# Tag value show bad

**URL:** <https://forum.inductiveautomation.com/t/tag-value-show-bad/92648>\
**Category:** Ignition\
**Created:** [July 1, 2024, 7:23pm UTC](https://forum.inductiveautomation.com/t/tag-value-show-bad/92648 "2024-07-01T19:23:55Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Zaw\_Lin](https://avatars.discourse-cdn.com/v4/letter/z/f07891/32.png) [@Zaw\_Lin](https://forum.inductiveautomation.com/u/Zaw_Lin)\
**Post date:** [July 1, 2024, 7:23pm UTC](https://forum.inductiveautomation.com/t/tag-value-show-bad/92648/1 "2024-07-01T19:23:55Z")

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Bad("Bad\_NotConnected: The variable should receive its value from another variable.")  
error .How can I solve it? Currently I am testing my DVP16ES2 plc with ignition opc ua server.The device is connected.But I cannot create any tags.I use the Delta DVP series plc modbus addresses.

 ![scadaerror](https://us1.discourse-cdn.com/inductiveautomation/original/3X/5/1/51f1baecb471151e0819735b9c5487c6e0a03bc6.png)  
 ![scadaerror0](https://us1.discourse-cdn.com/inductiveautomation/original/3X/5/f/5f6374473848a55effb2901868e323cfa2b46b36.png)

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**Author:** ![Bushmatic](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/bushmatic/32/87014_2.png) [@Bushmatic](https://forum.inductiveautomation.com/u/Bushmatic)\
**Post date:** [July 1, 2024, 8:38pm UTC](https://forum.inductiveautomation.com/t/tag-value-show-bad/92648/3 "2024-07-01T20:38:52Z")

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Go to View -\> Panels -\> OPC Browser. Then, find this device in the Ignition OPC-UA Server -\> Devices. Are you able to see the tag(s) in there?

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**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [July 1, 2024, 9:01pm UTC](https://forum.inductiveautomation.com/t/tag-value-show-bad/92648/4 "2024-07-01T21:01:46Z")

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> [@Bushmatic](#):
>
> OPC Browser

IA's modbus driver only shows items from the mapping table in the OPC Browser. If the mappings are broken, the display tags will be broken as well.

Test with actual tags with manual addressing.

(Or use my alternate driver, with does show possible non-mapped addresses in both OPC browser and in the web quick client.)

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<div class="post-metadata">

**Author:** ![Zaw\_Lin](https://avatars.discourse-cdn.com/v4/letter/z/f07891/32.png) [@Zaw\_Lin](https://forum.inductiveautomation.com/u/Zaw_Lin)\
**Post date:** [July 2, 2024, 6:50am UTC](https://forum.inductiveautomation.com/t/tag-value-show-bad/92648/5 "2024-07-02T06:50:19Z")

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Yeah .I can see tags in there.

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<div class="post-metadata">

**Author:** ![Zaw\_Lin](https://avatars.discourse-cdn.com/v4/letter/z/f07891/32.png) [@Zaw\_Lin](https://forum.inductiveautomation.com/u/Zaw_Lin)\
**Post date:** [July 2, 2024, 6:57am UTC](https://forum.inductiveautomation.com/t/tag-value-show-bad/92648/6 "2024-07-02T06:57:30Z")

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Now it shows access level does not allow writing to this node.

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<div class="post-metadata">

**Author:** ![pascal.fragnoud](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pascal.fragnoud/32/24728_2.png) [@pascal.fragnoud](https://forum.inductiveautomation.com/u/pascal.fragnoud)\
**Post date:** [July 2, 2024, 9:13am UTC](https://forum.inductiveautomation.com/t/tag-value-show-bad/92648/7 "2024-07-02T09:13:24Z")

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The first screenshot makes me think that you're doing something wrong somewhere.  
Can you show us what raises that error ?