# SCADA/PLC comparison

**URL:** <https://forum.inductiveautomation.com/t/scada-plc-comparison/44606>\
**Category:** Ignition\
**Created:** [March 18, 2021, 12:18am UTC](https://forum.inductiveautomation.com/t/scada-plc-comparison/44606 "2021-03-18T00:18:43Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![keil](https://avatars.discourse-cdn.com/v4/letter/k/cab0a1/32.png) [@keil](https://forum.inductiveautomation.com/u/keil)\
**Post date:** [March 18, 2021, 12:18am UTC](https://forum.inductiveautomation.com/t/scada-plc-comparison/44606/1 "2021-03-18T00:18:43Z")

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I am wondering if there exists a tool to compare the tags in the tag browser with the tags that are currently active in my device connections - I have various PLCs connected to this project and the site engineer changes tags frequently meaning that there are tags present in my folders that no longer exist.

I am hoping to quickly find out which tags actually exist in the devices so that I can clean up my tag browser and de-bug my project.

Please note that this project is a Perspective project.

Thanks!

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**Author:** ![Matrix\_Engineering](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/matrix_engineering/32/19781_2.png) [@Matrix\_Engineering](https://forum.inductiveautomation.com/u/Matrix_Engineering)\
**Post date:** [March 18, 2021, 12:41am UTC](https://forum.inductiveautomation.com/t/scada-plc-comparison/44606/2 "2021-03-18T00:41:34Z")

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Listing which PLCs you are using would vary our answer, but regardless there is no built in compare tool, you’d need to script one.

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**Author:** ![nminchin](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/nminchin/32/6911_2.png) [@nminchin](https://forum.inductiveautomation.com/u/nminchin)\
**Post date:** [March 18, 2021, 3:04am UTC](https://forum.inductiveautomation.com/t/scada-plc-comparison/44606/3 "2021-03-18T03:04:56Z")

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Could you just read all tags in your project and check their qualities and filter on those with bad qualities?

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**Author:** ![keil](https://avatars.discourse-cdn.com/v4/letter/k/cab0a1/32.png) [@keil](https://forum.inductiveautomation.com/u/keil)\
**Post date:** [March 22, 2021, 10:46pm UTC](https://forum.inductiveautomation.com/t/scada-plc-comparison/44606/4 "2021-03-22T22:46:24Z")

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Thanks for your advice.

Seems like this would be a great starting point.