# Ignition to OPC Router Connection Error

**URL:** <https://forum.inductiveautomation.com/t/ignition-to-opc-router-connection-error/99085>\
**Category:** Ignition\
**Tags:** vision\
**Created:** [November 25, 2024, 6:07pm UTC](https://forum.inductiveautomation.com/t/ignition-to-opc-router-connection-error/99085 "2024-11-25T18:07:15Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![vasilevdim](https://avatars.discourse-cdn.com/v4/letter/v/7ba0ec/32.png) [@vasilevdim](https://forum.inductiveautomation.com/u/vasilevdim)\
**Post date:** [November 25, 2024, 6:07pm UTC](https://forum.inductiveautomation.com/t/ignition-to-opc-router-connection-error/99085/1 "2024-11-25T18:07:15Z")

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Hi!  
I try to connect Ignition Vision 8.43 to OPC Router. Previously I have connected Kepserver EX to OPC Router without any issue. I got error

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/8/0/80544943396f4cdc7a95bf3a0c8c35f33b32cc37.png)  
[Ignition-MESBootCamp\_Ignition\_logs\_20241125-2001.zip](https://forum.inductiveautomation.com/uploads/short-url/B6ZMEqmPs4jFGwFL2ZsM00B6Jn.zip) (2.3 MB)

From OPC Router side, I get the error below:

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/0/e/0e2b1aa43e2979beb209ade12aa1a83b752d9ef5.png)  
Any idea?

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**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:** [November 25, 2024, 6:12pm UTC](https://forum.inductiveautomation.com/t/ignition-to-opc-router-connection-error/99085/2 "2024-11-25T18:12:44Z")

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In the top screenshot you are making an OPC UA connection _from_ Ignition, _to_ OPC router, where Ignition is the client.

In the bottom screenshot it appears you have reversed the roles and are trying to connect OPC Router as the client to Ignition's OPC UA server, using the wrong endpoint information.

What are you actually trying to accomplish?

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<div class="post-metadata">

**Author:** ![vasilevdim](https://avatars.discourse-cdn.com/v4/letter/v/7ba0ec/32.png) [@vasilevdim](https://forum.inductiveautomation.com/u/vasilevdim)\
**Post date:** [November 25, 2024, 6:26pm UTC](https://forum.inductiveautomation.com/t/ignition-to-opc-router-connection-error/99085/3 "2024-11-25T18:26:24Z")

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Hi, Kevin,  
right, OPC Router must be Client.

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<div class="post-metadata">

**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:** [November 25, 2024, 6:28pm UTC](https://forum.inductiveautomation.com/t/ignition-to-opc-router-connection-error/99085/4 "2024-11-25T18:28:31Z")

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Ignition's discovery endpoint if you haven't changed any settings will be `opc.tcp://localhost:62541/discovery`. OPC Router must be on the same server in this case.

If you need to access it from another machine you have to change the Bind Address to something like `0.0.0.0` and then restart the gateway.

> **[Ignition's OPC UA Server | Ignition User Manual](https://docs.inductiveautomation.com/docs/8.1/ignition-modules/opc-ua/ignitions-opc-ua-server#opc-ua-server-settings)**
>
> Ignition's OPC UA server, provided by the OPC UA module, allows an ignition installation to utilize Ignition's various device driver modules. In addition, with the module installed, OPC UA clients can connect to Ignition's UA server, exposing any...