Delta DVP-ES2/EX2/SS2/SA2/SX2/SE manual REV / Stop / Rdst / Rstef / Modrw

	3. Instruction Set
Special register	Function
	Feedback data (ASCII) of Modbus communication. When PLC’s
	RS-485 communication instruction receives feedback signals, the data
D1070~D1085	will be saved in the registers D1070~D1085 and then converted into
	Hex in other registers.
	RS instruction is not supported.
	Sent data of Modbus communication. When PLC’s RS-485
	communication instruction (MODRD) sends out data, the data will be
D1089~D1099	stored in D1089~D1099. Users can check the sent data in these
	registers.
	RS instruction is not supported
D1120	COM2 (RS-485) communication protocol. Refer to the following table in
	point 4 for protocol setting.
D1121	COM1 (RS-232) and COM2 (RS-485) PLC communication address
	when PLC is slave.
D1122	COM2 (RS-485) Residual number of words of transmitting data.
D1123	COM2 (RS-485) Residual number of words of the receiving data.
	COM2 (RS-485) Definition of start character (STX) Refer to the
D1124	following table in point 3 for the setting.
	Supported communication instruction: RS
	COM2 (RS-485) Definition of first ending character (ETX1) Refer to the
D1125	following table in point 3 for the setting.
	Supported communication instruction: RS
	COM2 (RS-485) Definition of second ending character (ETX2) Refer to
D1126	the following table in point 3 for the setting.
	Supported communication instruction: RS
	COM2 (RS-485) Communication time-out setting (unit: ms). If users set
	up time-out value in D1129 and the data receiving time exceeds the
D1129	time-out value, M1129 will be set ON and the error code K1 will be
	stored in D1130. M1129 has to be reset manually when time-out status
	is cleared.
	COM2 (RS-485) Error code returning from Modbus. RS instruction is
D1130	not included.
	Supported communication instructions: MODRD / MODWR / FWD /
	REV / STOP / RDST / RSTEF / MODRW

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