Omron NT31

127
Connecting to the Host’s RS-422A/485 Port
Section 5-2
When Using the NT Link (1:1) Method
 Compatible host units
Some models and series of OMRON PCs have the RS-422A type NT link (1:1)
function built in. There are also some C200HX/HG/HE(-ZE) CPUs that can be
connected by the RS-422A type NT link (1:1) method by installing a communica-
tion board.
Check the model and series of the PC against the type of CPU before making the
connections.
The host units that can be connected to the RS-422A port of the NT31/NT31C by
the RS-422A type NT link (1:1) method are indicated in the table below.
PC Series CPUs with Built-in RS-422A type NT Link (1:1) Function Model Name
C200HE-CPU32-(Z)E
(*1)
C200HE-CPU42-(Z)E
(*1)
C200HE
(-ZE)
C200HG-CPU33-(Z)E
(*1)
C200HG-CPU43-(Z)E
(*1)
C200HG-CPU53-(Z)E
(*1)
C200HG-CPU63-(Z)E
(*1)
C200HG
(-ZE)
C series
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
(-ZE)
CV500-CPU01-EV1 CV500
CV series
(*2)
CV1000-CPU01-EV1 CV1000
(*2)
CV2000-CPU01-EV1 CV2000
CVM1
series
(*2)
CVM1-CPU01-EV2
CVM1-CPU11-EV2
CVM1-CPU21-EV2
CVM1
*1 One of the following communication boards is required:
C200HW-COM03-EV1 or C200HW-COM06-EV1.
*2 CPUs of CVM1/CV series PCs without the suffix “-EV” cannot be connected.
The NT link (1:1) method cannot be used using RS-485. To use the NT link (1:1)
method, connect by RS-422A.
NT link connection using RS-422A is not possible with CPM1.