# Write time to third party opc server

**URL:** <https://forum.inductiveautomation.com/t/write-time-to-third-party-opc-server/86767>\
**Category:** Ignition\
**Created:** [March 4, 2024, 3:30pm UTC](https://forum.inductiveautomation.com/t/write-time-to-third-party-opc-server/86767 "2024-03-04T15:30:00Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![erik.forsgren](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/erik.forsgren/32/14156_2.png) [@erik.forsgren](https://forum.inductiveautomation.com/u/erik.forsgren)\
**Post date:** [March 4, 2024, 3:30pm UTC](https://forum.inductiveautomation.com/t/write-time-to-third-party-opc-server/86767/1 "2024-03-04T15:30:00Z")

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Hi!  
I have a question regarding writing tags to third-party opc server like Kepserver, ABB 800xA and similar.

I have script that does a system.tag.writeblocking call with 89 tags in the list. The function call returns after about 90-100s, over a second for each tag. Is this normal behaviour or do I have an issue in my setup?

/Erik

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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:** [March 4, 2024, 3:31pm UTC](https://forum.inductiveautomation.com/t/write-time-to-third-party-opc-server/86767/2 "2024-03-04T15:31:51Z")

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What version are you on? At some point a performance regression writing to OPC tags via `system.tag.writeBlocking` was introduced, and it has since been fixed.

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<div class="post-metadata">

**Author:** ![erik.forsgren](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/erik.forsgren/32/14156_2.png) [@erik.forsgren](https://forum.inductiveautomation.com/u/erik.forsgren)\
**Post date:** [March 4, 2024, 4:46pm UTC](https://forum.inductiveautomation.com/t/write-time-to-third-party-opc-server/86767/3 "2024-03-04T16:46:10Z")

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8.1.35

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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:** [March 4, 2024, 4:57pm UTC](https://forum.inductiveautomation.com/t/write-time-to-third-party-opc-server/86767/4 "2024-03-04T16:57:56Z")

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Yeah, that's one of the affected versions. Upgrade and see if your issues persists.

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<div class="post-metadata">

**Author:** ![erik.forsgren](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/erik.forsgren/32/14156_2.png) [@erik.forsgren](https://forum.inductiveautomation.com/u/erik.forsgren)\
**Post date:** [March 5, 2024, 6:50pm UTC](https://forum.inductiveautomation.com/t/write-time-to-third-party-opc-server/86767/5 "2024-03-05T18:50:53Z")

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Thanks Kevin, an upgrade to 8.1.37 worked.  
Now the write was done in 424ms

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**Author:** ![lrose](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/lrose/32/62724_2.png) [@lrose](https://forum.inductiveautomation.com/u/lrose)\
**Post date:** [March 5, 2024, 6:52pm UTC](https://forum.inductiveautomation.com/t/write-time-to-third-party-opc-server/86767/6 "2024-03-05T18:52:11Z")

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Do you know what version the regression was introduced?

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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:** [March 5, 2024, 6:52pm UTC](https://forum.inductiveautomation.com/t/write-time-to-third-party-opc-server/86767/7 "2024-03-05T18:52:30Z")

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It was present in 8.1.34 and 8.1.35.