Hello everyone, I am currently facing a problem with upgrading my Mitsubishi PLC from Q02 to Q03UDVCPU. I have successfully written the program for the Q03UDVCPU, but I am encountering issues with connecting other modules such as I/O to the main PLC unit. Should I replace the entire set of CPU and I/O modules? The existing setup has been in use since 2009 and was programmed using GX Developer, but I am now using GX Work 2 to open the program. If anyone has a solution, please share it with me. Thank you.
Are the PLC parameters uploaded? This includes I/O slot addressing and other important parameters such as latch areas. Do you have the original source file as well? It is crucial to ensure there are no conflicts, especially if there is an outdated I/O module. I recommend double-checking that the Q02 version of the project includes the PLC parameter with the I/O configuration. It is common practice to upload this information from the PLC itself.
In the image provided, I made the decision to change the PLC type from Q02H to Q03UDVCPU in an existing project. Now, I am wondering how to assign modules to this new PLC configuration.
Are you referring to assigning modules by specifying the Start addresses? When adding cards manually, you have the option to select the type of card and enable automatic XY assignment with a checkbox. This should already be set if the PLC Parameters match those of the PLC.
Thank you for your assistance. I made an error in selecting the CPU model, which should have been Q03UDCPU. I have since made the necessary changes to the PLC type in the project file. Upon verifying both programs, discrepancies were discovered. These include mismatched PLC network settings, timer limit settings, service processing settings, floating point arithmetic processing settings, file register settings, device indexing settings, latch settings, RAS settings, I/O assignment settings, and header information in various parameter blocks (Block No. 0407, 0409, 1000, 1004, 1013, 1104, 2000, 2005, 3001, 3006). These discrepancies must be addressed for proper functionality.
To investigate the differences between the PLC Parameter files of the original Q02 and upgraded PLC settings, it is important to compare the settings side by side. The file register in PLC parameters is typically an extension of "R" registers, which may have been reset to a default size when the PLC type was changed. This could affect the program's compatibility with the new processor. It is crucial to consider factors such as the file register size and latch settings when transitioning from Q02 to Q03 PLC. While the floating point arithmetic setting cannot be adjusted in Q03, it is unlikely to impact the program unless it uses 64-bit floats. The primary discrepancy between Q02 and Q03 seems to be the mismatch in PLC parameters, with potential differences in parameter blocks and I/O settings.
Before going ahead with a full replacement of your CPU and I/O modules, it might be worth trying some troubleshooting techniques first. Check if your I/O modules are compatible with the Q03UDVCPU. Also, ensure all module settings and wiring are done correctly according to the manuals. You also need to confirm if you've successfully imported and converted the old GX Developer program into your new one (GX Work 2) as there might be some missing configuration or compatibility issues. Remember to back up your program before making changes. If you've done all these without success, a complete upgrade might be necessary then. Although, I'd recommend consulting with a Mitsubishi specialist directly to get professional advice before making such a substantial change.
Hey there! Upgrading can definitely be tricky, especially when dealing with legacy systems. Instead of replacing everything, check if the I/O modules you're using are compatible with the Q03UDVCPU. Sometimes a firmware update or a simple reconfiguration can solve communication issues. Also, ensure you've set the proper communication settings in GX Works 2, as it’s quite different from GX Developer. If compatibility issues persist, you might need specific bridging modules or to consider newer I/O options that work seamlessly with the upgraded CPU. Good luck!
It sounds like you’re doing a great job transitioning to the Q03UDVCPU! Instead of replacing the entire setup, you might want to check if the existing I/O modules are compatible with the new CPU first. Sometimes, just updating the firmware or reconfiguring the existing modules can solve connection issues. Also, ensure that the settings in GX Works 2 match the specifications of the new CPU and I/O modules. If you’re still having trouble, you might consider reaching out to Mitsubishi support for specific compatibility questions or checking any available resources on their website. Good luck!
Hey there! It sounds like you're dealing with a pretty significant upgrade. If the I/O modules are compatible with the Q03UDVCPU, you might not need to replace everything—just check the compatibility lists to confirm. Also, make sure you’re using the right settings in GX Works 2, as some configurations might differ from GX Developer. Sometimes issues arise from firmware mismatches or communication settings not being configured properly, so double-check those as well. Good luck!
✅ 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: 1. Q: I am upgrading my Mitsubishi PLC from Q02 to Q03UDVCPU and facing connection issues with I/O modules. Should I replace the entire set of CPU and I/O modules? It may not be necessary to replace the entire set of CPU and I/O modules. Troubleshooting the connection issues with the existing modules could help resolve the problem.
Answer: Yes, you can use GX Work 2 to open programs that were created using GX Developer. However, compatibility issues may arise, so it's important to verify the compatibility and settings.
Answer: To resolve connection issues, you may need to check the wiring, settings, and compatibility between the Q03UDVCPU and the I/O modules. It's recommended to consult the PLC documentation and seek assistance from Mitsubishi technical support if needed.
Join hundreds of satisfied customers who have transformed their maintenance processes.
Sign up today and start optimizing your workflow.