Since some throttles have a limited number of physical function buttons TCS created "Light Mode" and "Sound Mode". While in Light Mode function buttons will control lights, while in sound mode the function buttons will control sounds. To switch between the modes press function 8 twice in rapid succession and the decoder will announce mode you are now in, feedback can be disabled with CV176 "User Options 1 CV".
There are sometimes where you may want both a sound and a light to respond together with a single button press such as pressing F2 to blow the horn and blink the ditch lights, in this case you need the function to be "dual enabled"
NMRA CV 238| Dual Enabled Functions Part 1 |
|---|
| Range of Values | 0-255 |
|---|
| Default Value | 1 |
|---|
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 |
|---|
| Range of Values | 0-255 |
|---|
| Default Value | 1 |
|---|
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 |
|---|
| Range of Values | 0-255 |
|---|
| Default Value | 0 |
|---|
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 |
|---|
| Range of Values | 0-255 |
|---|
| Default Value | 0 |
|---|
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
|
