Omron SYSMAC CS1W-SCB41-V1 Operation Manual page 631

K3T @ Intelligent Signal Processor Protocol
RS-422/485 Connections
Serial Communications Board
(CS Series only)
Serial Communications Unit
(CS/CJ Series)
RS-422/485 port
• RS-422 4-wire Connections
Serial Communications
Board/Unit
*1: Set the 2-/4-wire switch
to the 4-wire setting.
*2: Turn ON the terminat-
ing resistance switch.
602
PLC PS
Signal name
Send data A
Send data B
Receive data A
Receive data B
Signal ground
Protective ground
Intelligent Sig-
nal Processor
RS-422: D-sub
9-pin female
RS-422:
Terminal block
Signal Pin
Name
No.
Signal
Termi-
Name
FG nal.
Hood
9 SDA
RDA 6
RDB SDB
8 5
6
SDA
1 RDA
1
SDB RDB
2
3 SG
Shield
Terminating resistance (approx. 220 Ω) is
connected via the terminal block switch.
K3T#
RS-422/485
K3T#
RS-422/485
Up to 32 units can be connected
K3T#
RS-422/485
Abbreviation Signal direction
SDA Output
SDB Output
RDA Output
RDB Input
SG ---
FG ---
SN751177N or
equivalent
Terminal block SW
220 Ω
220 Ω
6.8 V
Appendix L
Pin No.
9
5
6
1
3
7