Omron CJ1W-SCU32 Operation Manual page 125

1:1 Connections Using RS-422A/485 Ports
Serial Communications Unit
Signal Pin
RDA
RS-422A
RDB
/485 in-
SDA
terface
SDB
FG
Terminal block connector
Serial Communications Unit
Signal
RDA
RS-422A
RDB
/485 in-
terface
SDA
SDB
FG
Terminal block connector
CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit(W494)
Device that supports
RS-422A/485
communications
(2-wire)
Signal
Shield
RS-422A
/485 in-
A(−)
1
terface
B(+)
2
3
4
5
NT-AL001 Link Adapter
RS-422A
Pin
Shield
Pin Signal
Signal
1
2 1 GRD NC
3 2 SG SD
4 3 SDB RD
5 4 SDA RS
5 RDB CS
6 RDA 5V
7 CSB DR
8 CSA ER
SG
RS-422
D-sub, 9-pin
connector (male)
DIP Switch Settings
SW1-1: ON
SW1-2: ON (terminating resistance)
SW1-3: OFF
SW1-4: OFF
SW1-5: OFF
SW1-6: OFF
Serial Communications Unit
Signal Pin
RDA 1
RS-422A
RDB 2
/485 in-
SDA 3
terface
SDB 4
FG 5
Terminal block connector
Computer
RS-232C
Pin Signal
RS-232C
Interface
1 FG
2 SD
3 RD
4 RS
5 CS
6
7 DR
8 ER
9 SG
RS-232
5-V power
(+)
(-)
3 Installation and Wiring
Device that supports
RS-422A/485
communications
(4-wire)
Signal
Shield
RS-422A
SDA
/485 in-
SDB
terface
RDA
RDB
3
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