# Industrial

**URL:** https://discourse.nodered.org/c/industrial/18.md

[Latest](https://discourse.nodered.org/latest.md) · [Categories](https://discourse.nodered.org/categories.md) · [Tags](https://discourse.nodered.org/tags.md)

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## [About the Industrial category](https://discourse.nodered.org/t/about-the-industrial-category/20886)

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**Author:** [@dceejay](https://discourse.nodered.org/u/dceejay)\
**Replies:** 0

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Discussions around Industrial-specific topics. Use this category for all things related to Industrial Controllers, Industrial Protocols (Modbus, Canbus, OPCUA, etc) Factory Automation Production lines

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## [Intercept Modbus errors](https://discourse.nodered.org/t/intercept-modbus-errors/101461)

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**Author:** [@jlt57](https://discourse.nodered.org/u/jlt57)\
**Replies:** 26\
**Last updated:** [3 August 2026 09:47 UTC](https://discourse.nodered.org/t/intercept-modbus-errors/101461 "2026-08-03T09:47:55Z")

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Hello, I am using the Modbus Write and Read functions. I have enabled logging and error reporting, which output to the Windows Command Prompt (cmd) console. How can I intercept these messages directly at the function …

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## [OpcUA server Session timeout](https://discourse.nodered.org/t/opcua-server-session-timeout/101341)

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**Author:** [@Anthony\_kay43](https://discourse.nodered.org/u/Anthony_kay43)\
**Replies:** 2\
**Last updated:** [23 June 2026 19:24 UTC](https://discourse.nodered.org/t/opcua-server-session-timeout/101341 "2026-06-23T19:24:06Z")

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Hi all, This is my first time posting here and im just wishing to share my knowledge so some one else dosent have to go throught the pain i have. I have been working on a opcUA server for some time now, developing a se…

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## [OPC UA Event Subscription Lost After Network Disconnection – Need Guidance on Reconnection Strategy](https://discourse.nodered.org/t/opc-ua-event-subscription-lost-after-network-disconnection-need-guidance-on-reconnection-strategy/101139)

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**Author:** [@sauvagenicolas](https://discourse.nodered.org/u/sauvagenicolas)\
**Replies:** 0\
**Last updated:** [27 May 2026 09:40 UTC](https://discourse.nodered.org/t/opc-ua-event-subscription-lost-after-network-disconnection-need-guidance-on-reconnection-strategy/101139 "2026-05-27T09:40:48Z")

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Hello, I am currently developing a data acquisition system using Node-RED with the node-red-contrib-opcua library to connect to an injection moulding machine via OPC UA (EUROMAP 77 / ENGEL CC300 controller). My goal is…

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## [Mmc failure possible?](https://discourse.nodered.org/t/mmc-failure-possible/100729)

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**Author:** [@Geppy57](https://discourse.nodered.org/u/Geppy57)\
**Replies:** 5\
**Last updated:** [7 April 2026 18:51 UTC](https://discourse.nodered.org/t/mmc-failure-possible/100729 "2026-04-07T18:51:29Z")

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Hello. From some days, an ARM device with node-red give me some error because of EROFS error during write on mmc card. I see on journal the evolution in EXT4-fs functionality. The following are the relative lines from…

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## [Mitsubishi Q-Series PLC](https://discourse.nodered.org/t/mitsubishi-q-series-plc/100668)

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**Author:** [@Shina](https://discourse.nodered.org/u/Shina)\
**Replies:** 4\
**Last updated:** [27 March 2026 14:22 UTC](https://discourse.nodered.org/t/mitsubishi-q-series-plc/100668 "2026-03-27T14:22:21Z")

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Please, I am encountering a timeout issue while trying to request data from a Mitsubishi PLC. I have checked every configuration setting on GX Works2 as to why Node-RED isn't able to request data from the Mitsubishi Q-S…

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## [How can NODE-RED communicate with Mitsubishi FX3U? The communication uses Mitsubishi's programming port, but I couldn't find a usable node in NODE-RED. Has anyone done this before?](https://discourse.nodered.org/t/how-can-node-red-communicate-with-mitsubishi-fx3u-the-communication-uses-mitsubishis-programming-port-but-i-couldnt-find-a-usable-node-in-node-red-has-anyone-done-this-before/100296)

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**Author:** [@chuzehao](https://discourse.nodered.org/u/chuzehao)\
**Replies:** 4\
**Last updated:** [13 March 2026 21:00 UTC](https://discourse.nodered.org/t/how-can-node-red-communicate-with-mitsubishi-fx3u-the-communication-uses-mitsubishis-programming-port-but-i-couldnt-find-a-usable-node-in-node-red-has-anyone-done-this-before/100296 "2026-03-13T21:00:16Z")

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Collect PLC data through the Mitsubishi programming port, but I couldn't find any usable nodes online.

