Hello everyone, I am struggling with understanding how the FX-EEPROM-8 module functions with the FX2N PLC. I have a program already stored in the EEPROM-8 module and I am attempting to transfer it to the PLC memory. I had believed that the PLC would automatically save the EEPROM's content once the EEPROM was plugged in. Despite trying different methods, I have not been successful - whenever I unplug the EEPROM and check the PLC memory, it appears empty. While I am aware that I could save the program on my computer and then transfer it to the PLC, I am interested in learning how to have the PLC automatically save the EEPROM content, particularly in situations where a computer may not be accessible. Thank you.
An EEPROM is responsible for storing the application in a programmable logic controller (PLC). When a program is downloaded to the PLC with the EEPROM installed, it will be directed to the EEPROM. Conversely, if a program is downloaded to the PLC without an EEPROM, it will be stored in the PLC memory instead. This distinction is crucial for proper program execution and storage within the PLC system.
Hello trag, are you saying that you can only write to either the eeprom or plc rom? I have only used eeprom once before because the rom memory was insufficient. I believed that you could have two programs, one in the plc and one in the eeprom, but if the eeprom is installed, the program will always run from there.
I apologize for any confusion in my previous explanation. It is possible to have separate programs stored in the PLC and EEPROM. However, if you insert an EEPROM with an application into the PLC, the PLC will automatically run from that EEPROM. Typically, EEPROMs are used for program backups to keep the PLC memory clear. This practice helps prevent confusion in case the EEPROM is removed, as it would require ensuring that the versions match between the PLC ROM and EEPROM.
I understand now. I was under the impression that the EEPROM would automatically transfer to the PLC memory when inserted and switched on.
It is not possible to transfer the program directly from EEPROM to PLC in the usual way. However, you can utilize a small device to download it, specifically on FX0 series PLCs. By leaving a backup copy with the customer along with the device, they can easily reload the program in case their PLC malfunctions, all without the need for a computer. Does this feature align with what you were looking for?
Hi there! You're right in thinking the FX-EEPROM-8 module should automatically transfer the stored program to the FX2N PLC, but it's not as straightforward as just plugging it in. After you've attached the EEPROM, you need to cycle the power of the PLC unit to initiate the loading process from the EEPROM to the PLC's memory. Remember, the RUN/STOP switch must also be set to the RUN position. And one more thing, make sure that the battery in your PLC is in good condition, as a weak battery can prevent proper data transfer. Hope that's helpful!
Hi there, it seems like you've done quite a bit of troubleshooting already. One thing you might want to check is the parameters set on your PLC. The transfer between the EEPROM and the PLC usually doesn't happen automatically. Instead, you need to go through the steps to initiate this process. In situations where a computer is unavailable, the PLC needs to be set up properly to load the program from the EEPROM at startup. It's often a parameter setting encoded into the system address of the PLC. Try going through your PLC's manual to find the proper setup. I hope this gives you a bit of guidance on the matter. Good luck!
It sounds like you're dealing with a frustrating situation! With the FX2N and FX-EEPROM-8, the PLC typically needs to be configured to recognize the EEPROM on startup—often through specific settings in the programming environment. Make sure you're checking the necessary parameters to allow the PLC to read from the EEPROM on boot. Depending on your version, there might also be specific functions or commands you need to implement in your program to trigger the loading of data from the EEPROM into memory. Additionally, check that the EEPROM is properly formatted and compatible with the FX2N. If all else fails, consulting the manual or reaching out to community forums dedicated to Mitsubishi PLCs might offer some tailored advice. Good luck!
Hi there! It sounds like you're really diving into the nuances of the FX-EEPROM-8 with your FX2N PLC. Normally, the EEPROM should retain its content, but the PLC doesn't automatically save that content to its memory; you'll actually need to execute a specific command to transfer the EEPROM data to the PLC. Make sure you’re using the correct instructions—check your programming manual for the particular commands related to EEPROM uploads. Also, double-check the configuration settings and ensure that the EEPROM is properly recognized by the PLC. If you keep having issues, it might be worth checking if your module is functioning correctly or trying a different EEPROM if available. Good luck!
It sounds like you're facing a common issue with the FX-EEPROM-8 and the FX2N PLC! From my experience, the PLC doesn't automatically save the EEPROM data on its own; you actually need to execute a specific "load" instruction to transfer the contents to the PLC memory. Make sure you're following the right procedure to trigger that transfer. Also, check the settings on the PLC to ensure it’s configured to read from the EEPROM correctly upon startup. If you haven't already, consulting the manual for any nuances on EEPROM initialization and memory management with the FX2N could provide more clarity!
It sounds like you're running into a common issue with the FX-EEPROM-8 and FX2N PLC setup. The automatic saving of the EEPROM content usually requires you to explicitly execute a command to transfer the data from the EEPROM to the PLC’s memory. Make sure that your PLC is in the right mode to read from the EEPROM during startup. You might also want to check your manual for any specific settings or instructions about the memory transfer process, as sometimes additional configuration is necessary. If all else fails, consider reaching out to Mitsubishi support or a community forum for more targeted help, as they can provide insights based on their experience with similar issues. Good luck!
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Answer: - To transfer a program from the FX-EEPROM-8 module to the FX2N PLC, you can use programming software such as GX Developer. Connect the PLC to a computer, read the program from the EEPROM module, and then download it to the PLC.
Answer: - The PLC does not automatically save the content of the EEPROM module. You need to manually transfer the program using programming software to save it in the PLC memory.
Answer: - No, the PLC does not have a built-in function to automatically save the EEPROM content. You will need to use a computer and programming software to transfer the program from the EEPROM module to the PLC memory.
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