Troubleshooting Omron CJ1W CLK 23 Network Error: Note1 CLK Network Controller Errors

Question:

I am a newcomer in the field of programmable logic controllers (PLCs) and am facing challenges in our factory related to the CLK network. Our factory machines are linked by a CLK 23 network with 5 Omron PLCs. We are encountering an error message on the HMI indicating "Note1 CLK network" followed by CLK net controller 3, 4, 5 errors. This has prevented us from running our machines in automatic mode, although manual operation is still possible for each machine. I am seeking assistance in identifying the root cause of this issue.

Top Replies

It appears that the connection is made via a controller link, which is unfamiliar to me. I need to investigate the physical connections to ensure they are secure and not loose or disconnected.

Chavak mentioned that the connection appears to be made through a controller link, which they are not familiar with. They plan to inspect the physical connection for any disconnections or looseness. The equipment is connected using a 2-core shielded wire, but despite following Omron specifications and checking all connections, errors still occur when running all machines automatically. Running the machines manually allows them to run smoothly and clear any errors on the HMI display.

From your description, it seems like there might be communication issues in your CLK network. One possibility could be faulty cabling or connectors, as they often contribute to network problems in factory settings. Another potential issue might be with the PLC's network cards. Check if they're functioning properly and are configured correctly. Also, ensure the latest drivers and firmware are installed. In some instances, a simple power cycle (turn it off and on again) of the corrupted PLCs can rectify minor errors. Keep in mind, it's always beneficial to consult the machine's manual or Omron's technical support for troubleshooting guide for the specific error codes you're seeing. Remember, your safety should always be a priority when troubleshooting these issues.

It sounds like you're encountering an issue with the communication between your HMIs and PLCs. Typically, a "Note1 CLK network" message indicates a network communication problem. There could be several causes for this - issues with cabling, termination, noise, or even a faulty PLC. You might want to check the physical network first for any broken cables or loose connections. Next, ensure that the termination resistors at both ends of the network cable are correct and properly installed. Additionally, consider the possibility of electromagnetic interference causing noise in your system; this could be rectified by using shielded cables. Lastly, it may be worth swapping out PLCs in case one is faulty. Always remember to follow safe procedure when troubleshooting your PLCs.

Hi there, problems with PLC networks can be tricky, I understand your predicament. From what you've described, it's highly likely that there's communication disruption between your network and PLCs 3, 4, and 5. I would suggest you check the wirings first. Any damage or loose connections can interrupt the signal. If all the connections are fine, then the issue might be in the PLC programming or on the network controller side. One less typical cause might be electromagnetic interference. It essentially "confuses" the communication on your CLK network. So, look for any new equipment or power cables laid close to your network. Either way, I'd recommend bringing in a specialist for a thorough on-site check. Don't worry, you'll get through this. Hang in there!

It sounds like you’re dealing with a tricky situation! The "Note1 CLK network" error usually points to communication issues among the PLCs. I would recommend checking the wiring and connections first, especially for PLCs 3, 4, and 5, as loose connections or damaged cables can lead to network failures. Additionally, ensure that all PLCs are updated with the latest firmware and configurations, as inconsistencies can also cause these errors. You might want to look into network settings or possibly reach out to Omron’s support for more specific troubleshooting related to the CLK 23 network. Good luck!

More Replies →

Streamline Your Asset Management
See How Oxmaint Works!!

✅   Work Order Management

✅   Asset Tracking

✅   Preventive Maintenance

✅   Inspection Report

We have received your information. We will share Schedule Demo details on your Mail Id.

To add a comment, please sign in or register if you haven't already..   

Frequently Asked Questions (FAQ)

FAQ: 1. What could be causing the "Note1 CLK network" error on the Omron CJ1W CLK 23 network controller?

Answer: - The "Note1 CLK network" error message could indicate issues with the communication network, such as network configuration errors, faulty network cables, or disruptions in the communication between the Omron PLCs.

FAQ: 2. How can I troubleshoot CLK net controller errors on Omron PLCs in a factory setting?

Answer: - To troubleshoot CLK net controller errors, you can start by checking the network configuration, verifying the connections between the Omron PLCs, ensuring proper grounding, and monitoring network traffic for any anomalies.

FAQ: 3. Is it possible to resolve the CLK network errors without disrupting production in the factory?

Answer: - It may be possible to resolve CLK network errors without disrupting production by conducting thorough troubleshooting during scheduled maintenance or downtime, implementing redundant communication paths for critical processes, and gradually updating network components to prevent future errors.

FAQ: 4. Are there common best practices for maintaining a reliable CLK 23 network with multiple Omron PLCs?

Answer: - Best practices for maintaining a reliable CLK 23 network with multiple Omron PLCs include regular network monitoring, ensuring proper network segmentation, implementing cybersecurity measures, providing adequate training for personnel, and following manufacturer recommendations for network setup and maintenance.

Ready to Simplify Maintenance?

Join hundreds of satisfied customers who have transformed their maintenance processes.
Sign up today and start optimizing your workflow.

Request Demo  â†’