# Help me with opc!

**URL:** <https://forum.inductiveautomation.com/t/help-me-with-opc/108605>\
**Category:** Ignition\
**Tags:** opcua, perspective, ignition81\
**Created:** [July 17, 2025, 12:14pm UTC](https://forum.inductiveautomation.com/t/help-me-with-opc/108605 "2025-07-17T12:14:22Z")\
**Posts on this page:** 13\
**Page:** 1

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**Author:** ![Michele\_Infante](https://avatars.discourse-cdn.com/v4/letter/m/7ab992/32.png) [@Michele\_Infante](https://forum.inductiveautomation.com/u/Michele_Infante)\
**Post date:** [July 17, 2025, 12:14pm UTC](https://forum.inductiveautomation.com/t/help-me-with-opc/108605/1 "2025-07-17T12:14:22Z")

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I had an issue with this opc tag, this tag as u can see on the screen is the same identical tags with same address, can u explain me wy 1 is on good and the other in on bad\_notconnected?

 ![Screenshot 2025-07-17 122101](https://us1.discourse-cdn.com/inductiveautomation/original/3X/4/6/469662a5bb8b7e31c2d4d78e04b83ccb8ef721a8.png)

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**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [July 17, 2025, 12:28pm UTC](https://forum.inductiveautomation.com/t/help-me-with-opc/108605/2 "2025-07-17T12:28:28Z")

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Your screenshot cuts off too early - is the configured OPC Server the same for both tags?

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**Author:** ![Michele\_Infante](https://avatars.discourse-cdn.com/v4/letter/m/7ab992/32.png) [@Michele\_Infante](https://forum.inductiveautomation.com/u/Michele_Infante)\
**Post date:** [July 17, 2025, 12:32pm UTC](https://forum.inductiveautomation.com/t/help-me-with-opc/108605/3 "2025-07-17T12:32:27Z")

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Yeah is the same server!

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/3/a/3a5c64e101e0e744468bc4872ec4167200543f02.png)

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**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [July 17, 2025, 12:36pm UTC](https://forum.inductiveautomation.com/t/help-me-with-opc/108605/4 "2025-07-17T12:36:32Z")

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Did you create this tags by drag and drop?

Does it happen every time, for any tag from this server, when creating duplicates?

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**Author:** ![Transistor](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/transistor/32/3380_2.png) [@Transistor](https://forum.inductiveautomation.com/u/Transistor)\
**Post date:** [July 17, 2025, 12:41pm UTC](https://forum.inductiveautomation.com/t/help-me-with-opc/108605/5 "2025-07-17T12:41:03Z")

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Tip: resize the window before taking a screengrab. Yours is 95% whitespace with half a screen width between the label and the value making it hard to read. Reducing the window to 50% width would solve this.

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**Author:** ![Michele\_Infante](https://avatars.discourse-cdn.com/v4/letter/m/7ab992/32.png) [@Michele\_Infante](https://forum.inductiveautomation.com/u/Michele_Infante)\
**Post date:** [July 17, 2025, 1:22pm UTC](https://forum.inductiveautomation.com/t/help-me-with-opc/108605/6 "2025-07-17T13:22:48Z")

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You are right, sorry for the bad screenshot!

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/f/a/fa3cb67284b3339da45aa01aff8e838414ea77dc.png)

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<div class="post-metadata">

**Author:** ![Michele\_Infante](https://avatars.discourse-cdn.com/v4/letter/m/7ab992/32.png) [@Michele\_Infante](https://forum.inductiveautomation.com/u/Michele_Infante)\
**Post date:** [July 17, 2025, 1:23pm UTC](https://forum.inductiveautomation.com/t/help-me-with-opc/108605/7 "2025-07-17T13:23:36Z")

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Yeah every time i create a duplicates on this server

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<div class="post-metadata">

**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [July 17, 2025, 1:29pm UTC](https://forum.inductiveautomation.com/t/help-me-with-opc/108605/8 "2025-07-17T13:29:55Z")

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Sounds like a bug with the server then.

If you can get a Wireshark capture with security for the connection disabled we can verify that.

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**Author:** ![robertm](https://avatars.discourse-cdn.com/v4/letter/r/ea5d25/32.png) [@robertm](https://forum.inductiveautomation.com/u/robertm)\
**Post date:** [July 17, 2025, 1:49pm UTC](https://forum.inductiveautomation.com/t/help-me-with-opc/108605/9 "2025-07-17T13:49:20Z")

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Judging from the timestamps are we even sure the original tag is good? Its last timestamp was a year ago.

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**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [July 17, 2025, 2:36pm UTC](https://forum.inductiveautomation.com/t/help-me-with-opc/108605/10 "2025-07-17T14:36:09Z")

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I noticed that, my assumption is that the OPC server's clock is not set correctly. Since it's an OPC tag we're using the timestamp provided by the server.

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<div class="post-metadata">

**Author:** ![Michele\_Infante](https://avatars.discourse-cdn.com/v4/letter/m/7ab992/32.png) [@Michele\_Infante](https://forum.inductiveautomation.com/u/Michele_Infante)\
**Post date:** [July 17, 2025, 2:56pm UTC](https://forum.inductiveautomation.com/t/help-me-with-opc/108605/11 "2025-07-17T14:56:17Z")

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I didn’t set up NTP on this PLC. However, after some testing, I discovered that if I change the value after copying the tag, it works. But if the tag value doesn’t change, the copy remains in a bad state.

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<div class="post-metadata">

**Author:** ![Michele\_Infante](https://avatars.discourse-cdn.com/v4/letter/m/7ab992/32.png) [@Michele\_Infante](https://forum.inductiveautomation.com/u/Michele_Infante)\
**Post date:** [July 17, 2025, 2:56pm UTC](https://forum.inductiveautomation.com/t/help-me-with-opc/108605/12 "2025-07-17T14:56:41Z")

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Can't wireshark

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<div class="post-metadata">

**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [July 17, 2025, 3:45pm UTC](https://forum.inductiveautomation.com/t/help-me-with-opc/108605/13 "2025-07-17T15:45:41Z")

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Well, you could turn on the logger for `DataValueConsumer` to TRACE level and probably see the initial null/Bad\_NotConnected come in, and then watch, uh... the absence of values arriving. But it's a little less compelling than something objective like a Wireshark capture when you have to go report a bug.

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/0/e/0e78785ad72536af9670592ad6dc2f22321f3b81.png)
