# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=101

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

**Page:** 102

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## [How to modify serial node settings from not manual input but runtime code?](https://discourse.nodered.org/t/how-to-modify-serial-node-settings-from-not-manual-input-but-runtime-code/88922)

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**Author:** [@magicfire](https://discourse.nodered.org/u/magicfire)\
**Replies:** 2\
**Last updated:** [25 June 2024 03:58 UTC](https://discourse.nodered.org/t/how-to-modify-serial-node-settings-from-not-manual-input-but-runtime-code/88922 "2024-06-25T03:58:24Z")

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Hi experts, we have a problem when we read parameters from external hardware and how to display the values in the html page as the values are unknown before runtime reading.

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## [Problem/ how to debug Pi-LCD](https://discourse.nodered.org/t/problem-how-to-debug-pi-lcd/88886)

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**Author:** [@Kristian.240623](https://discourse.nodered.org/u/Kristian.240623)\
**Replies:** 14\
**Last updated:** [24 June 2024 17:42 UTC](https://discourse.nodered.org/t/problem-how-to-debug-pi-lcd/88886 "2024-06-24T17:42:50Z")

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Hi all, i am using the module "node-red-node-pilcd" \[node-red-node-pilcd (node) - Node-RED\] which does not work. Under the node in the flow chart is a gray rectangle and the text "not available". Sending any text has …

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## [Strange issue with http-request after upgrade to 4.0](https://discourse.nodered.org/t/strange-issue-with-http-request-after-upgrade-to-4-0/88892)

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**Author:** [@hazbot](https://discourse.nodered.org/u/hazbot)\
**Replies:** 10\
**Last updated:** [24 June 2024 12:55 UTC](https://discourse.nodered.org/t/strange-issue-with-http-request-after-upgrade-to-4-0/88892 "2024-06-24T12:55:47Z")

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Hi all Have been running NodeRed for quite a few years and up until recently was running 3.1.9 using the official amd64 Docker image. Last Friday I updated the container to 4.0, with no other changes. Since then I have …

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## [Serial Modbus server using Node-Red Modbus Flex Server (User MMI)](https://discourse.nodered.org/t/serial-modbus-server-using-node-red-modbus-flex-server-user-mmi/88229)

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**Author:** [@Auto351](https://discourse.nodered.org/u/Auto351)\
**Replies:** 2\
**Last updated:** [23 June 2024 11:44 UTC](https://discourse.nodered.org/t/serial-modbus-server-using-node-red-modbus-flex-server-user-mmi/88229 "2024-06-23T11:44:15Z")

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Im trying to intergrate a Coolmay TK6070FH HMI Touch Screen via RS485 into Node red to display system status I have not been able to find much info and the stuff i found had no resolutions. This is my Flow todate I…

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## [Vehicle electric charger](https://discourse.nodered.org/t/vehicle-electric-charger/88898)

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**Author:** [@Hagory85](https://discourse.nodered.org/u/Hagory85)\
**Replies:** 5\
**Last updated:** [24 June 2024 08:52 UTC](https://discourse.nodered.org/t/vehicle-electric-charger/88898 "2024-06-24T08:52:56Z")

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Hello everyone, I would like to know if any of these two electric vehicle chargers can be managed from the red node... where can I look at it? WallBox Pulsar Plus 7.4kW Single Phase (5m) V2C Trydan TRY32-1-L5 7.4kW Si…

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## [Beginner help - complex battery logic](https://discourse.nodered.org/t/beginner-help-complex-battery-logic/88855)

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**Author:** [@rthorntn](https://discourse.nodered.org/u/rthorntn)\
**Replies:** 4\
**Last updated:** [24 June 2024 06:39 UTC](https://discourse.nodered.org/t/beginner-help-complex-battery-logic/88855 "2024-06-24T06:39:34Z")

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Hi, The forums help would be very much appreciated. So I'm messing about in the (5-minute) wholesale energy market, manually selling back little bits of my home battery. I have 20kwh of batteries, 7kwh of solar, I can…

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## [Home Assistant Node status DISABLED](https://discourse.nodered.org/t/home-assistant-node-status-disabled/88858)

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**Author:** [@dougle03](https://discourse.nodered.org/u/dougle03)\
**Replies:** 15\
**Last updated:** [23 June 2024 20:06 UTC](https://discourse.nodered.org/t/home-assistant-node-status-disabled/88858 "2024-06-23T20:06:47Z")

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V4 of NR Latest V of HA Getting DISABLED node status - The node is not disabled in settings. Any ideas.... The Entity is ok and working elsewhere. Never seen this before, error yes, but not DISABLED....

