Greetings, knowledgeable experts! Our GE PLC Series 90-30, which is more than 20 years old, has suddenly stopped running. The run LED is off and the battery LED is not illuminated. The HMI is displaying an error message stating that the "PLC has lost a card." Unfortunately, we do not have the software (Logicmaster 90) to address this issue. Can you provide guidance on how to clear the fault table of the PLC? Thank you!
Losing an I/O module typically isn't a critical issue, so there may be other factors at play. Do you know what HMI system you're using? Some editions of GE's Cimplicity HMI software allow you to reset the fault table. If your CPU has a keyswitch and is set to run/stop mode, you might be able to restart it unless the fault is severe. Otherwise, you'll need the programming software to reset the fault table. The entry in the fault table is crucial for diagnosing the root cause of the stoppage.
If an I/O module fails, it is not necessarily a critical issue and there may be other factors at play. Are you using GE's Cimplicity HMI software? Certain versions of this software have the capability to clear fault tables. If your CPU has a keyswitch for run/stop functions, you may be able to use it to restart, unless the fault is severe. If not, you will need programming software to clear the fault table. The fault entry in the table can help troubleshoot the root cause of the issue. We encountered a situation where the top latch of an output card was broken, so we secured it with tape. It is possible that the tape came loose, leading to communication issues with the output card. Attempting to clear the fault using the key switch was unsuccessful, and there is no option on the HMI to clear the fault. The solution may lie in using logicmaster 90 software to resolve the fault. Thank you for your assistance.
If you're in need of Logicmaster software, please message me your email. I have the program stored on my Google Drive and can add you to the sharing list. Please note that Logicmaster requires a 32-bit operating system to run properly, as the serial port driver is incompatible with 64-bit systems.
Steve has sent me the LM90 software, and I understand that I need to install it on a virtual machine (VM) running a 32-bit operating system. Which VM would be most suitable for this purpose? The GE PLC being used utilizes the SNP port on the power supply and port 2 on the CPU351, leaving only port 1 RS232 (RJ11) open. I have come across a cable with an FDTI chip, and you can find it here: [link]. Can someone confirm if this cable is the correct one to use? Thank you!
I operate Logicmaster through DOSBox on a 32-bit Windows XP virtual machine using VMWare. The cable provided seems compatible and should work effectively.
Turn off the power, remove all the modules and connectors, and reseat them appropriately. If you physically examine the rack and it appears well-seated, and you're confident modules haven't been tampered with, it's more likely to be a date/time, memory retention, or possibly a power loss issue. Also, consider checking the programming port/cable, as a fast blinking RUN LED can suggest an issue with the program loading. Please consider connecting with GE support or getting a control systems engineer for further assistance if a simple reset doesn't work.
Hey there! Since you're missing the Logicmaster 90 software, troubleshooting the PLC 90-30 is going to be a bit tricky. However, you could take a crack at manually clearing the fault table from the PLC itself. Here's what you can do: Push the OK button once to the fault table; all the faults are displayed here. You can clear a fault by pushing the UP/DOWN and LEFT/RIGHT buttons. Please be aware this won't fix the actual problem but it will remove the fault from the table. The issue with the "card lost" error message might suggest a failed module which will need to be replaced. If the PLC is that old it might be a good idea to start considering an upgrade as well. Let me know if this helps!
Hello there! It indeed sounds like you have a hardware error causing the PLC to stop functioning. Unfortunately, without Logicmaster 90 software, debugging could be a significant challenge since it's necessary to view and clear the fault table. However, you can try performing a general reset by turning off the power, waiting for about 30 seconds, and then turning the power back on. If the error persists, you might need to inspect the physical condition of your I/O cards for any obvious signs of damage. If you find any issues, replacement might be the best bet since visits from GE technicians or purchasing the relevant software could be costlier, given the PLC's age. Moving forward, you might want to consider upgrading your system since support for such legacy hardware becomes progressively difficult. Good luck with your troubleshooting!
Hey there! It sounds like you're dealing with a bit of a tricky situation with the GE PLC. Since the Logicmaster 90 software is essential for troubleshooting, if you can’t access it, I recommend reaching out to a colleague or a third-party service that has the needed software. In the meantime, try powering down the PLC and then turning it back on to see if that clears the run state. If it still doesn't help, confirming all card connections and reseating them might resolve the "lost card" error. Good luck, and I hope you get it running smoothly again!
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Answer: 1. Why is my GE PLC Series 90-30 displaying an error message about losing a card and how do I address this issue? - The error message indicating that the "PLC has lost a card" can occur due to various reasons, such as a loose connection or a faulty card. To address this issue, you may need to check and ensure all cards are properly seated and functioning correctly.
Answer: - Unfortunately, clearing the fault table on a GE PLC Series 90-30 typically requires using the Logicmaster 90 software. Without access to the software, it may be challenging to clear the fault table directly from the PLC.
Answer: - If the run LED is off and the battery LED is not illuminated on your GE PLC Series 90-30, it could indicate a power issue or a potential hardware failure. You may need to check the power supply, connections, and the status of the battery to troubleshoot and resolve the problem.
Answer: - While it may be possible to reset the GE PLC Series 90-30 to clear faults without the Logicmaster 90 software,
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