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Serial Communication Specification

How to communicate

The following table describes serial communication configuration.

Parity	None
Data Bits	8
Stop Bit	1
Bit rate	115200bps (Default)	It depends on the configuration of Arduino's sketch

Desktop Station sends to Arduino with DSmain or DCC/MM2 shield that the end of command text is as line feed code “\n (0x0A)”.

Commands	Parameters	examples
setLocoDirection	Locomotive address, Locomotive Direction	setLocoDirection(5,1)\n
setLocoFunction	Locomotive address, Function No, Function On/Off	setLocoFunction(5,1,1)\n
setTurnout	Accessory address, Turnout Direction	setLocoDirection(5,1)\n
setPower	Power on/off	setPower(1)\n
setLocoSpeed	Locomotive address, Speed, (Speed Step)	setLocoSpeed(5,100,2)\n
getS88	S88 decoder count	getS88(2)\n
setLocoConfig	dammy, CV No, CV Value	setLocoConfig(0,1,3)\n

Parameter	Value range	meanings
Power on/off	0-1	0: Power Off, 1: Power On
Locomotive address	0-65535	See DSCore specification address description.
Speed	0-1023	1023 means max speed. 0 means stop locomotive.
Speed step	0-2	0: DCC28 or MM2 14, 1:DCC14, 2:DCC128
Function No	0-28	Locomotive's function number
Function Value	0-1	Locomotive's function ON(1) or OFF(0)
Locomotive Direction	1-2	1:FWD, 2:REV
Accessory address	0-1024	DCC:1-1024, MM2: 1-320
Accessory Direction	0-1	1:Straight, 0: diverging
S88 decoder count	0-32	Set connected S88 decoder count.
dammy	0	Set 0.
CV No	0-255	Locomotive's CV number
CV Value	0-255	Locomotive's CV Value