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Product Description
The Omron CJ1W-SCU41-V1 is a versatile and reliable serial communications unit for CJ1W/NJ series PLCs, facilitating seamless connection with external devices via RS-232C and RS422/485 ports. Supporting protocols like ASCII, BYTE, and Modbus RTU, it offers high-speed communication (up to 100 kHz) with half-duplex asynchronous transmission and start-stop synchronization for enhanced data accuracy. Ideal for diverse industrial applications, it supports up to 32 units, features backup and interrupt notification for data integrity, acts as a serial gateway (CompoWay/F, Modbus-RTU/ASCII, Host Link), and provides IP20 protection. Its programming flexibility (ladder logic, structured text, function block diagrams), Ethernet/USB connectivity, and low power consumption (0.38 A at 5 VDC) make it a robust solution for dependable data exchange between PLCs and other devices.
Is Your Device Showing These Signs?
The Omron CJ1W-SCU41-V1 commonly experiences communication failures due to incorrect serial port configuration, baud rate mismatches, or faulty RS-232/RS-422 cabling. Resolve issues by verifying the PLC's serial communication settings, ensuring proper termination resistors are installed, and replacing damaged cables. Parameter corruption within the PLC's memory can also cause erratic behavior; therefore, a memory clear and program reload is essential. Finally, firmware incompatibility between the SCU41-V1 module and the PLC CPU necessitates a firmware upgrade to ensure seamless integration and proper functionality.
Technical specifications
The Omron CJ1W-SCU41-V1 is a reliable serial communications unit for CJ1W/NJ PLCs, enabling connection with external devices via RS-232C/RS422/485. It supports ASCII, BYTE, and Modbus RTU protocols, high-speed communication, and features like backup, interrupt notification, and serial gateway functionality. It's suitable for various industrial applications due to its programming flexibility, Ethernet/USB connectivity, and low power consumption.
Our Repair Process for the
CJ1W-SCU41-V1
Our repair process for Omron CJ1W-SCU41-V1 communication failures begins with a thorough verification of the PLC's serial communication settings, confirming correct configuration and baud rate. Next, inspect the RS-232/RS-422 cabling for damage and ensure proper termination resistors are installed; replace any faulty cables immediately. If communication issues persist, a memory clear is performed, followed by a program reload to eliminate potential parameter corruption. As a final step, confirm firmware compatibility between the SCU41-V1 module and the PLC CPU; perform a firmware upgrade if incompatibility is detected.
Your Guarantee: Warranty & Lifetime Support
Your satisfaction is our top priority, and we confidently stand behind the quality of our repairs. That's why every repair service is covered by our comprehensive 24-month warranty. Furthermore, we offer lifetime phone support – if you have questions or need assistance related to our repair down the road, we're here to help. Our service commitment is straightforward: we guarantee our work, and if you're not satisfied, we will make it right. Learn More about our Repair process.
Comprehensive Repairs You Can Depend On
We take immense pride in the quality and reliability of our work. Our process goes beyond simply fixing the immediate problem. We perform a comprehensive inspection of your main board (or other equipment) and proactively replace components known to be failure-prone or showing signs of potential future failure. Before any item is returned, it undergoes rigorous functional testing to ensure it meets performance specifications and operates flawlessly. Visit our main Repair Services page to learn more.
Save Significantly
Our primary goal is to save you hundreds, or even thousands, of dollars compared to the cost of new equipment replacement. By repairing existing components, we provide an economical solution that is also eco-friendly. At Roc Industrial, our commitment to integrity and community drives our consistent growth and ensures you receive a reliable, cost-effective solution.


Please Note: Roc Industrial operates as an independent service provider and is not an authorized distributor for the manufacturers or brands mentioned. Consequently, the original manufacturer's warranty is not applicable to items repaired or sold by us. Roc Industrial provides its own 2-year warranty on all repair services performed.
Buying Options
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Ships from Rochester, NY