Omron CJ1W-SCU42 CJ Series Dual Serial Communication Unit RS-232 RS-485
SKU: CJ1W-SCU42USD 158.00
Omron CJ1W-SCU42 is a dual serial communication unit for CJ series PLCs with two RS-232/RS-485 ports for multiple serial connections.
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Product Overview
The Omron CJ1W-SCU42 is a dual-port serial communication module for CJ1 series PLCs, providing flexible connectivity for industrial automation systems requiring interface to multiple serial devices. This module features two independent serial ports: one RS-232C port and one RS-485 port, enabling connection to a wide variety of field devices. The RS-232C port supports point-to-point communication with devices such as HMI terminals, programming tools, and serial printers. The RS-485 port supports multi-drop connections for up to 32 devices, ideal for networks of drives, sensors, or other serial-equipped equipment. The CJ1W-SCU42 supports multiple protocols including Omron-specific protocols, Modbus RTU, and general ASCII communication, providing flexibility for integrating diverse automation equipment. The module includes comprehensive buffer memory for handling high-speed data exchange without impacting PLC scan time. Easy configuration is achieved through CX-Programmer or the module front panel switches, allowing quick setup of communication parameters. The CJ1W-SCU42 is hot-swappable, allowing module replacement without powering down the entire PLC system. LED status indicators provide at-a-glance monitoring of communication activity and error conditions. Applications include connection to multiple VFDs, barcode scanner integration, serial HMI connections, and legacy device interface.
- SKU: CJ1W-SCU42
- Series: CJ1W
Best-Fit Applications
- Multiple VFD control
- Barcode scanner integration
- Serial HMI connections
- Weigh scale communication
- Legacy equipment interface
- Serial printer output
- Multi-drive networks
- Remote I/O communication
Buying Checklist
- Dual ports for flexible connectivity
- RS-485 enables networked devices
- Modbus support for third-party devices
- Hot-swappable for easy maintenance
- Independent port configuration
- LED diagnostics for troubleshooting
- Proven CJ1 compatibility
- Omron quality and support
Technical Specifications
| Model | CJ1W-SCU42 |
|---|---|
| Series | CJ1W |
| Type | Dual Serial Communication Unit |
| Ports | 2x RS-232C/RS-422/RS-485 |
| Protocols | Host Link, Modbus-RTU, NT Link, Protocol Macro |
| Baud Rate | 300 bps to 115.2 kbps |
| Current Consumption | 250mA at 5VDC |
| Compatible CPUs | CJ1M, CJ1G, CJ1H, CJ2M, CJ2H |
| Operating Temperature | 0 to +55°C |
| Mounting | CJ series backplane |
Resources & Downloads
FAQ for CJ1W-SCU42
What's the advantage of dual serial ports?
Two independent serial channels. Connect multiple devices: HMI + barcode reader, or two Modbus networks. Each port independently configurable.
Can I use different protocols on each port?
Yes, each port independently configurable. Port 1: Modbus-RTU master. Port 2: Host Link for HMI. Different baud rates, parity on each port.
How many devices can I connect?
RS-232C: 1 device per port (point-to-point). RS-485: up to 32 devices per port (multi-drop). Total depends on port configuration.
Do I need to configure both ports?
Yes, configure each port independently in CX-Programmer. Set protocol, baud rate, parity for each port. Configuration downloads to CPU.
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