# OPC UA connectivity

**URL:** <https://forum.inductiveautomation.com/t/opc-ua-connectivity/64998>\
**Category:** Ignition\
**Tags:** ignition81\
**Created:** [October 10, 2022, 6:58am UTC](https://forum.inductiveautomation.com/t/opc-ua-connectivity/64998 "2022-10-10T06:58:03Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![R\_P](https://avatars.discourse-cdn.com/v4/letter/r/aca169/32.png) [@R\_P](https://forum.inductiveautomation.com/u/R_P)\
**Post date:** [October 10, 2022, 6:58am UTC](https://forum.inductiveautomation.com/t/opc-ua-connectivity/64998/1 "2022-10-10T06:58:03Z")

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Hi All,  
I am working on already created gateway backup. That gateway backup has OPC UA connectivity to PLC. I dnt have PLC with me now so i am not able to check backup with full functional as tags are offline. Is there any way to check backup with offline OPC UA connection.?

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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:** [October 10, 2022, 11:45am UTC](https://forum.inductiveautomation.com/t/opc-ua-connectivity/64998/2 "2022-10-10T11:45:07Z")

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No, you have to set up simulations when offline. What kind of PLC?

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<div class="post-metadata">

**Author:** ![R\_P](https://avatars.discourse-cdn.com/v4/letter/r/aca169/32.png) [@R\_P](https://forum.inductiveautomation.com/u/R_P)\
**Post date:** [October 10, 2022, 11:53am UTC](https://forum.inductiveautomation.com/t/opc-ua-connectivity/64998/3 "2022-10-10T11:53:03Z")

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Thanks,  
Siemens:S7-1500

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**Author:** ![jeremy.lecoutre](https://avatars.discourse-cdn.com/v4/letter/j/3e96dc/32.png) [@jeremy.lecoutre](https://forum.inductiveautomation.com/u/jeremy.lecoutre)\
**Post date:** [October 10, 2022, 11:53am UTC](https://forum.inductiveautomation.com/t/opc-ua-connectivity/64998/4 "2022-10-10T11:53:28Z")

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For quick test of UI, you can also manualy change your opc tags to memorie tags. Don't forget to backup original tags before.

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<div class="post-metadata">

**Author:** ![R\_P](https://avatars.discourse-cdn.com/v4/letter/r/aca169/32.png) [@R\_P](https://forum.inductiveautomation.com/u/R_P)\
**Post date:** [October 10, 2022, 11:54am UTC](https://forum.inductiveautomation.com/t/opc-ua-connectivity/64998/5 "2022-10-10T11:54:31Z")

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Thanks..