A-3-5 Pin Arrangement - Omron NS Series Setup Manual

Appendix 3 Using NS-AL002 Converters
A-3-5 Pin Arrangement
The Adapter has a connector for RS-232C interface connection and a terminal block for
RS-422A/485 interface connection.
The pin arrangements for the RS-232C connector and RS-422A/485 terminal block are as
follows:
● RS-232C Connector
● RS-422A Terminal Block
A-20
Terminal block Signal name
pin number
1 NC
2 RD
3 SD
4 CS
5 RS
6 5 V
(30 mA max.)
7 or 8 NC
9 SG
Connector hood FG
Terminal block
Signal name
pin number
1 FG
2 RDB (+)
3 SDB (+)
4 RSB (+)
5 NC
6 RDA (−)
7 SDA (−)
8 RSA (−)
Signal direction
Adapter ⇔ PT
←
→
← (RS signal short-circuited internally)
→
←
(Pins 7 and 8 are short-circuited.)
−
Connects to functional ground terminal of PT.
Signal direction
Adapter ⇔ Host
Connects to functional ground terminal of PT.
←
→
→
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←
→
→