Description
Designed to facilitate high-speed, multi-point serial data exchange within PLC systems, the CJ1W-SCU32 functions as a high-performance serial high-speed communication unit for Omron CJ-series controller configurations. This CPU Bus Unit mounts directly to the backplane, providing two high-speed serial ports configured for RS-422A/485 communications. It supports various protocols, including Modbus-RTU Easy Master, No-Protocol, Host Link, and Protocol Macros, allowing seamless integration with variable speed drives, temperature controllers, and third-party serial devices.
Features
- Dual RS-422A/485 serial communication ports.
- High-speed transmission rates up to 230.4 kbps for fast data throughput.
- Supports Protocol Macros, Host Link, No-Protocol, NT Link, Modbus-RTU Master, and Modbus-RTU Slave.
- Mounts directly to the CJ-series CPU Bus on the controller backplane.
- Simplifies serial network topologies with multi-drop configurations.
Applications
- Industrial automated assembly lines utilizing distributed remote I/O.
- Integration of temperature controllers, power meters, and barcode readers.
- Control of variable frequency drives (VFDs) and servo systems via Modbus.
- Substation monitoring and SCADA integration.
Technical Specifications
| Manufacturer |
Omron |
| Part Number/Model |
CJ1W-SCU32 |
| Unit Type |
CPU Bus Unit |
| Communication Ports |
2 x RS-422A/485 ports |
| Maximum Baud Rate |
230.4 kbps |
| Communication Protocols |
Protocol Macro, Host Link, No-Protocol, NT Link (1:N mode), Modbus-RTU Master, Modbus-RTU Slave |
| Current Consumption |
0.28 A at 5 VDC |
| Dimensions |
31 mm x 90 mm x 82 mm (W x H x D) |
Installation Guidelines
- Ensure the PLC system is completely powered down before mounting the unit to the backplane.
- Set the unit number rotary switches on the front panel before installation to avoid system address conflicts.
- Use shielded twisted-pair (STP) cables for RS-422A/485 connections to minimize electromagnetic interference.
- Verify correct termination resistor settings (ON/OFF) at the physical end-points of the network.