Omron SYSMAC CJ1W-SCU21-V1 User Manual

4
Overview Section 1-2
Note (1) The Host Link 1:1 and no-protocol modes are supported by unit version
1.2 or later.
(2) Only a 1:N NT Link is supported. A 1:1 NT Link is not supported.
(3) The Modbus-RTU slave mode is supported by unit version 1.3 or later.
A serial communications mode for the Serial Gateway is also provided,
enabling connection with the following devices.
1-2-2 Serial Communications Units
The Serial Communications Units are CPU Bus Unit. One or more Units can
be mounted to the CPU Unit or a CS/CJ Expansion Rack. A total of up to 16
CPU Bus Units can be controlled by one CPU Unit. The CS-series Serial
Communications Unit must be used for a CS-series PLC and a CJ-series
Serial Communications Unit must be used for a CJ-series PLC.
Two serial ports are provided for connecting host computers, Programmable
Terminals (PTs), general-purpose external devices, and Programming
Devices (excluding Programming Console). This makes it possible to easily
increase the number of serial ports for the CS/CJ-series PLC.
CS Series
PLC (Host Link)
CPU Unit
FINS message
FINS message
PLC (Host Link)
Serial Communi-
cations Board
with unit version
1.2 or later
Protocol
conversion
Protocol
conversion
Modbus-RTU-compatible
device (e.g., Inverter)
Modbus-ASCII-compatible
device (e.g., Servo)
CompoWay/F-
compatible
OMRON
component
Modbus-RTU-compatible
device (e.g., Inverter)
Modbus-ASCII-compatible
device (e.g., Servo)
CompoWay/F-
compatible
OMRON
component
Serial Communications Unit

Omron SYSMAC CJ1W-SCU21-V1 Specifications

General

Brand	Omron
Model	SYSMAC CJ1W-SCU21-V1
Category	Network Hardware
Language	English