# How to establish a profinet connection using node node-red-contrib-s7

**URL:** https://discourse.nodered.org/t/how-to-establish-a-profinet-connection-using-node-node-red-contrib-s7/80255
**Category:** Industrial
**Created:** [2 August 2023 12:47 UTC](https://discourse.nodered.org/t/how-to-establish-a-profinet-connection-using-node-node-red-contrib-s7/80255 "2023-08-02T12:47:37Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![Willianvcn](https://avatars.discourse-cdn.com/v4/letter/w/ebca7d/32.png) [@Willianvcn](https://discourse.nodered.org/u/Willianvcn)
#### Post date: [2 August 2023 12:47 UTC](https://discourse.nodered.org/t/how-to-establish-a-profinet-connection-using-node-node-red-contrib-s7/80255/1 "2023-08-02T12:47:37Z")

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Hi

I'm trying to get some values from a SINUMERIK 840D sl using the node-red-contrib-s7 on the IOT2040. Does anybody already done this successfully?  
The part referring to Node-red, I imagine I will not have problems, but I have doubts about how to establish a profinet connection between these devices.

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### 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: [2 August 2023 14:26 UTC](https://discourse.nodered.org/t/how-to-establish-a-profinet-connection-using-node-node-red-contrib-s7/80255/2 "2023-08-02T14:26:55Z")

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> [@Willianvcn](#):
>
> how to establish a profinet connection

` node-red-contrib-s7` uses the `s7` protocol

From a web search:

> **The S7 protocol is designed for transfering data into SCADA systems via Ethernet.**  **The PROFINET protocol is used for communication between PLCs and IO modules**. The S7 protocol can be used for communication via PROFINET connector in the PLC device or in add-on communication modules

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### Author: ![Willianvcn](https://avatars.discourse-cdn.com/v4/letter/w/ebca7d/32.png) [@Willianvcn](https://discourse.nodered.org/u/Willianvcn)
#### Post date: [2 August 2023 14:43 UTC](https://discourse.nodered.org/t/how-to-establish-a-profinet-connection-using-node-node-red-contrib-s7/80255/3 "2023-08-02T14:43:03Z")

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Thanks for trying to help me, but I know it's possible to establish communication, I just don't know how to do it.

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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: [1 October 2023 14:43 UTC](https://discourse.nodered.org/t/how-to-establish-a-profinet-connection-using-node-node-red-contrib-s7/80255/4 "2023-10-01T14:43:34Z")

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