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## [Read Multiple OPCUA "node-red-contrib-opcua"](https://discourse.nodered.org/t/read-multiple-opcua-node-red-contrib-opcua/100549)

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**Author:** [@Vespamike](https://discourse.nodered.org/u/Vespamike)\
**Replies:** 1\
**Last updated:** [13 March 2026 09:55 UTC](https://discourse.nodered.org/t/read-multiple-opcua-node-red-contrib-opcua/100549 "2026-03-13T09:55:57Z")

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I'm asking for your help. I'm using the "node-red-contrib-opcua" library. I need to read several opcua variables. When read individually, everything works. If I put all the "Opcua-Item" nodes in parallel with the "OPCUA\_…

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## [How do you handle analog sensors? I wan to](https://discourse.nodered.org/t/how-do-you-handle-analog-sensors-i-wan-to/100372)

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**Author:** [@Elindo586](https://discourse.nodered.org/u/Elindo586)\
**Replies:** 3\
**Last updated:** [3 March 2026 03:14 UTC](https://discourse.nodered.org/t/how-do-you-handle-analog-sensors-i-wan-to/100372 "2026-03-03T03:14:04Z")

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So I want to do machine monitoring via node red. The link below shows a waveshare unit that takes on/off switches and also able to do Modbus, but it doesn't have a setup to hook analog sensors to the unit. ^^ I am loo…

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## [Nodered restarts several times](https://discourse.nodered.org/t/nodered-restarts-several-times/100451)

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**Author:** [@Piou2fois](https://discourse.nodered.org/u/Piou2fois)\
**Replies:** 6\
**Last updated:** [25 February 2026 11:50 UTC](https://discourse.nodered.org/t/nodered-restarts-several-times/100451 "2026-02-25T11:50:41Z")

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Good morning I have a nodered in docker mainly working to communicate with SIEMENS PLC via S7 (node-red-contrib-s7) connected to influxdb 1.x and using some API for Grafana (to show ping results) I have from time to ti…

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## [Getting I/O signals from old machines to communicate with Node-RED](https://discourse.nodered.org/t/getting-i-o-signals-from-old-machines-to-communicate-with-node-red/100273)

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**Author:** [@Elindo586](https://discourse.nodered.org/u/Elindo586)\
**Replies:** 5\
**Last updated:** [13 February 2026 13:25 UTC](https://discourse.nodered.org/t/getting-i-o-signals-from-old-machines-to-communicate-with-node-red/100273 "2026-02-13T13:25:56Z")

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In another post I asked about how to convert different different voltages into useful voltage that can be fed into a rasberrypi gpio's.. Is there anything that could transmit on/off signals via MQTT to use as an I/Os wi…

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## [Using Node-RED with any AI? any application examples?](https://discourse.nodered.org/t/using-node-red-with-any-ai-any-application-examples/100260)

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**Author:** [@Elindo586](https://discourse.nodered.org/u/Elindo586)\
**Replies:** 1\
**Last updated:** [27 January 2026 21:38 UTC](https://discourse.nodered.org/t/using-node-red-with-any-ai-any-application-examples/100260 "2026-01-27T21:38:52Z")

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So Node-RED is a good monitoring tool for industrial machine applications... I am not sure if I ever want to give the ability of a machine operator to start a machine remotely.. but.. that is a different related topic.. …

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## [Issue facing connection with node-red-contrib-s7 node while connecting siemens s7 200 plc](https://discourse.nodered.org/t/issue-facing-connection-with-node-red-contrib-s7-node-while-connecting-siemens-s7-200-plc/100233)

