Delta DVP-ES2/EX2/SS2/SA2/SX2/SE manual Points to note, COM2 COM3

3. Instruction Set

Points to note:

Relative flags and special D registers of COM2/COM3 :

	COM2	COM3	Function Description
	M1120	M1136	Retain communication setting
Protocol	M1143	M1320	ASCII/RTU mode selection
setting
	D1120	D1109	Communication protocol
	D1121	D1255	PLC communication address
Sending	M1122	M1316	Sending request
request
	D1129	D1252	Communication timeout setting (ms)
Receiving	M1127	M1318	Data receiving completed
completed
	-	M1319	Data receiving error
	-	D1253	Communication error code
	M1129	-	Communication timeout setting (ms)
	M1140	-	COM2 (RS-485) MODRD/MODWR/MODRW
			data receiving error
Errors
			MODRD/MODWR/MODRW parameter error
	M1141	-	(Exception Code exists in received data)
			Exception Code is stored in D1130
	D1130	-	COM2 (RS-485) Error code (exception code)
			returning from Modbus communication

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