# How to connect Mitsubishi plc fx3u and Fx5u with node red

**URL:** <https://discourse.nodered.org/t/how-to-connect-mitsubishi-plc-fx3u-and-fx5u-with-node-red/92205>\
**Category:** Industrial\
**Created:** [7 October 2024 04:18 UTC](https://discourse.nodered.org/t/how-to-connect-mitsubishi-plc-fx3u-and-fx5u-with-node-red/92205 "2024-10-07T04:18:02Z")\
**Posts on this page:** 1\
**Showing post:** 4

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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:** [7 October 2024 16:28 UTC](https://discourse.nodered.org/t/how-to-connect-mitsubishi-plc-fx3u-and-fx5u-with-node-red/92205/4 "2024-10-07T16:28:10Z")

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Sorry, but I cannot understand this.

Q1: What is the IP, Gateway and Mask of the PLC?

Q2: What is the IP, Gateway and Mask of the computer where Node-RED is running?

Q3: Show me what "Open Settings" you have in the FX3u PLC

Q4: Show me a screen shot of the MC Protocol config node as you have set it up in Node-RED

* * *

NOTE:

I have 20y experience of Mitsi PLCs + data collection. I can pretty much predict your life every 2~4 weeks - you will be resetting the PLC because the TCP connection has locked up. I strongly recommend UDP connection instead.

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