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**Author:** [@Nilava1992](https://discourse.nodered.org/u/Nilava1992)\
**Replies:** 2\
**Last updated:** [24 January 2026 09:03 UTC](https://discourse.nodered.org/t/issue-facing-connection-with-node-red-contrib-s7-node-while-connecting-siemens-s7-200-plc/100233 "2026-01-24T09:03:44Z")

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Hi, I’m facing a strange issue in Node-RED related to Siemens S7-200 communication. I have an existing Node-RED flow with S7 nodes that connects properly to a Siemens S7-200 PLC. As long as I don’t modify the flow, the…

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## [Industrial Shields/simple node red plc opinion gathering](https://discourse.nodered.org/t/industrial-shields-simple-node-red-plc-opinion-gathering/100038)

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**Author:** [@Utorque](https://discourse.nodered.org/u/Utorque)\
**Replies:** 4\
**Last updated:** [30 December 2025 11:43 UTC](https://discourse.nodered.org/t/industrial-shields-simple-node-red-plc-opinion-gathering/100038 "2025-12-30T11:43:25Z")

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Hi everyone, For a plastic recycling factory that we'll create for an association (small project, non-professional), I am looking for the easiest way to wire all of our machines in a PLC. Given our staff and scale, cost…

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## [Tia Portal - S7 1200 OPC UA -\> NODE RED](https://discourse.nodered.org/t/tia-portal-s7-1200-opc-ua-node-red/99761)

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**Author:** [@josefransilva](https://discourse.nodered.org/u/josefransilva)\
**Replies:** 2\
**Last updated:** [11 December 2025 13:51 UTC](https://discourse.nodered.org/t/tia-portal-s7-1200-opc-ua-node-red/99761 "2025-12-11T13:51:45Z")

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Good morning to all! Im developing a program to a machine to read a sensor of each part made of to count the number of parts by reference. But at this time i have the program on the plc working, in UA Expert i can see …

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## [VDA5050 - anyone had experience or encounter it in the context of Node-RED?](https://discourse.nodered.org/t/vda5050-anyone-had-experience-or-encounter-it-in-the-context-of-node-red/99657)

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**Author:** [@gregorius](https://discourse.nodered.org/u/gregorius)\
**Replies:** 3\
**Last updated:** [24 November 2025 20:07 UTC](https://discourse.nodered.org/t/vda5050-anyone-had-experience-or-encounter-it-in-the-context-of-node-red/99657 "2025-11-24T20:07:01Z")

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Hi There, Another day, another random standard that pops up: VDA 5050 which is: Definition of a communication interface for driverless transport systems (DTS). This recommendation describes the communication interface…

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## [Communication for Mitsubishi PLC Q Series by using MC Protocol Nodes](https://discourse.nodered.org/t/communication-for-mitsubishi-plc-q-series-by-using-mc-protocol-nodes/99628)

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**Author:** [@mamirulazuan](https://discourse.nodered.org/u/mamirulazuan)\
**Replies:** 6\
**Last updated:** [11 November 2025 17:09 UTC](https://discourse.nodered.org/t/communication-for-mitsubishi-plc-q-series-by-using-mc-protocol-nodes/99628 "2025-11-11T17:09:01Z")

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I would like to read from Mitsubishi PLC Q Series by using MC Protocol nodes. However, connection error for the MC Protocol nodes. Anyone got similar issue and know how to resolve? Ethernet type : Built-in (Q03UDVCPU) …

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## [Issues retrieving the complete 1327-character access token](https://discourse.nodered.org/t/issues-retrieving-the-complete-1327-character-access-token/99632)

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**Author:** [@Janmcarlsen](https://discourse.nodered.org/u/Janmcarlsen)\
**Replies:** 6\
**Last updated:** [11 November 2025 11:54 UTC](https://discourse.nodered.org/t/issues-retrieving-the-complete-1327-character-access-token/99632 "2025-11-11T11:54:44Z")

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Hi, I’m having issues getting the complete token from a http request node. The node only returns 218 characters. If I use postman the token is much longer. It is in relation to an api call, with at username and password…

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## [Problem of the connection at node red (node-red-contrib-s7) with S-1200 PLC Siemens](https://discourse.nodered.org/t/problem-of-the-connection-at-node-red-node-red-contrib-s7-with-s-1200-plc-siemens/99633)

