Hi There, The problem which i faced for Fx3U has got solved. and i would tell the Plc Guy to Change TCP to UDP as you Suggested me. But i have another Issue with Fx5U which one plc is master and other are slave the issue is that it is not communicating with mc protocol as i faced issue with Fx3U …

The solution I discovered involved increasing the timeout from 1000 to 10000. Additionally, I reset the Other Thing to its default value and changed the Frame type to 3E, which resulted in excellent performance.

[image] Jayeshpitale1: came Configured by Chinese Man and they are not giving the access to this PLC And that is why your engineers should be sacked :wink: the design spec should always state "access to the PLC is required"

[image] Jayeshpitale1: is there any way to connect me on my laptop or can you provide your contact for better understanding What about this. you didn't answered. Not sure what the question means. but if you mean "can your personal laptop connect" then probably not - due to the afore mentio…

@Steve-Mcl But they have provided an old program with the setting above which i send you before

[image] Jayeshpitale1: But they have provided an old program with the setting above Not really interested in somthing old. I am only interested in what the PLC currently has set.

@Steve-Mcl that setting has set on this plc with a password Please help me with a solution that i can work on it is there any way to get a remote support so that you can access through the GX work program which i send you also you can communicate with plc

[image] Jayeshpitale1: setting has set on this plc with a password ok? and? If you cannot change it, then there is nothing I can do to help. I can give you some advice though - invest in OMRON PLC and get rid of the awful Mitsi crap. If you cannot, then buy another FX PLC and upload the pr…

Sorry, one other potential option - run Node-RED on the server with IP .13 (as per the IP filter on SLMP connection No 1) you will likely clash with the OPC server connection and be super unreliable (so get rid of Kepware too, if you can)

@Steve-Mcl the SLMP Connection No 1 has a HMI with address .13 and other two connection has 2 slave PLC

Oh, there might be one more way. Are the FX3 and the FX5 on the same IP network? Do they both have the unique station numbers? Do they both have the SAME network number? (the mitsi net number)

Are the FX3 and the FX5 on the same IP network? Yes same network but not connected with each other Do they both have the unique station numbers? the two Fx3U have same Station number but i dont know about Fx5u it is not mentioned in program Do they both have the SAME network number? (the mi…

FX5U PLC Not Communicating with mc protocol node in Node-RED

Industrial

Topic		Replies	Views
How to connect Mitsubishi plc fx3u and Fx5u with node red Industrial	14	1318	11 October 2024
Node-red node control X, Y, D of Mitsubishi FX5U PLC Industrial	6	1048	17 July 2022
I changed to UDP From TCP for Mitsubhishi PLC Fx3u but did not worked in Nodered Industrial	24	283	10 November 2025
Miscommunication with Mitsubishi Fx3u-128M connected to Fx3u-Enet-adp with node red Industrial	2	126	5 January 2025
How to connect Mitsubishi PLC FX5U-32M to Node red using node's available in Node red and Without using OPC server / Kepware Industrial	6	3554	7 June 2020

FX5U PLC Not Communicating with mc protocol node in Node-RED

Related topics