# OPC UA Client Node Errors

**URL:** <https://discourse.nodered.org/t/opc-ua-client-node-errors/38598>\
**Category:** General\
**Created:** [5 January 2021 15:57 UTC](https://discourse.nodered.org/t/opc-ua-client-node-errors/38598 "2021-01-05T15:57:55Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![psalibe](https://avatars.discourse-cdn.com/v4/letter/p/e9c0ed/32.png) [@psalibe](https://discourse.nodered.org/u/psalibe)\
**Post date:** [5 January 2021 15:57 UTC](https://discourse.nodered.org/t/opc-ua-client-node-errors/38598/1 "2021-01-05T15:57:56Z")

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I am using a Siemens S7-1200 PLC and connecting it within Node-Red on a Siemens IOT2040 and through to the OPC UA Client Node. Sometimes it works and gives the "active reading" and goes on a little run where it works, but then randomly goes red and throws "connection error Error: Connection Break" or "connection error Error: Server end point not known yet". These errors seem to change and I have also attached screenshots of two different error messages. Every time this happens I have to reboot the IOT2040 and it seems to reset it, but once it throws errors I cannot get it back.

 ![Node-Red Screenshot 2](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/d/f/df34e5c4f54ea57d1177f37e03c6729da09626ff.png)

 ![Node-Red Screenshot 1](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/0/0/00c4dda6c9496c44257bd10082fc87a061d5214a.png)

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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:** [6 March 2021 15:58 UTC](https://discourse.nodered.org/t/opc-ua-client-node-errors/38598/2 "2021-03-06T15:58:07Z")

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Closed on 6 March 2021 15:58 UTC

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