# Creating a fetch/write request to retrieve data from a PLC

**URL:** <https://discourse.nodered.org/t/creating-a-fetch-write-request-to-retrieve-data-from-a-plc/84871>\
**Category:** Industrial\
**Created:** [24 January 2024 10:18 UTC](https://discourse.nodered.org/t/creating-a-fetch-write-request-to-retrieve-data-from-a-plc/84871 "2024-01-24T10:18:28Z")\
**Posts on this page:** 2\
**Page:** 2

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**Author:** ![MystiiK](https://avatars.discourse-cdn.com/v4/letter/m/c89c15/32.png) [@MystiiK](https://discourse.nodered.org/u/MystiiK)\
**Post date:** [1 February 2024 10:27 UTC](https://discourse.nodered.org/t/creating-a-fetch-write-request-to-retrieve-data-from-a-plc/84871/21 "2024-02-01T10:27:47Z")

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I tried the s7 node with your configuration and it worked perfectly ! The vendor of the chamber has talked about this s7 node one time but it was not clear at all. He used to talk about this Fetch/write protocol using the ports 2000 and 2001, create the frame, etc... I've never heard about this port 102 before you told me. I hope this topic will help other people in the future, because I've just spent 2 weeks for this...

Thank you !

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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:** [15 February 2024 10:28 UTC](https://discourse.nodered.org/t/creating-a-fetch-write-request-to-retrieve-data-from-a-plc/84871/22 "2024-02-15T10:28:12Z")

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