# How to check if my OPC Server is running/online

**URL:** <https://discourse.nodered.org/t/how-to-check-if-my-opc-server-is-running-online/35871>\
**Category:** General\
**Created:** [13 November 2020 15:57 UTC](https://discourse.nodered.org/t/how-to-check-if-my-opc-server-is-running-online/35871 "2020-11-13T15:57:59Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![memoAr](https://avatars.discourse-cdn.com/v4/letter/m/a587f6/32.png) [@memoAr](https://discourse.nodered.org/u/memoAr)\
**Post date:** [13 November 2020 15:57 UTC](https://discourse.nodered.org/t/how-to-check-if-my-opc-server-is-running-online/35871/1 "2020-11-13T15:57:59Z")

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Hi Guys, first of all thank you for being so active here. You already helped me a lot!  
But now I haven't found a solution for a question the first time.

My Problem is, that I want to check if my OPC Server (ip looks something like this opc.tcp://12.345.678.90:4840/) is running/online.  
If I use the Ping Node I don't get a payload...

So it's not about the device the server is running on, but if I am accessing data from it right now. I don't know why but often even if the server is still running, I can't access the data from it.  
and in this case I wan't the server to be shown as if it wasn't running.

Has someone an Idea how I can check the status? Or maybe even knows the issue behind the OPC Client node showing that my sever isnt' running?

THANK YOU for your help already and sorry if I describe things weird... I am neither an native speaker nor have I experience in Node-Red ☹

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [12 January 2021 15:58 UTC](https://discourse.nodered.org/t/how-to-check-if-my-opc-server-is-running-online/35871/2 "2021-01-12T15:58:00Z")

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Closed on 12 January 2021 15:58 UTC

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