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**Author:** [@Cassio](https://discourse.nodered.org/u/Cassio)\
**Replies:** 2\
**Last updated:** [10 November 2025 19:43 UTC](https://discourse.nodered.org/t/problem-of-the-connection-at-node-red-node-red-contrib-s7-with-s-1200-plc-siemens/99633 "2025-11-10T19:43:36Z")

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Hi every budy I need help!! I had a sistem that always run without problem. After 3 month my sistem was instable and them stop. I have a problem of connection at node red (node-red-contrib-s7) with S-1200 PLC Siemen…

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## [I changed to UDP From TCP for Mitsubhishi PLC Fx3u but did not worked in Nodered](https://discourse.nodered.org/t/i-changed-to-udp-from-tcp-for-mitsubhishi-plc-fx3u-but-did-not-worked-in-nodered/99518)

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**Author:** [@Jayeshpitale1](https://discourse.nodered.org/u/Jayeshpitale1)\
**Replies:** 24\
**Last updated:** [10 November 2025 18:00 UTC](https://discourse.nodered.org/t/i-changed-to-udp-from-tcp-for-mitsubhishi-plc-fx3u-but-did-not-worked-in-nodered/99518 "2025-11-10T18:00:59Z")

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I changed to UDP From TCP for Mitsubishi PLC Fx3u but did not work in NodeRED as per the previous Topic @Steve-Mcl told me to Change it from TCP to UDP and i did but its not working now

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## [Modbus TCP failed / Proxmox LXC](https://discourse.nodered.org/t/modbus-tcp-failed-proxmox-lxc/99567)

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**Author:** [@monardfr](https://discourse.nodered.org/u/monardfr)\
**Replies:** 5\
**Last updated:** [3 November 2025 13:31 UTC](https://discourse.nodered.org/t/modbus-tcp-failed-proxmox-lxc/99567 "2025-11-03T13:31:51Z")

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Hi, I get the following error when trying to retrieve PT100 probe values via Modbus TCP (using modbus contrib). Client -\> fsm failed state after sending Get More About It By Logging TCP@192.168.1.201:8887 default Unit…

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## [Node Red to MS Fabric LakeHouse](https://discourse.nodered.org/t/node-red-to-ms-fabric-lakehouse/99519)

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**Author:** [@Engelbert](https://discourse.nodered.org/u/Engelbert)\
**Replies:** 2\
**Last updated:** [27 October 2025 15:33 UTC](https://discourse.nodered.org/t/node-red-to-ms-fabric-lakehouse/99519 "2025-10-27T15:33:02Z")

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Hi guys, I need to connect Node Red to a Fabric LakeHouse in order to send data from a PLC. How can I do this? There is a way to do this? Thank you all! Engelbert

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## [Problem trying to use a node](https://discourse.nodered.org/t/problem-trying-to-use-a-node/99346)

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**Author:** [@ItzGael](https://discourse.nodered.org/u/ItzGael)\
**Replies:** 2\
**Last updated:** [10 October 2025 23:50 UTC](https://discourse.nodered.org/t/problem-trying-to-use-a-node/99346 "2025-10-10T23:50:37Z")

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I'm currently having a problem trying to start node red locally without a connection, I'm currently using node-red-contrib-cip-st-ethernet-ip node And it throws me this error Does anybody know how can I solve it? …

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## [Data length error, expected x got y (x \> y)](https://discourse.nodered.org/t/data-length-error-expected-x-got-y-x-y/99153)

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**Author:** [@BairDev](https://discourse.nodered.org/u/BairDev)\
**Replies:** 2\
**Last updated:** [25 September 2025 07:26 UTC](https://discourse.nodered.org/t/data-length-error-expected-x-got-y-x-y/99153 "2025-09-25T07:26:42Z")

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We can communicate with a device at /dev/ttyAMA0. It uses ModBus RTU, 9600 baud rate. But when I try to read data according to the documentation of the device I am getting the error: "Data length error, expected 7 got…

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## [Problem with s7-1500 and NAT](https://discourse.nodered.org/t/problem-with-s7-1500-and-nat/98929)

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**Author:** [@DWoodlock](https://discourse.nodered.org/u/DWoodlock)\
**Replies:** 3\
**Last updated:** [6 September 2025 05:47 UTC](https://discourse.nodered.org/t/problem-with-s7-1500-and-nat/98929 "2025-09-06T05:47:13Z")

