# OPC only displays the PLC's diagnostic tags **URL:** \ **Category:** Ignition\ **Created:** [January 29, 2025, 4:54pm UTC](https://forum.inductiveautomation.com/t/opc-only-displays-the-plcs-diagnostic-tags/101559 "2025-01-29T16:54:33Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![christopher.berg](https://avatars.discourse-cdn.com/v4/letter/c/67e7ee/32.png) [@christopher.berg](https://forum.inductiveautomation.com/u/christopher.berg)\ **Post date:** [January 29, 2025, 4:54pm UTC](https://forum.inductiveautomation.com/t/opc-only-displays-the-plcs-diagnostic-tags/101559/1 "2025-01-29T16:54:33Z")
I setup a new PLC on our development server. It's an AB 1756-L85E on 28.012. I set it up on the gateway using the Allen-Bradley Logix Driver. In the past I've never had to do anything more than give a PLC a name and an IP address and it just worked. I did the same this time and all I can see in the OPC browser is the Diagnostic folder and the tags beneath it. I setup the PLC on a couple different gateways and same results for all of them. Auto-browsing is turned on... Is there something on the PLC that I need to check that might be different from some of my others that's not obvious? ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [January 29, 2025, 4:55pm UTC](https://forum.inductiveautomation.com/t/opc-only-displays-the-plcs-diagnostic-tags/101559/2 "2025-01-29T16:55:22Z")
The slot number defaults to 0, is your PLC at a different slot in a chassis? ---
**Author:** ![christopher.berg](https://avatars.discourse-cdn.com/v4/letter/c/67e7ee/32.png) [@christopher.berg](https://forum.inductiveautomation.com/u/christopher.berg)\ **Post date:** [January 29, 2025, 6:20pm UTC](https://forum.inductiveautomation.com/t/opc-only-displays-the-plcs-diagnostic-tags/101559/3 "2025-01-29T18:20:36Z")
/facepalm Thanks Kevin