# OPC UA Server to comunicate with a scada

**URL:** <https://discourse.nodered.org/t/opc-ua-server-to-comunicate-with-a-scada/31843>\
**Category:** Industrial\
**Created:** [21 August 2020 15:45 UTC](https://discourse.nodered.org/t/opc-ua-server-to-comunicate-with-a-scada/31843 "2020-08-21T15:45:10Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![perico](https://avatars.discourse-cdn.com/v4/letter/p/bbce88/32.png) [@perico](https://discourse.nodered.org/u/perico)\
**Post date:** [21 August 2020 15:45 UTC](https://discourse.nodered.org/t/opc-ua-server-to-comunicate-with-a-scada/31843/1 "2020-08-21T15:45:11Z")

</div>

Hi, there is any example about an OPC UA server? I'm new on it and I have some doubts, also the examples that I looked doesn't solve my doubts.

My node red receives data via MQTT and I need to create the OPCUA server to comunicate this data with a future SCADA, which is my endpoint in this three elements? I'm assuming that is the endpoint created with the opcua server node.

Thanks.

---

<div class="post-metadata">

**Author:** ![Steve-Mcl](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/steve-mcl/32/4826_2.png) [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)\
**Post date:** [21 August 2020 16:49 UTC](https://discourse.nodered.org/t/opc-ua-server-to-comunicate-with-a-scada/31843/2 "2020-08-21T16:49:30Z")

</div>

Which scada are you using? If it is recent it might support MQTT itself.

Secondly, why are you paying for a scada? I'm actively reducing the number of scada licences and replacing the data acquisition side with node-red and the HMI part with either physical HMIs or web / dashboard.

Lastly, I've not myself created an OPCUA server in node-red but there are several packages for doing this.

---

<div class="post-metadata">

**Author:** ![perico](https://avatars.discourse-cdn.com/v4/letter/p/bbce88/32.png) [@perico](https://discourse.nodered.org/u/perico)\
**Post date:** [24 August 2020 09:23 UTC](https://discourse.nodered.org/t/opc-ua-server-to-comunicate-with-a-scada/31843/3 "2020-08-24T09:23:12Z")

</div>

Well I need to ask it because I'm working for others and they asked me for OPC UA, but I consider this idea of MQTT.  
About the packages I had it, but due to my little experience now I'm trying to understand how I can use it to create the server and his functioning.

Thanks Steve!

---

<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:** [23 October 2020 09:23 UTC](https://discourse.nodered.org/t/opc-ua-server-to-comunicate-with-a-scada/31843/4 "2020-10-23T09:23:15Z")

</div>

This topic was automatically closed 60 days after the last reply. New replies are no longer allowed.