Omron NT631 Operation Manuals page 101

Connecting to the RS-232C Port at the Host
Wiring for a Memory Link connection
Cables with connectors that can be used:
CV500–CN228 (9–pin
XW2Z–S002 (9–pin
[Serial port A, B]
Prepare the adapter cable while referring to the following diagram.
NT631/NT631C
6
1
RS-232C
connector
(9-pin type)
9
5
⇔
25–pin, 2 m)
⇔
9–pin, 2 m)
Abbreviation Pin number
Shielding wire
Connector
FG
hood
−
1
SD 2
RD 3
RS
4
CS 5
+5V 6
−
7
−
8
SG 9
Section 4-1
Host side
Abbreviation
Connector
hood
SD
RS-232C
RD
connector
RS
CS
SG
93