# Are OPC Tags for a Disabled Device Stored on the Gateway?

**URL:** <https://forum.inductiveautomation.com/t/are-opc-tags-for-a-disabled-device-stored-on-the-gateway/19247>\
**Category:** Ignition\
**Created:** [August 14, 2018, 5:25pm UTC](https://forum.inductiveautomation.com/t/are-opc-tags-for-a-disabled-device-stored-on-the-gateway/19247 "2018-08-14T17:25:16Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![19tb21](https://avatars.discourse-cdn.com/v4/letter/1/0ea827/32.png) [@19tb21](https://forum.inductiveautomation.com/u/19tb21)\
**Post date:** [August 14, 2018, 5:25pm UTC](https://forum.inductiveautomation.com/t/are-opc-tags-for-a-disabled-device-stored-on-the-gateway/19247/1 "2018-08-14T17:25:16Z")

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How are OPC tags stored on the Gateway?

For example, if I add a device in order to setup tag binding for a new device, enable it and disable the old device, and then switch back to the old device (and tags) by disabling the new device and re-enabling the old device, would I be able to browse the (bad quality) tags of the new, disabled device from my project to continue working on binding the new tags.

This is piggybacking off a previous question of mine: [Project Memory/Tag Structure With Duplicate Device IP](http://forum.inductiveautomation.com/t/project-memory-tag-structure-with-duplicate-device-ip/19172)

Thanks,

T

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**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\
**Post date:** [August 14, 2018, 5:31pm UTC](https://forum.inductiveautomation.com/t/are-opc-tags-for-a-disabled-device-stored-on-the-gateway/19247/2 "2018-08-14T17:31:33Z")

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If you’ve brought in tags from the OPC browser into the Tag Browser, you’ve created tags in Ignition - no matter what happens to the device, those tags will still be there. If you are talking about browsed/discovered OPC tags, those will _not_ be available if the device is not connected - while some drivers do “cache” browse results, they won’t use that cache if the device is disconnected or disabled.

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**Author:** ![19tb21](https://avatars.discourse-cdn.com/v4/letter/1/0ea827/32.png) [@19tb21](https://forum.inductiveautomation.com/u/19tb21)\
**Post date:** [August 14, 2018, 5:43pm UTC](https://forum.inductiveautomation.com/t/are-opc-tags-for-a-disabled-device-stored-on-the-gateway/19247/3 "2018-08-14T17:43:43Z")

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Perfect, yes I meant bring them in through the Tag Browser within the project. I just wanted to make sure I can work “offline” when I inevitably have to roll it back because I have run out of time to commission the new HMI. Thanks!

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<div class="post-metadata">

**Author:** ![19tb21](https://avatars.discourse-cdn.com/v4/letter/1/0ea827/32.png) [@19tb21](https://forum.inductiveautomation.com/u/19tb21)\
**Post date:** [August 29, 2018, 1:36pm UTC](https://forum.inductiveautomation.com/t/are-opc-tags-for-a-disabled-device-stored-on-the-gateway/19247/4 "2018-08-29T13:36:50Z")

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–Follow Up–

When I did what I described, these errors/warnings accumulated in the console logs and appeared to tax the CPU:

![](https://us1.discourse-cdn.com/inductiveautomation/original/2X/6/6c4e3a5c208456a9c888fc33d4b5e783cf9ac7f2.png)

Using the original device (which I basically duplicated and disabled) resolved the issue but what does this mean?