# OPC UA server

**URL:** <https://forum.inductiveautomation.com/t/opc-ua-server/3497>\
**Category:** General Discussion\
**Created:** [October 26, 2011, 3:55pm UTC](https://forum.inductiveautomation.com/t/opc-ua-server/3497 "2011-10-26T15:55:24Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![yyao](https://avatars.discourse-cdn.com/v4/letter/y/76d3ee/32.png) [@yyao](https://forum.inductiveautomation.com/u/yyao)\
**Post date:** [October 26, 2011, 3:55pm UTC](https://forum.inductiveautomation.com/t/opc-ua-server/3497/1 "2011-10-26T15:55:24Z")

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I am trying to connect to the OPC UA server with a test client I wrote in csharp. Is it possible or igintion OPC UA server is java based? If I can do it, is there any instruction I can follow to make it happen?

Thanks!

-Yao

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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:** [October 26, 2011, 3:57pm UTC](https://forum.inductiveautomation.com/t/opc-ua-server/3497/2 "2011-10-26T15:57:47Z")

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It’s possible, yes. You should only need to tell your C# client the hostname of Ignition and tell it to connect on port 4096.

By default the Ignition OPC-UA server requires a username and password to activate a session, but this can be disabled in the OPC-UA Settings area of the Ignition gateway.

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**Author:** ![yyao](https://avatars.discourse-cdn.com/v4/letter/y/76d3ee/32.png) [@yyao](https://forum.inductiveautomation.com/u/yyao)\
**Post date:** [October 31, 2011, 8:40pm UTC](https://forum.inductiveautomation.com/t/opc-ua-server/3497/3 "2011-10-31T20:40:54Z")

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Thanks for your help!

My client was able to connect to the server. Now what I want to achieve is to set some montioritems on the simulator driver, specifically I am using Demo Test dairy. I created a group with item Motor 8/Amps and set some trigger and I was able to get alerts through the website but my client did not seem getting any alert. The client subscribes a monitoritem with startnode Motor 8. Do you have any client examples code for receiving alarms and events?

Thanks again!

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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:** [October 31, 2011, 9:55pm UTC](https://forum.inductiveautomation.com/t/opc-ua-server/3497/4 "2011-10-31T21:55:53Z")

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Our OPC-UA server doesn’t support the alarms specification for OPC-UA, just the basic subscription and data change facets.