# OPC Tags Case Sensitivity - AB ControlLogix

**URL:** <https://forum.inductiveautomation.com/t/opc-tags-case-sensitivity-ab-controllogix/14043>\
**Category:** Ignition\
**Created:** [April 13, 2017, 4:39pm UTC](https://forum.inductiveautomation.com/t/opc-tags-case-sensitivity-ab-controllogix/14043 "2017-04-13T16:39:16Z")\
**Posts on this page:** 1\
**Showing post:** 11

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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:** [February 6, 2023, 9:23pm UTC](https://forum.inductiveautomation.com/t/opc-tags-case-sensitivity-ab-controllogix/14043/11 "2023-02-06T21:23:21Z")

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My new alternate client driver is not case sensitive, fwiw:

> [@Automation Professionals' EtherNet/IP Communication Suite V2](https://forum.inductiveautomation.com/t/automation-professionals-ethernet-ip-communication-suite-v2/68190/27):
>
> New Beta is now available: v2.0.2.230360000 See comment below Regarding the list a few comments back: Aliases within AOIs work. Turns out that parameter aliases into local tags take on the external access of that local tags, but creating the alias in Studio 5000 automatically switches "None" to "Read Only" for that local tag. That means that many "sealed" AOIs that don't show any of their local tags (and cannot be fixed), do show them to my probe, and any local tags that have readable al…

You'll just have multiple nodes, different node IDs, pointing at the same PLC tag.

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