Digitrax Decoder Index

CV33-46: Function Remapping

Function remapping allows you to set up which function outputs are controlled by which function controls on your throttle. You can even control more than one function output with one control. Use the table below to determine the CV values to program to the function remapping CVs to make the function controls on your throttle control the decoder function outputs the way you want them to work.

Each row shows a function control key on your throttle and its associated control CV. The columns show the function outputs on your decoder that you can remap to be controlled by the function controls on your throttle. We show these as the wire colors related to each function output. In the case of decoders without function wires attached, check the wiring diagram to determine what color the wire would be if there were one attached to the decoder. On the following table, a dot in any column indicates the default throttle function control key that controls the decoder function output.

You can remap more than one function output to be controlled by a single throttle function control key. Not all remapping combinations are available, only the ones shown on the three tables below.

		Decoder Output Colors
Throttle Function	Map CV	White	Yellow	Green	Violet	Brown	White Yellow	White Green	White Blue	Default Value
Add Value to Include		000 x01	002 x02	004 x04	008 x08	016 x10	032 x20	064 x40	128 x80
F0F	CV33	l								001/x01
F0R	CV34		l							002/x02
F1	CV35			l						004/x04
F2	CV36				l					008/x08
F3	CV37					l				016/x10

		Decoder Output Colors
Throttle Function	Map CV	Violet	Brown	White Yellow	White Green	White Blue	Default Value
Add Value to Include		001 x01	002 x02	004 x04	008 x08	016 x10
F4	CV38			l			004/x04
F5	CV39				l		008/x08
F6	CV40					l	016/x10
F7	CV41						032/x20
F8	CV42						064/x40

		Decoder Output Colors
Throttle Function	Map CV	White Green	White Blue	Default Value
Add Value to Include		001 x01	002 x02
F9	CV43			016/x10
F10	CV44			032/x20
F11	CV45			064/x40
F12	CV46			128/x80

Click here for Function Remapping Application Note with additional examples.

Example of Function Remapping

To remap functions, place dots in the appropriate columns, add up the numbers and program the decoder with the hex values derived.

The following example shows how to remap as follows:

F0 non-directional controlling both White & Yellow Outputs

F1 controls Green

F2 and F8 control Violet. Turns Violet ON when either F2 or F8 is ON.

F3 controls Yellow

F5 controls White with Yellow Stripe and White with Green Stripe

F6 controls nothing

F7 controls Brown

Example of Function Remapping CV Value Computations

		Decoder Output Colors
Throttle Function	Map CV	White	Yellow	Green	Violet	Brown	White Yellow	White Green	White Blue	Value to Program
Add Value to Include		000 x01	002 x02	004 x04	008 x08	016 x10	032 x20	064 x40	128 x80
F0F	CV33	l								001/x01
F0R	CV34	l								001/x01
F1	CV35			l						004/x04
F2	CV36				l					008/x08
F3	CV37		l							002/x02

		Decoder Output Colors
Throttle Function	Map CV	Violet	Brown	White Yellow	White Green	White Blue	Value to Program
Add Value to Include		001 x01