Omron NT31

145
Connecting to the Host’s RS-422A/485 Port
Section 5-2
5-2-6 Recommended Connectors, Cables and Crimp Terminals
 Connectors and cables recommended for RS-422A/485
When making an RS-422A/485 connecting cable, as far as possible use the rec-
ommended parts indicated in the table below. When using the memory link
method, however, use a connector that matches with the RS-422A port at the
CPU (CP) side. Some units come supplied with one connector and connector
hood.
Check the required parts and prepare them in advance.
Name Model Maker Remarks
XM2A-2501
25-pin type
Made by OMRON
Delivered with the following units:
C500-LK203
Connector
DB-25P F-N
25-pin type
Made by JAE
Delivered with the following units:
3G2A6-LK201-EV1
3G2A5-LK201-EV1
XM2S-2511
25-pin type
Made by OMRON
Delivered with the following units:
C500-LK203
Connector
hood
DB-C2-J9
25-pin type
Made by JAE
Delivered with the following units:
3G2A6-LK201-EV1
3G2A5-LK201-EV1
Cable TKVVBS4P-03
Tachii Electric
Wire Co., Ltd.
Crimp
1.25-N3A
(fork type)
Japan Solderless
Terminal MFG
Recommended cable size:
Crimp
terminals
Y1.25-3.5L
(fork type)
Morex Inc.
AWG22 to 18
(0.3 to 0.75 mm
2
)
The terminal screws of the RS-422A adaptor (CPM1-CIF11) are M3 specifica-
tion. When wiring, use crimp terminals for M3 use. Tighten terminal screws with
a tightening torque of 0.5 N@m.
Use the same specification of the terminal screws which is used in the relay ter-
minal block.
Note Always use crimp terminals for wiring.
- Examples of applicable terminals
Fork type
6.2 mm or less
Round type
6.2 mm or less