRA CV 247 - Not Supported

Not Supported

NMRA CV 248 - Sound Set Number

This CV depicts what Sound Set is loaded onto the micro SD card in the decoder. See the List of Sounds to determine what sounds are available in a particular version.

NMRA CV 249 - Decoder Model

This CV can be used to determine what the hardware make of the decoder is. Below is the make model numbers for all TCS decoders TCS decoders have store the Decoder Model in CV249. If you unsure what kind of decoder you have simply read the value in CV249 match it to its type in this table

@TODO Add links to each product description, or embed each product here?

NMRA CV 250 - Month of Manufacture

The value in this CV corresponds to the Month that the decoder was made by TCS in our shop Blooming Glen PA

NMRA CV 251 - Day of Manufacture

The value in this CV corresponds to the day of the month that the decoder was made by TCS in our shop Blooming Glen PA

NMRA CV 252 - Year of Manufacture

The value in this CV corresponds to the Year that the decoder was made by TCS in our shop Blooming Glen PA

NMRA CV 253 - Code Hash 1 of 4

This CV is used by TCS to track what firmware is in the decoder.

NMRA CV 254 - Code Hash 2 of 4

This CV is used by TCS to track what firmware is in the decoder.

NMRA CV 255 - Code Hash 3 of 4

This CV is used by TCS to track what firmware is in the decoder.

Make	Description	ID Number
DP2X	descript.	1
DP2X-UK	descript.	2
DP5	descript.	3
A4X	descript.	4
A6X	descript.	5
FL2	descript.	6
FL4	descript.	7
M1	descript.	8
M1P-15	descript.	9
M3	descript.	10
M4	descript.	11
MC2	descript.	12
MC4	descript.	13
T1	descript.	14
T1A	descript.	15
T4X	descript.	16
T6X	descript.	17
G8	descript.	18
ALD4	descript.	19
AMD4	descript.	20
ASD4	descript.	21
CN	descript.	22
CN-GP	descript.	23
EUN651	descript.	24
K0D8-A	descript.	25
K0D8-B	descript.	26
K0D8-C	descript.	27
K0D8-D	descript.	28
K1D4	descript.	29
K1D4-NC	descript.	30
K2D4	descript.	31
K3D3	descript.	32
IMD4	descript.	33
IMF4	descript.	34
IMFP4	descript.	35
IMFTA4	descript.	36
IMFTB4	descript.	37
MP-15N	descript.	38
VO-1000	descript.	39
MZA4	descript.	40
Z2	descript.	41
M4T	descript.	42
LL8	descript.	43
EU621	descript.	44
L1D4	descript.	45
K4D6	descript.	46
AS6	descript.	47
KAT12	descript.	48
KAT14	descript.	49
KAT16	descript.	50
KAT22	descript.	51
KAT24	descript.	52
KAT26	descript.	53
T4-LED	descript.	54
KAM4	descript.	55
K0D8-E	descript.	56
KAM4 LED	descript.	57
T1-LED	descript.	58
K5D7	descript.	59
LL8-LED	descript.	60
AZL4	descript.	61
MT1500	descript.	62
WOW100 (Steam)	descript.	129
WOW101 (Steam)	descript.	130
WOW121 (Steam)	descript.	131
WOW501 (Steam)	descript.	132
WOW101 (Diesel)	descript.	170
WOW121(Diesel)	descript.	171
WOW501 (Diesel)	descript.	172