Omron CQM1H-SCB41 Operation Manual page 303

K3T@ Intelligent Signal Processor Protocol
RS422A/485 Connections
CQM1H
Serial Communica-
tions Board
RS-422A/485 port
• RS-422A
288
Signal name
Send data A
Send data B
Receive data A
Receive data B
Signal ground
Protective ground
Serial Communications
RS-422A: D-sub
Board
9-pin female
Terminating
Signal Pin
resistance
Name
No.
Terminating
Shielded
resistance
cable
(terminator)
K3T@
K3T@
Up to 32 units can be connected
K3T@
Abbreviation Signal direction
SDA Output
SDB Output
RDA Output
RDB Input
SG –
FG –
Intelligent Sig
nal Processor
Pin
No.
RS-422A:
Terminal block
Terminal block SW
Signal
Termi-
Name
nal.
Terminating resistance (approx. 220 ) is
connected via the terminal block switch.
Appendix I
Pin No.
9
5
6
1
3
7
SN751177N or
equivalent