Omron CJ1W-SCU32 Operation Manual page 68

1 Introduction
• TERM: Terminating resistance ON/OFF switch
OFF:
ON:
• WIRE: 2-wire or 4-wire selector switch
2: 2-wire; 4: 4-wire
OFF
2
Serial Communications Unit
RS-232C
RS-232C
NT-AL001
Terminating resistance
ON, 5-V power
supply required
Also perform other required processing, such as setting switches on the external device(s).
Connection Example for Protocol Macro, Serial Gateway, No-protocol Mode,
and Modbus-RTU Slave Mode
Serial Communications
Unit
Terminating
resistance ON
Also perform other required processing, such as setting switches on the external device(s).
1-28
Terminating resistance OFF
Terminating resistance ON
ON
TERM
4
WIRE
NJ-series
B500-AL001
RS-422A
/485
RS-422A
/485
Terminating resistance
ON
Serial Communications Unit
RS-232C
RS-422A/485
General-purpose
external device
General-purpose
external device
Terminating
resistance ON
General-purpose
external device
CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit(W494)
NJ-series
General-purpose
external device