OMRON 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.(1)