# STALE tags via OPC-DA (RSLinx)

**URL:** <https://forum.inductiveautomation.com/t/stale-tags-via-opc-da-rslinx/35107>\
**Category:** Ignition\
**Created:** [May 28, 2020, 4:37am UTC](https://forum.inductiveautomation.com/t/stale-tags-via-opc-da-rslinx/35107 "2020-05-28T04:37:14Z")\
**Posts on this page:** 4\
**Page:** 1

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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:** [May 28, 2020, 4:37am UTC](https://forum.inductiveautomation.com/t/stale-tags-via-opc-da-rslinx/35107/1 "2020-05-28T04:37:14Z")

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I’m using super old and horrible OPC-DA to connect to RSLinx (to connect to Studio Emulate 5000), and I’m connected and can browse tags, but they’re all coming up at STALE quality. When I use a 3rd party OPC client, I can read the values no worries.

RSLinx Classic and Ignition are on the same machine.

Any tips?

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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:** [May 28, 2020, 6:38am UTC](https://forum.inductiveautomation.com/t/stale-tags-via-opc-da-rslinx/35107/2 "2020-05-28T06:38:34Z")

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I managed to get it sorted. I had issues with running RSLinx Classic. I had to kick it in the guts (Australian for ‘restart it’).

However, my setup is actually this:  
**Rockwell VM** : running RSLinx Classic, Logix 5000 Emulate, and Ignition gateway with OPC-UA and OPC-COM modules installed (basically just using to connect locally to OPC-DA to avoid horrid DCOM config and serve up PLC tags to other remote Ignition).  
**Ignition VM** : running full Ignition gateway. This is the Ignition gateway I actually need to be reading the PLC tags.

OK, I know what I’ve been doing wrong. I’m trying to use Ignition as a pass-through OPC-UA server for another Ignition gateway to access tags from, but confused the purpose of a remote tag provider, which is not to create tags locally, but to access them remotely via the gateway network.

I’ve resolved everything by creating an OPC-UA connection to the remote Ignition gateway’s OPC-UA server, dragged all (or most - that took a while…) of the tags from the PLC (via RSLinx - OPC-DA) into the remote Ignition tag browser, and I can now access these tags as I expect, and create new tags within my local Ignition using these tags.

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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:** [May 28, 2020, 3:17pm UTC](https://forum.inductiveautomation.com/t/stale-tags-via-opc-da-rslinx/35107/3 "2020-05-28T15:17:19Z")

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You can also use the OPC COM Tunneller module for this - [https://support.inductiveautomation.com/index.php?/Knowledgebase/Article/View/80/0/a-primer-to-the-opc-com-tunneler-module](https://support.inductiveautomation.com/index.php?/Knowledgebase/Article/View/80/0/a-primer-to-the-opc-com-tunneler-module).

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<div class="post-metadata">

**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:** [May 28, 2020, 9:46pm UTC](https://forum.inductiveautomation.com/t/stale-tags-via-opc-da-rslinx/35107/4 "2020-05-28T21:46:46Z")

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Thanks Paul, super handy to know!!