I have a client who purchased a pre-owned machine with a C200HS Omron CPU31 and a NT21. Upon connecting the cable, an error appeared on the HMI. Despite trying a new cable and attempting to upload the program from the PLC with a cable purchased from me, they are unable to establish a connection. Could the dip switches on the PLC be incorrectly configured? The client is utilizing trial software from Omron. Is there a method to access the COM settings on the HMI? Kindly refer to the attached images for error details. Any assistance is greatly appreciated.
To access the installer mode on the NT, refer to page 118 of the manualV068-E1-01. This section provides a detailed explanation of how to enter the installer mode and set up communications for the device in maintenance mode.
It is possible that Dip Switch 5 switches between default and programmed settings when turned on or off. In order to access the menu, you should be able to hold down opposite corners on the screen. Turning Dip Switch 5 on should allow connection with CX Programmer using the Host Link (Sysmac Way) network type. Ensure to check how Port A on the NT is configured. The appropriate cable to use would be USB-CIF02 to connect USB to the peripheral port, or C200HS-CN220-EU (USB-GTC99CC) to connect to the 9-pin port on the CPU and the NT21 device.
Thank you both so much for your help. I have shared the information with him in hopes that it will address and resolve his problems effectively.
Great news! One of my customers shared their success story after receiving assistance from me. They were able to successfully connect and configure a port by utilizing information from the forum, specifically dip switch 5 and referencing the NT21 manual. This guidance led them to the Maintenance screen for configuration. Thank you for the positive feedback! It's always rewarding to hear that the assistance provided was helpful. Click for more details.
It sounds like you're facing a frustrating issue! First, definitely double-check the dip switch settings on the CPU; they can often be the culprit in communication problems. As for the NT21 HMI, accessing the COM settings is usually done via the system menu. You may need to hold down the “Shift” and “F1” keys simultaneously to enter this menu, and from there, you can configure the communication parameters. Also, ensure the baud rate and communication protocol match between the PLC and HMI. If all else fails, consider reaching out to Omron support, as they might have specific tips for your trial software. Good luck!
It sounds like a challenging situation! First off, definitely check those dip switches on the PLC; sometimes they can be set incorrectly, which would prevent proper communication. Make sure they match the configuration required for the NT21 HMI connection. As for accessing the COM settings on the HMI, typically you can do this from the HMI's configuration menu, but the exact method can vary based on the software version. Since you're using trial software, some features might be limited; however, it’s still worth exploring the settings. If the issue persists, consider checking if the HMI is set to the right protocol for the C200HS. Keep me posted on what you find!
✅ Work Order Management
✅ Asset Tracking
✅ Preventive Maintenance
✅ Inspection Report
We have received your information. We will share Schedule Demo details on your Mail Id.
Answer: Answer: Yes, misconfigured dip switches on the CPU31 could potentially cause connection errors with the NT21 HMI. It is important to ensure that the dip switches are set correctly for proper communication.
Answer: Answer: Yes, it is possible to access the COM settings on the NT21 HMI to troubleshoot connection issues. By checking and adjusting the COM settings, you may be able to establish a successful connection with the PLC.
Answer: Answer: If using a new cable and different software does not resolve the connection issues, it is recommended to double-check the dip switch settings, verify the COM settings on the HMI, and ensure compatibility between the devices and software being used. You may also consider consulting Omron's technical support for further assistance.
Join hundreds of satisfied customers who have transformed their maintenance processes.
Sign up today and start optimizing your workflow.