# Rockwell Array OPC Tags

**URL:** <https://forum.inductiveautomation.com/t/rockwell-array-opc-tags/114421>\
**Category:** Ignition\
**Tags:** perspective\
**Created:** [March 10, 2026, 7:38pm UTC](https://forum.inductiveautomation.com/t/rockwell-array-opc-tags/114421 "2026-03-10T19:38:09Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![automator591](https://avatars.discourse-cdn.com/v4/letter/a/8baadc/32.png) [@automator591](https://forum.inductiveautomation.com/u/automator591)\
**Post date:** [March 10, 2026, 7:38pm UTC](https://forum.inductiveautomation.com/t/rockwell-array-opc-tags/114421/1 "2026-03-10T19:38:09Z")

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An existing system uses a 100-element array that is relatively static, though there are 12 of them to handle.  
My first question is: how do I create an OPC tag that reads the PLC tags?

My second question is: does it make sense to create memory arrays that get updated from the PLC on “occasion.?”

Of note, the arrays are string arrays, just to make it more interesting.

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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:** [March 10, 2026, 8:04pm UTC](https://forum.inductiveautomation.com/t/rockwell-array-opc-tags/114421/2 "2026-03-10T20:04:04Z")

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IA's Logix driver does not support reading/polling arrays as arrays. You need to address every element separately. If you don't need polling, you can set use a driven tag group, or script what you want with `system.opc.readValues()`.