Hello, I recently integrated two 1783-NATR devices into a pair of our machines. Both machines are equipped with 1769-L24ER-QFC1B CompactLogix controllers, and while one functions flawlessly, the other is experiencing a recurring issue. Upon power cycling, the PLC in the problematic machine resets its gateway IP to 0.0.0.0. Consequently, I find myself manually adjusting the gateway IP each time this occurs, which is happening frequently enough to be a concern. Strangely, the other machine does not encounter this issue. Could this be a peculiar hardware glitch, or is there a solution that can address this issue proactively? Any guidance on this matter would be greatly valued. Thank you.
Is your BOOTP/DHCP feature turned off?
It has been a considerable amount of time since I last engaged in more complex tasks beyond basic edits and problem-solving. However, this issue seems vaguely familiar. Does your Programmable Logic Controller (PLC) contain an SD card? If it does, an unconventional solution that worked for me in a similar situation was to first adjust the communication settings and then back up the data on the SD card. It may sound illogical, but this method resolved a similar issue I encountered years ago while starting up a project. Hopefully, implementing this workaround will prove beneficial for you as well.
Could you provide the IP setup for the PLC as well as the NAT configuration for public and private IP addresses used?
User imtiredboss suggested a possible solution to the issue of fixing communication settings and performing a backup on a PLC with an SD card. Despite the unusual approach, it successfully resolved a similar problem in the past. Upon reviewing the controller properties, it appears there may be an SD card present. Further investigation will be conducted tomorrow. Thank you for the advice!
Hi, it does seem peculiar that the issue is only occurring on one of your machines despite using identical components. Since one of the PLCs is functioning as intended, I'd first rule out it being a programming issue. It might be a hardware problem, perhaps some minor manufacturing defect in that specific controller. However, before assuming that, remember to check if the problematic PLC has the latest firmware update; sometimes these types of issues can arise from outdated firmware. Alternatively, you could try a factory reset before reconfiguring its settings. If all else fails, get in touch with the manufacturer's customer support.
Interesting issue you're facing there. Given that one machine is working perfectly fine with the same setup, it may not be a hardware problem, but rather, it might have something to do with the software configuration. I would recommend checking the firmware version of the PLC first and making sure they're the same. If the firmware version does check out, you could try backing up the configuration from the functioning machine and restore into the problematic one. Remember to save the current configuration before trying this so you have a backup. If none of these suggested steps resolve the issue, it could be indicative of an underlying hardware fault, although that would be peculiar given the similar setup in both machines.
It sounds like you've got a puzzling issue on your hands! It could indeed be a hardware glitch as you mentioned, but before jumping to conclusions, you might want to consider a couple of things. First, you could compare the firmware versions on both the 1783-NATR devices and the CompactLogix controllers in your machines to see if there are any discrepancies in the versions. A firmware discrepancy might cause inconsistent behaviors between the two machines. Also, check whether the confusing machine is maintaining its other settings correctly upon reboot. If not, it might be an issue with the PLC's backup battery. Lastly, you could try resetting the PLC to factory configuration to see if the issue persists. Don’t forget to backup before doing so!
It sounds frustrating to deal with that issue! Since one machine is working fine, it might be worth checking the firmware versions of both machines to ensure they're identical, as a mismatch could cause communication issues. Also, have you verified the wiring and power supply to the problematic device? Sometimes, something as simple as a loose connection can lead to unexpected behavior. If everything checks out, you might want to explore the possibility of setting the IP configuration in the PLC program itself or reaching out to Rockwell’s support for a deeper dive—they might have encountered this before. Good luck!
It sounds like frustrating issue! Have you checked if both systems have the same firmware version for the 1783-NATR devices? Sometimes, discrepancies in firmware can lead to unexpected behaviors. Additionally, consider examining the configuration settings on both machines to ensure they’re identical—there might be a setting that affects the gateway IP retention. If everything seems aligned, it could be a hardware glitch, so perhaps swapping out the problematic device with the one that's working well could help narrow it down. Let us know what you find out!
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Answer: Answer: The issue of the gateway IP resetting to 0.0.0.0 could be due to a hardware glitch or a configuration setting that needs adjustment.
Answer: Answer: To address the recurring issue of the gateway IP resetting, you may need to investigate the configuration settings, firmware updates, or potential hardware issues affecting the specific machine.
Answer: Answer: Troubleshooting steps could include checking the network configuration, verifying the integrity of the NATR devices, and ensuring compatibility and proper setup of the equipment.
Answer: Answer: The discrepancy in behavior between the two machines could indicate a specific configuration or hardware difference that is causing the gateway IP reset problem on one machine. Identifying and addressing this discrepancy is key to resolving the issue.
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