CJ-series Serial Communications Units CJ1W-SCU CSM CJ1W-SCU DS E 7 1 The Serial Communications Units That Enable High-speed Connections with External Devices Each Serial Communications Unit provides two serial communications ports: RS-232C and RS-422A/485, and the serial communications mode can be set separately for each port from Protocol Macro, Host Link, NT Link, Serial CJ1W-SCU22 CJ1W-SCU32 CJ1W-SCU42 Gateway, and No-protocol. Features Mount a total of up to 16 CPU Bus Units, including these Serial Communications Units, to the CPU Rack or Expansion Racks to create systems with up to 32 serial communications ports. Connect an NT-AL001 RS-232C/RS-442A Link Adapter to the RS-232C port to enable 1:N communications. With the CJ1W-SCU 2, you can use a faster baud rate (up to 230.4 kbps) and faster data transfer to the CPU Unit to enable connecting to high-speed external devices. System Configuration Programing Devices Host Computer Modbus-RTU Master (Host computers) or Serial Communications Units CPU Unit Programmable Terminal (PT) RS-232C/RS-422A Adapter NT-AL001 Protocol Macro General-purpose External Device No-protocol General-purpose External Device Serial Gateway (Host Link(FINS)) CJ-series Controller (Host Link slave) Serial Gateway (Compoway/F) Smart Sensor Temperature Controller 1CJ1W-SCU Ordering Infomation International Standards The standards are abbreviated as follows: U: UL, U1: UL(Class I Division 2 Products for Hazardous Locations), C: CSA, UC: cULus, UC1: cULus (Class I Division 2 Products for Hazardous Locations), CU: cUL, N: NK, L: Lloyd, and CE: EC Directives. Contact your OMRON representative for further details and applicable conditions for these standards. Current Specifications No. of unit consumption (A) Unit type Product name numbers Model Standards Communications allocated Communications functions 5V 24V Interface CJ1 CPU Serial The following functions can be Bus Units Communications selected for each port with an CJ- Units system: Protocol macro High-speed type 0.28 Host Link 2 RS-232C ports CJ1W-SCU22 *2 *1 NT Links (1:N mode) Serial Gateway No-protocol *3 Modbus-RTU Slave UC1, N, 1 L, CE The following functions can be selected for each port with an NJ- 2 RS-422A/485 ports 0.40 CJ1W-SCU32 *2 system: Protocol macro Serial Gateway No-protocol 1 RS-232C port and 0.36 Modbus-RTU Slave CJ1W-SCU42 *2 1 RS-422A/485 port *1 CJ1 CPU Serial The following functions can be 0.28 Bus Units Communications selected for each port: 2 RS-232C ports CJ1W-SCU21-V1 *8 *1 Units Protocol macro *4 Host Link NT Links (1:N mode) UC1, N, 2 RS-422A/485 ports 1 0.38 CJ1W-SCU31-V1 *8 Serial Gateway *5 L, CE No-protocol *6 Modbus-RTU Slave *7 1 RS-232C port and 0.38 CJ1W-SCU41-V1 *8 1 RS-422A/485 port *1 *1. When an NT-AL001 RS-232C/RS-422A Conversion Unit is used, this value increases by 0.15 A/Unit. *2. Sinple Backup Function and Interrupt notification function cannot be used with an NJ-system. *3. A Serial Communications Unit with unit version 2.1 or later, a CPU Unit with unit version 1.03 orlater, and Sysmac Studio version 1.04 or higher are required to use the SerialRcvNoClear instruction. *4. You can activate Protocol macro trace function when the CPU Unit is set to the RUN/MONITOR mode. (MONITOR mode is not available with the NJ-series CPU Units.) *5. The Serial Gateway function is enabled only for Serial Communications Units of unit version 1.2 and later. *6. The no-protocol function is enabled only for Serial Communications Units of unit version 1.2 and later (and a CPU Unit of unit version 3.0 or later is also required). *7. The Modbus-RTU Slave function is enabled only for Serial Communications Units of unit version 1.3 and later. *8. This unit cannot be used, with the Machine Automation Controller NJ-series. Accessories Model Accessories Specifications CJ1W-SCU22 2 Serial Port (RS-232C) Connector Connector set for serial port connection (D-SUB 9-pin male connector) CJ1W-SCU32 2 Serial Port (RS-422A/485) Connector Terminal Block Connector (FMC1.5/5-STF-3.5AU by Phoenix Contact) 1 Serial Port (RS-232C) Connector Connector set for serial port connection (D-SUB 9-pin male connector) CJ1W-SCU42 1 Serial Port (RS-422A/485) Connector Terminal Block Connector (FMC1.5/5-STF-3.5AU by Phoenix Contact) CJ1W-SCU21-V1 CJ1W-SCU31-V1 2 Serial Port (RS-232C) Connector Connector set for serial port connection (D-SUB 9-pin male connector) CJ1W-SCU41-V1 Mountable Racks NJ system CJ system (CJ1, CJ2) CP1H system NSJ system Model Expansion Expansion NSJ Expansion CPU Rack *4 CPU Rack CP1H PLC Rack *4 Backplane Controller Backplane CJ1W-SCU22 Unit version 2.0 10 Units CJ1W-SCU32 Unit version 2.0 10 Units (per Expansion Backplane) 10 Units *2 10 Units *2 CJ1W-SCU42 Unit version 2.0 10 Units *1 (per Expansion 2 Units *3 Not supported (per Expansion CJ1W-SCU21-V1 Unit version 1.3 Backplane) Backplane) CJ1W-SCU31-V1 Unit version 1.3 Not supported CJ1W-SCU41-V1 Unit version 1.3 Note: It may not be possible to mount this many Units to a Rack depending on the current consumption of the other Units. *1. This is the number of Units for a CJ2H-CPU6 CJ2H CPU Unit (without EtherNet/IP) and a CJ1W-PA205 or CJ1W-PD025 Power Supply Unit. (When not using NT-AL001) *2. This is the number of Units for a CJ1W-PA205 or CJ1W-PD025 Power Supply Unit. *3. A CP1W-EXT01 CJ Unit Adaptor is required *4. A total of up to 16 Units, including all other CPU Bus Units. 2