I am not able to establish communication to Mitsubishi PLC. here are some of the setup screens on PLC and Read node. I have tried to change some of the node setting and I am yet to establish connection. Any Idea for me to try? [image] [image] [image]

Install node-red-node-ping, can your node-red ping the plc? Have you turned the PLC off/on after changing settings? How have you set the ports on the plc? (Show screenshot)

Here is a thread that might help [image] Mitsubishi Q02CPU comm. through Q71E71-100 Industrial Hi! I am currently trying to read a Q02CPUs tags through a Q71E71-100 ethernet card that was installed into the Mitsubishi PLC. I am trying to access the Ethernet card through the default open UDP ports 5000/5001 or the default open TCP ports 5002 which my mitsubishi experienced colleague recommended. Connection with IPs etc are all OK. I've seen this post: Q-series [solution] And tried to verify possible errors with it but no success, I am getting a "Error: timeout" when trying to poll and r…

Looks like I can ping. I was able to ping in CMD [image] We did not turn it off yet. will try that

[image] Ok got it working by changing built in ethernet port open settings

From Subject Received Size Categories Jason Meyer 2:18 PM 114 KB

using the read node I though i would be able to monitor this PLC value for whenever it changes and not have to use an Inject to see the value thru a debug node? I realize this may be a basic Node-Red question... [ { "id": "08a482e7a2022352", "type": "switch", "z": "c409bd4bcb4231c2", "name": "=500", "property": "payload", "propertyType": "msg", "rules": [ { "t": "eq", "v": "500", "vt": "str" } ], "checkall": "true", "repair": false, "outputs": 1, "x": 350, "y": 1420, "wires": [ [ "4771c477e05effe7" ] ] }, { "id": "944050346ac58354", "type": "MC Read", "z": "c409bd4bcb4231c2", "name": "D03804", "topic": "", "connection": "8bf9ce709d0bac70", "address": "D03804", "addressType": "msg", "outputFormat": "1", "errorHandling": "throw", "outputs": 1, "x": 160, "y": 1420, "wires": [ [ "08a482e7a2022352" ] ] }, { "id": "4771c477e05effe7", "type": "debug", "z": "c409bd4bcb4231c2", "name": "", "active": true, "tosidebar": true, "console": false, "tostatus": false, "complete": "payload", "targetType": "msg", "statusVal": "", "statusType": "auto", "x": 570, "y": 1420, "wires": }, { "id": "8bf9ce709d0bac70", "type": "MC Protocol Connection", "name": "PLC1", "host": "192.168.3.39", "port": "3001", "protocol": "UDP", "frame": "3E", "plcType": "Q", "ascii": false, "PLCStation": "", "PCStation": "", "PLCModuleNo": "", "network": "", "octalInputOutput": false, "timeout": "1000" } ]

You can use the rbe/filter node to differentiate changes. My advice it to program the plc to out all values of interest into 1 contiguous area (e.g D1000-D1199) and read all values at once then use buffer-parser to convert the values into book/string/float/int. That way, there are less requests and all data is concurrent.

In order to make code readable and usable it is necessary to surround your code with three backticks (also known as a left quote or backquote ```) ``` code goes here ``` You can edit and correct your post by clicking the pencil :pencil2: icon. See this post for more details - How to share code or flow json

Node-RED

Node-RED Forum

Mitsubishi MC Protocol Read Node Not connected or timeout

Industrial

Steve-Mcl 11 March 2022 21:35 3

Here is a thread that might help

Topic		Replies	Views
Mitsubishi Q Series Node Red Help Industrial	14	3095	30 September 2020
Question: Mitsubish Q Series-Node Red MC Protocol Time Out Industrial	1	201	3 July 2024
How to connect Mitsubishi plc fx3u and Fx5u with node red Industrial	13	1679	11 October 2024
Read data Register value in node red Industrial node-red-dashboard	5	283	6 March 2023
How to Reload Nodered flow or tab using function node or else General	19	489	17 November 2024

Copyright OpenJS Foundation and Node-RED contributors. All rights reserved. The OpenJS Foundation has registered trademarks and uses trademarks. For a list of trademarks of the OpenJS Foundation, please see our Trademark Policy and Trademark List. Trademarks and logos not indicated on the list of OpenJS Foundation trademarks are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.

Mitsubishi MC Protocol Read Node Not connected or timeout

Related topics