# Node-red-opcua-client: Local own certificate is not used

**URL:** <https://discourse.nodered.org/t/node-red-opcua-client-local-own-certificate-is-not-used/50490>\
**Category:** Industrial\
**Created:** [1 September 2021 09:13 UTC](https://discourse.nodered.org/t/node-red-opcua-client-local-own-certificate-is-not-used/50490 "2021-09-01T09:13:34Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Friede10](https://avatars.discourse-cdn.com/v4/letter/f/7993a0/32.png) [@Friede10](https://discourse.nodered.org/u/Friede10)\
**Post date:** [1 September 2021 09:13 UTC](https://discourse.nodered.org/t/node-red-opcua-client-local-own-certificate-is-not-used/50490/1 "2021-09-01T09:13:34Z")

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Hello,

i am trying to connect a raspberry pi 3b with a siemens s7-1500 using the opcua server-client-connection. I got node-red v2.0.5 and node-red-contrib-opcua v0.2.236 installed. Trying to connect to the PLC, I get the Error:

```auto
1 Sep 10:49:51 - [info] Flows werden gestartet
1 Sep 10:49:51 - [info] [OpcUa-Client:26b75b0ddabff64d] Local 'own' certificate is NOT used.
1 Sep 10:49:51 - [info] Flows sind gestartet

```

Any idea how i can solve this problem?

Thanks and best regards

Friede

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [31 October 2021 09:14 UTC](https://discourse.nodered.org/t/node-red-opcua-client-local-own-certificate-is-not-used/50490/2 "2021-10-31T09:14:01Z")

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