Omron NT631C manual Using the NT Link 11 Method, = DM 30000 + 100 ⋅ unit number

Connecting to the Host’s RS-422A/485 Port Section 5-2

Using the NT Link (1:1) Method

				m = DM 30000 + 100 ⋅ unit number
Allocated DM Area			Setting	Setting Contents
	words
Port 1		Port 2
m		m+10	8000	Host link mode, 2 stop bits,
				even parity, data length 7 bits
m+1		m+11	0000	Communications speed: 9600 bps
			0007	Communications speed: 19200 bps
m+2		m+12	0000	Transmit delay time 0 ms
m+3		m+13	0000	No CTS control Unit, No.0 for host link

Compatible Host Units

Some models and series of OMRON PLCs have the RS-422A NT Link (1:1) function built in.

•The C200HX/HG/HE(-Z)E CPU Units can be connected by the RS-422A NT Link (1:1) method by installing a Communications Board.

•The CQM1H CPU Units can be connected by the RS-422A NT Link (1:1) method by installing a Serial Communications Board.

Check the model and series of the PLC against the type of CPU Unit before making the connections.

The hosts that can be connected to the RS-422A port of the NT631/NT631C by the RS-422A NT Link (1:1) method are indicated in the table below.

PLC Series	CPU Units with Built-in RS-422A NT	Model Name
	Link (1:1) Function
C Series	C200HE-CPU32-(Z)E(*1)	C200HE(-Z)E
	C200HE-CPU42-(Z)E(*1)
	C200HG-CPU33-(Z)E(*1)	C200HG(-Z)E
	C200HG-CPU43-(Z)E(*1)
	C200HG-CPU53-(Z)E(*1)
	C200HG-CPU63-(Z)E(*1)
	C200HX-CPU34-(Z)E(*1)	C200HX(-Z)E
	C200HX-CPU44-(Z)E(*1)
	C200HX-CPU54-(Z)E(*1)
	C200HX-CPU64-(Z)E(*1)
	C200HX-CPU65-ZE(*1)
	C200HX-CPU85-ZE(*1)
	CQM1H-CPU51/61	CQM1H
CV Series (*3)	CV500-CPU01-EV1	CV500
	CV1000-CPU01-EV1	CV1000
	CV2000-CPU01-EV1	CV2000
CVM1 Series (*3)	CVM1-CPU01-EV2	CVM1
	CVM1-CPU11-EV2
	CVM1-CPU21-EV2

*1 One of the following Communications Boards is required: C200HW-COM03-EV1 or C200HW-COM06-EV1.

*2 A CQM1H-SCB41-E Serial Communications Board is required.

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