# Wago 750-8215 Netvar problems

**URL:** <https://discourse.nodered.org/t/wago-750-8215-netvar-problems/27709>\
**Category:** Industrial\
**Created:** [3 June 2020 11:06 UTC](https://discourse.nodered.org/t/wago-750-8215-netvar-problems/27709 "2020-06-03T11:06:00Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![AmrDwarf](https://avatars.discourse-cdn.com/v4/letter/a/839c29/32.png) [@AmrDwarf](https://discourse.nodered.org/u/AmrDwarf)\
**Post date:** [3 June 2020 11:06 UTC](https://discourse.nodered.org/t/wago-750-8215-netvar-problems/27709/1 "2020-06-03T11:06:00Z")

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Hi,

We are running Node-red, 1.0.6, as a Docker container on a Wago 750-8215 PLC.  
What we want to do is use Netvars to exchange values between the PLC program and Node-red.  
I followed this tutorial for setting things up: [https://www.youtube.com/watch?v=NNqeP3N1j7E](https://www.youtube.com/watch?v=NNqeP3N1j7E)  
At first I tried exactly as in the video but that gave problems with using the same port for both send and receive. Now I try seperate ports for send and receive.

From PLC to Node-red works perfectly.  
But I cannot get the communication from Node-red to the PLC to work.

Any hint as to what I need to look at is most Welcome

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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:** [2 August 2020 11:13 UTC](https://discourse.nodered.org/t/wago-750-8215-netvar-problems/27709/2 "2020-08-02T11:13:58Z")

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