KEPServerEX All Tags on All Devices have Bad (Out of Service) Quality

[BD_10063928]

KEPServerEX 6.15.132.0

We have 8 Allen-Bradley Compact Logix 5300 PLCs connected on individual channels using the Allen-Bradley ControlLogix Ethernet driver via a wireless Moxa Gateway device. We also have 4 Siemens S7 PLCs that are configured, but are currently powered down and offline. These devices have been connected for almost a year and working without issue. This morning all of the tags on all of the connected devices began showing Bad (Out of Service) tag Quality. Nothing has changed on the KEPServerEX side that we are aware of. The KEPServerEX event log doesn't show any errors, just a few warnings where devices that are not online have been automatically demoted, and auto-promoted to determine if communications can be re-established.

We have restarted KEPServerEX and rebooted the Windows 2022 VM Server that KEPServerEX is installed on several. We can ping all of the connected devices and can Telnet into TCP/IP Port 44818 on all of the devices. We disabled all of the devices except one to see if it was possible a load/traffic issue. We just can't figure out what might have happened to take everything down at the same time like this. The network seems to be fine and nothing appears to be blocking the ports.

Any help or ideas would be greatly appreciated.

[rajskumar · Accepted solution]

Hello,

You may want to check the Kepware's Event Logs or Windows Logs from just before the issue occurred, as they might provide useful clues.

Alternatively, you can open a support ticket with the Kepware Technical Support team and submit the requested files. This will allow the support team to review the logs and assist you more effectively.

You can submit a ticket through the MyKepware portal here:
https://my.kepware.com/s/login/

Thank you!