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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
setPower	Power on/off	setPower(1)\n
setLocoSpeed	Locomotive address, Speed, (Speed Step)	setLocoSpeed(5,100,2)\n
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
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