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Connecting to the Host’s RS-422A/485 Port Section 5-2
m = DM 30000 + 100 × unit number
Using the NT Link (1:1)
Method
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.
*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.
Allocated DM Area
words
Setting Setting Contents
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
PLC Series CPU Units with Built-in RS-422A NT
Link (1:1) Function
Model Name
C Series
C200HE-CPU32-(Z)E
(*1)
C200HE-CPU42-(Z)E
(*1)
C200HE(-Z)E
C200HG-CPU33-(Z)E
(*1)
C200HG-CPU43-(Z)E
(*1)
C200HG-CPU53-(Z)E
(*1)
C200HG-CPU63-(Z)E
(*1)
C200HG(-Z)E
C200HX-CPU34-(Z)E
(*1)
C200HX-CPU44-(Z)E
(*1)
C200HX-CPU54-(Z)E
(*1)
C200HX-CPU64-(Z)E
(*1)
C200HX-CPU65-ZE
(*1)
C200HX-CPU85-ZE
(*1)
C200HX(-Z)E
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-CPU11-EV2
CVM1-CPU21-EV2
CVM1