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Hello all, Been working on setting up a large network of s7 machines, and then using NR to retrieve some signals, turn those signals into count and then sending periodically to maintain x. Most of my stufff is working …

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## [Issue with node-red-contrib-cip-st-ethernet-ip Not getting cycle value in debug](https://discourse.nodered.org/t/issue-with-node-red-contrib-cip-st-ethernet-ip-not-getting-cycle-value-in-debug/97863)

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**Author:** [@joseeviral](https://discourse.nodered.org/u/joseeviral)\
**Replies:** 4\
**Last updated:** [30 July 2025 06:14 UTC](https://discourse.nodered.org/t/issue-with-node-red-contrib-cip-st-ethernet-ip-not-getting-cycle-value-in-debug/97863 "2025-07-30T06:14:03Z")

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I am trying to read tag rom Rockwell 1769-L33ER/A compact Logix plc by using node-red-contrib-cip-st-ethernet-ip node version 2.0.3 . ETH ip in node configure with cycle = 2000 ms and timeout is 40000 ms. OS WIN 10 node …

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## [Invalid endpoint message when using Node-Red-contribut-opcua](https://discourse.nodered.org/t/invalid-endpoint-message-when-using-node-red-contribut-opcua/97449)

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**Author:** [@enginebeat](https://discourse.nodered.org/u/enginebeat)\
**Replies:** 2\
**Last updated:** [29 July 2025 20:21 UTC](https://discourse.nodered.org/t/invalid-endpoint-message-when-using-node-red-contribut-opcua/97449 "2025-07-29T20:21:46Z")

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Hi All, Trying to use Node-red-contribut-opcua, but I get the invalid endpoint message. both my Twincat and UAExpert connect no problem and also tried the palette opcua/for-node-red and that seems to work fine, so I'm a…

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## [Node-red-contrib-cip-ethernet-ip Using Multiple Endpoints](https://discourse.nodered.org/t/node-red-contrib-cip-ethernet-ip-using-multiple-endpoints/98255)

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**Author:** [@BrallanH2](https://discourse.nodered.org/u/BrallanH2)\
**Replies:** 1\
**Last updated:** [23 July 2025 10:18 UTC](https://discourse.nodered.org/t/node-red-contrib-cip-ethernet-ip-using-multiple-endpoints/98255 "2025-07-23T10:18:32Z")

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I use the node-red-contrib-cip-ethernet-ip to read/write to ControlLogix PLC (1756-L73 via 1756-EN2T). My Node-REd runs on a Windows Server 2019 machine. Node Red V2.2.2 Node.js V 16.14.0 Has anyone successfully used…

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## [Writing to Data Block in S7 1200 PLC via node-red-contrib-s7](https://discourse.nodered.org/t/writing-to-data-block-in-s7-1200-plc-via-node-red-contrib-s7/98259)

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**Author:** [@pathum](https://discourse.nodered.org/u/pathum)\
**Replies:** 2\
**Last updated:** [23 July 2025 08:25 UTC](https://discourse.nodered.org/t/writing-to-data-block-in-s7-1200-plc-via-node-red-contrib-s7/98259 "2025-07-23T08:25:36Z")

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Hello, I am trying to read and write to a s7 1200 PLC Datablock. I have sucessfully able to read the content of DB1 which contains a array "Test" which contains 20 String variabvles. See the image. Folowing is the …

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## [Config file in .ssh not been created which is leading to know\_hosts verification fail](https://discourse.nodered.org/t/config-file-in-ssh-not-been-created-which-is-leading-to-know-hosts-verification-fail/98139)

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**Author:** [@rohitashav-goLang](https://discourse.nodered.org/u/rohitashav-goLang)\
**Replies:** 1\
**Last updated:** [18 July 2025 13:33 UTC](https://discourse.nodered.org/t/config-file-in-ssh-not-been-created-which-is-leading-to-know-hosts-verification-fail/98139 "2025-07-18T13:33:00Z")

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Hello, We are running a Node-RED image using Docker, and most of the functions seem to be working fine. However, we're experiencing an issue with Git operations. We have a Git project that we use to store our flows. The…

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