Recently, our Rockwell control system was upgraded from ControlNet to Ethernet using the 1719-AENTR module. However, we have encountered issues with two AENTR devices freezing up in the past few months. Despite trying to reconfigure the PLC and clicking the display, there was no response, requiring us to power cycle the devices to resolve the issue. We are now exploring the possibility that upgrading the firmware may correct the problem and prevent it from recurring in the future. Additionally, we are investigating other potential causes for the device malfunctions. Is there a way to prevent this issue from happening again after the firmware update? What other troubleshooting steps should be taken to address these freezing incidents?
I have successfully installed around 80 to 100 of the 1719 devices. The only hiccup I've encountered is duplicate IP addresses. Despite that, they have all performed exceptionally well for us. Could it be possible that there was a duplicate address accidentally set up?
JeffKiper mentioned that he has successfully set up around 80 to 100 of the 1719 devices without any major issues, except for occasional problems with duplicate IP addresses. He questioned whether IP duplication could be the issue. However, the user clarified that there are no duplicated IP addresses in the installation site, even with over 30 devices previously installed and 30 new ones this year. The issues only seem to occur with the recently installed 1719 AENTR devices, which have experienced IP duplication twice in the past 4 months. The user is puzzled by this as they believe such issues should occur more frequently if IP duplication was the root cause. Corrections are welcome if any inaccuracies exist.
To optimize network performance, it is important to ensure that your connections are set to Auto-Negotiate. If they are set to half-duplex while trying to communicate full-duplex, this can lead to communication errors and dropped packets. To troubleshoot, check the communication page of the processors accessing the AENTRs for any flagged errors. In a similar situation with an older L35E, there were numerous packet collisions and dropped packets occurring. It is crucial to address these issues to maintain smooth communication and data transfer.
Though a firmware upgrade might resolve this issue, it's also worth examining whether there might be an issue with your network. Sometimes, the freezing can be due to high network traffic, communication delays, or even transmission errors on your Ethernet. A network analysis can give you a clear picture. The other potential cause could be electrical noise. In such environments, selecting shielded cabling and grounding both ends properly might help. Remember, just be thorough when investigating - these things tend to have multiple possible causes and it's often a process of elimination.
Yes, I agree that firmware update could solve your issue, however, it's crucial to identify the root cause to avoid future incidents. Remember that the AENTR modules are sensitive devices; network traffic, rate of I/O update or even a faulty Ethernet cable could trigger the freeze. Are you noticing any unusual activity or diagnostic errors on your PLC or your network? Check the Ethernet statistics and packets in your PLC. Overloading your Ethernet or network congestion could also be a potential reason. Moreover, double-check your power supply for correct voltage, brownouts could cause a freeze as well. Lastly, you might want to set up a watchdog timer to periodically reset the device if you can cope with short-time service downtime. This way, manual power cycling can be avoided.
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Answer: Answer: The freezing issues could be caused by various factors such as firmware compatibility issues, network configuration errors, or hardware malfunctions.
Answer: Answer: Upgrading the firmware is a common troubleshooting step to address device freezing issues and may help prevent recurrence in the future.
Answer: Answer: Ensuring proper firmware compatibility, following manufacturer guidelines for updates, and monitoring device performance post-update can help prevent freezing issues.
Answer: Answer: Other troubleshooting steps may include checking network settings, verifying power supply stability, inspecting physical connections, and consulting Rockwell's technical support for further assistance.
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