# AB Micro800 UPC-UA Server

**URL:** <https://forum.inductiveautomation.com/t/ab-micro800-upc-ua-server/117025>\
**Category:** Ignition\
**Tags:** ignition81\
**Created:** [September 9, 2026, 2:03am UTC](https://forum.inductiveautomation.com/t/ab-micro800-upc-ua-server/117025 "2026-09-09T02:03:57Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![jay](https://avatars.discourse-cdn.com/v4/letter/j/ed8c4c/32.png) [@jay](https://forum.inductiveautomation.com/u/jay)\
**Post date:** [September 9, 2026, 2:03am UTC](https://forum.inductiveautomation.com/t/ab-micro800-upc-ua-server/117025/1 "2026-09-09T02:03:57Z")

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The legacy Micro800 PLCs would only allow one tag per transaction. The newer E series Micro800s can bundle tags in a transaction like a CompactLogix. What is the status of Ignition's OPC-UA server wrt the E series?

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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:** [September 9, 2026, 3:16am UTC](https://forum.inductiveautomation.com/t/ab-micro800-upc-ua-server/117025/2 "2026-09-09T03:16:45Z")

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First I’ve heard of this. We’ll have to get one.

Can you point to documentation supporting this claim?

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**Author:** ![jay](https://avatars.discourse-cdn.com/v4/letter/j/ed8c4c/32.png) [@jay](https://forum.inductiveautomation.com/u/jay)\
**Post date:** [September 9, 2026, 3:37am UTC](https://forum.inductiveautomation.com/t/ab-micro800-upc-ua-server/117025/3 "2026-09-09T03:37:24Z")

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kind of... [Compare Selections](https://compatibility.rockwellautomation.com/Pages/MultiProductCompareSelections.aspx?crumb=113&versions=62968)

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/c/0/c0f1959abd1962cb02535e9ad0f943b7197876b1.png)

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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:** [September 9, 2026, 12:42pm UTC](https://forum.inductiveautomation.com/t/ab-micro800-upc-ua-server/117025/4 "2026-09-09T12:42:54Z")

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My driver will automatically used that service where available.