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3 Installation and Wiring
3-4
CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit(W494)
3-2
Wiring
•
Before you connect or disconnect the communications cables, always make sure that the Controller
power is turned OFF.
•
Tighten the communications connector screws firmly with your fingers.
•
You can connect Serial Communications Units to various devices. For compatibility, refer to the oper-
ation manuals for the devices to be connected.
The following port types are provided on the Serial Communications Units.
The following sections describe the connection methods used for each serial communications mode
and Serial Communications Unit port.
The following table shows the relationship between the communications ports and the communications
modes for the Serial Communications Unit.
* You can be use the NT-AL001 Link Adapter to convert RS-232C to RS-422A/485 and vice versa to enable 1:N
communications.
3-2-1
Wiring Precautions
3-2-2
Port Types
Model
Port 1
Port 2
CJ1W-SCU22
RS-232C
RS-232C
CJ1W-SCU32
RS-422A/485
RS-422A/485
CJ1W-SCU42
RS-422A/485
RS-232C
3-2-3
Communications Modes and Ports
Communications mode
RS-232C
RS-422A/485
1:1
1:N (*)
1:1 4-wire
1:N 4-wire
1:1 2-wire
1:N 2-wire
Protocol Macros
Yes
Yes
Yes
Yes
Yes
Yes
Serial Gateway
Yes
Yes
Yes
Yes
Yes
Yes
No-protocol
Yes
Yes
Yes
Yes
No
No
Modbus-RTU Slave
Yes
Yes
Yes
Yes
Yes
Yes
Содержание CJ1W-SCU22
Страница 192: ...4 Using Protocol Macros 4 56 CJ series Serial Communications Units Operation Manual for NJ series CPU Unit W494...
Страница 250: ...6 No protocol Mode 6 22 CJ series Serial Communications Units Operation Manual for NJ series CPU Unit W494...
Страница 460: ...A Standard System Protocol R 126 CJ series Serial Communications Units Operation Manual for NJ series CPU Unit W494...
Страница 473: ...Index 1 CJ series Serial Communications Units Operation Manual for NJ series CPU Unit W494 I Index...