CJ1W-SCU41-V1 Serial Communications Unit 1 RS-232C Port and RS-422A/485 Port NN

[Device name] Serial Communications Unit

[Classification] CPU Bus Unit

[Serial ports] Port 1: RS-422A/485

Port 2: RS-232C

[Protocol] Host Link, protocol macro, NT Link, or loopback test can be selected for each port.

Unit Ver. 1.2 or later also supports Serial Gateway, no-protocol, and 1:1 Host Link modes.

(Note: The Serial Gateway can also be executed in protocol macro mode.) *1

Unit Ver. 1.3 or later also supports Modbus-RTU slave mode.

[Number of mountable Units] A total of up to 16 Units, including all other CPU Bus Units.

No restrictions on the mounting location.

[Data exchange with the CPU Unit] Ordinary refreshing of software switches and status: Allocated 25 words of the 25 words in the CPU Bus Unit CIO Area (constant data exchange with the CPU Unit)

Transfer from the CPU Unit set by the system: Of the CPU Bus Unit DM Area, each serial port is allocated 10 words (total 20 words).

Data is transferred from the CPU Unit at the following times:Startup or restart

Ladder instruction: STUP (237)

Port Settings Changing Flag turns ON (Auxiliary Area)

[Simple Backup Function] The CPU Unit's Simple Backup Function can be used to backup the Protocol Macro data in the Serial

Communications Unit to the CPU Unit's Memory Card. The backed-up data can be restored or compared.

(The Simple Backup Function can be used with the CJ1-H and CJ1M CPU Units only.)

[Current consumption] 380mA+x

[Weight] 110g max.

[General specifications] Conforms to general specifications for CJ Serise.