# TELECONTROL upgrade to 1.7.11 Error in 61850 Variables

**URL:** <https://www.wago.community/t/telecontrol-upgrade-to-1-7-11-error-in-61850-variables/2700>\
**Category:** CODESYS\
**Tags:** pfc200\
**Created:** [April 28, 2026, 1:59pm UTC](https://www.wago.community/t/telecontrol-upgrade-to-1-7-11-error-in-61850-variables/2700 "2026-04-28T13:59:06Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![elemen](https://avatars.discourse-cdn.com/v4/letter/e/57b2e6/32.png) [@elemen](https://www.wago.community/u/elemen)\
**Post date:** [April 28, 2026, 1:59pm UTC](https://www.wago.community/t/telecontrol-upgrade-to-1-7-11-error-in-61850-variables/2700/1 "2026-04-28T13:59:06Z")

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Hello !!!

Upgrading Codesys V3.5 SP19 Patch7 to v3.5 SP21 Patch5 and Telecontrol 1.6.9 to 1.7.11, we receive the error

Telecontrol: Error: A variable ‘BAY1CTRL\_LLN0\_CO\_Mod’ and a data point variable ‘BAY1CTRL\_LLN0\_CO\_Mod’ are created for the control object ‘BAY1CTRL/LLN0$CO$Mod’. Delete the control or data point variable!

Any suggestions?

KR,

Nikos

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**Author:** ![WagoIcard](https://sea2.discourse-cdn.com/flex016/user_avatar/www.wago.community/wagoicard/32/1508_2.png) [@WagoIcard](https://www.wago.community/u/WagoIcard)\
**Post date:** [May 7, 2026, 12:33am UTC](https://www.wago.community/t/telecontrol-upgrade-to-1-7-11-error-in-61850-variables/2700/2 "2026-05-07T00:33:51Z")

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Hello,  
I assume you also have updated the target, libraries and compiler/runtime ?

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<div class="post-metadata">

**Author:** ![elemen](https://avatars.discourse-cdn.com/v4/letter/e/57b2e6/32.png) [@elemen](https://www.wago.community/u/elemen)\
**Post date:** [May 7, 2026, 9:15am UTC](https://www.wago.community/t/telecontrol-upgrade-to-1-7-11-error-in-61850-variables/2700/3 "2026-05-07T09:15:30Z")

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Hello, we have installed all the Dependencies (WAGO\_Devices\_and\_Libraries\_2.0.9.2, WAGO\_Solution Builder\_Plugin\_2.4.2.0, FW31, etc.), but we receive errors from Control Variables in 61850

 ![image](https://us1.discourse-cdn.com/flex016/uploads/wago/original/2X/4/48c80f13f17dbc987392c5196b668550da7d9ebd.png)

PS: When we delete the affected DataPoints, the errors no longer occur.  
Therefore, we need to modify the program to maintain compatibility with the latest updates, as the behavior is no longer consistent as with version 1.6.9.0.

Thank u in Advance