# Diagnostic Tags

**URL:** <https://forum.inductiveautomation.com/t/diagnostic-tags/21607>\
**Category:** Ignition\
**Created:** [December 27, 2018, 8:19pm UTC](https://forum.inductiveautomation.com/t/diagnostic-tags/21607 "2018-12-27T20:19:38Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![christopher.panici](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/christopher.panici/32/5814_2.png) [@christopher.panici](https://forum.inductiveautomation.com/u/christopher.panici)\
**Post date:** [December 27, 2018, 8:19pm UTC](https://forum.inductiveautomation.com/t/diagnostic-tags/21607/1 "2018-12-27T20:19:38Z")

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Hello, I have a 5069-L320ER. I am trying to monitor the connection state of the PLC using the diagnostic tags on the OPC server. When I add the tag, it connects, but then shortly after it goes to “bad quality”. Is this a known issue for this type of PLC? I am using the standard out of the box Logix Driver. Also, I do know that when my tag says bad quality my plc remains connected.

Any help is appreciated.

Chris

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**Author:** ![witman](https://avatars.discourse-cdn.com/v4/letter/w/d2c977/32.png) [@witman](https://forum.inductiveautomation.com/u/witman)\
**Post date:** [December 28, 2018, 12:55am UTC](https://forum.inductiveautomation.com/t/diagnostic-tags/21607/2 "2018-12-28T00:55:56Z")

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Sounds like the same issue discussed here:

> [@\[BUG-9371\] Allen-Bradley Logix Driver - Diagnostic Tags Bad Quality?](http://forum.inductiveautomation.com/t/allen-bradley-diagnostic-tags-bad-quality/18669):
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> Hey folks, We’ve got several L306-ER (v30) devices running on the AB Logix driver and they have been for ~a year. Yesterday I pulled the [Diagnostics] folder for each device into a tags folder and today when I came back, they are all Bad Quality. Pulling the folder out of the OPC-UA server and dropping them into the tags window will refresh the data and they will go good quality again. I expect that given time, they will return to bad quality? The other tags I am polling from these devices do…

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**Author:** ![AIO](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/aio/32/87549_2.png) [@AIO](https://forum.inductiveautomation.com/u/AIO)\
**Post date:** [December 28, 2018, 1:41am UTC](https://forum.inductiveautomation.com/t/diagnostic-tags/21607/3 "2018-12-28T01:41:37Z")

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Support told me it’s a known issue.