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## ["Expose as..." field in State Nodes weirdness in Node-RED v4](https://discourse.nodered.org/t/expose-as-field-in-state-nodes-weirdness-in-node-red-v4/88887)

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**Author:** [@NeoDude](https://discourse.nodered.org/u/NeoDude)\
**Replies:** 3\
**Last updated:** [23 June 2024 19:10 UTC](https://discourse.nodered.org/t/expose-as-field-in-state-nodes-weirdness-in-node-red-v4/88887 "2024-06-23T19:10:00Z")

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Hey Folks, First post so go easy on me. I've just upgraded to NodeRed 4.0 and noticed some weird behaviour with the HA State Nodes. When you open a Node to edit it, the "Expose as" field defaults to the first switch in…

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## [Split Node doesn't split an array](https://discourse.nodered.org/t/split-node-doesnt-split-an-array/88881)

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**Author:** [@mickym2](https://discourse.nodered.org/u/mickym2)\
**Replies:** 2\
**Last updated:** [23 June 2024 13:52 UTC](https://discourse.nodered.org/t/split-node-doesnt-split-an-array/88881 "2024-06-23T13:52:45Z")

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I am not sure - i had never before this behaviour. My split Node does not split the array of objects? The Input (shown as debug 2) will not be split and no output of the split node in debug 1 Node. NodeRed Version …

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## [Thoughts on the use of \`link\` nodes (Asking you)](https://discourse.nodered.org/t/thoughts-on-the-use-of-link-nodes-asking-you/88853)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 15\
**Last updated:** [23 June 2024 01:49 UTC](https://discourse.nodered.org/t/thoughts-on-the-use-of-link-nodes-asking-you/88853 "2024-06-23T01:49:25Z")

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Quick question - I don't know if there is an easy answer to this, so I'm asking. Way back when there were no such things as the link-in and link-out nodes. (I'll ignore the call for now) So there were a lot of wires j…

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## [Compare one variable between two values in function](https://discourse.nodered.org/t/compare-one-variable-between-two-values-in-function/88863)

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**Author:** [@devifast](https://discourse.nodered.org/u/devifast)\
**Replies:** 18\
**Last updated:** [22 June 2024 17:51 UTC](https://discourse.nodered.org/t/compare-one-variable-between-two-values-in-function/88863 "2024-06-22T17:51:33Z")

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I want to compare a variable from the message two set values ​​in a function but I can't describe it (I'm bad with the syntax) I imagine it like this: if (msg.payload.current\_value \>= 5 && msg.payload.current\_value =\< 1…

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## [Why does "new Date()" show as an error?](https://discourse.nodered.org/t/why-does-new-date-show-as-an-error/88776)

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**Author:** [@daxliniere](https://discourse.nodered.org/u/daxliniere)\
**Replies:** 10\
**Last updated:** [22 June 2024 17:39 UTC](https://discourse.nodered.org/t/why-does-new-date-show-as-an-error/88776 "2024-06-22T17:39:57Z")

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For some reason new Date() is identified by NR as an error, though the (function) node compiles and runs correctly. Any ideas why this would be? The specific error message is:

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## [Following update wake on lan flow no longer works](https://discourse.nodered.org/t/following-update-wake-on-lan-flow-no-longer-works/88856)

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**Author:** [@wbravin](https://discourse.nodered.org/u/wbravin)\
**Replies:** 4\
**Last updated:** [22 June 2024 17:06 UTC](https://discourse.nodered.org/t/following-update-wake-on-lan-flow-no-longer-works/88856 "2024-06-22T17:06:54Z")

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Hello all I am hosting HA as a vm in proxmox. And i am trying to wol a HTPC on the same network Following updates from HA, and Node red, my wake on lan flow to turn on the htpc via wol wait 15 seconds then turn on my a…

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## [Fehlermeldung "RequestError: connect EHOSTUNREACH 192.168.0.84:80" ](https://discourse.nodered.org/t/fehlermeldung-requesterror-connect-ehostunreach-192-168-0-84-80/88865)

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**Author:** [@rolf1](https://discourse.nodered.org/u/rolf1)\
**Replies:** 4\
**Last updated:** [22 June 2024 16:39 UTC](https://discourse.nodered.org/t/fehlermeldung-requesterror-connect-ehostunreach-192-168-0-84-80/88865 "2024-06-22T16:39:58Z")

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Hallo zusammen, ich bin totaler Anfänger.... bekomme auf einmal diese Fehlermeldung "RequestError: connect EHOSTUNREACH 192.168.0.84:80" bei diesem einfachen flow .... wer kann mir da weiterhelfen ? Grüße Rolf …

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## [Dashboard is not working](https://discourse.nodered.org/t/dashboard-is-not-working/88861)

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**Author:** [@Marv](https://discourse.nodered.org/u/Marv)\
**Replies:** 2\
**Last updated:** [22 June 2024 16:36 UTC](https://discourse.nodered.org/t/dashboard-is-not-working/88861 "2024-06-22T16:36:50Z")

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Why can i not change my dashboard

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## [Node-red dashboard "refused to connect"](https://discourse.nodered.org/t/node-red-dashboard-refused-to-connect/88224)

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**Author:** [@larro96](https://discourse.nodered.org/u/larro96)\
**Replies:** 39\
**Last updated:** [22 June 2024 14:58 UTC](https://discourse.nodered.org/t/node-red-dashboard-refused-to-connect/88224 "2024-06-22T14:58:40Z")

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I am having a problem with my node-red. I am running node-red on a windows 10 PC and using node-red-dashboard as UI. The problem is that sometimes when I get power outage, the node-red stops working. In the browser it sa…

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## [Node-RED to Alexa integration](https://discourse.nodered.org/t/node-red-to-alexa-integration/88735)

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**Author:** [@andrewtholt](https://discourse.nodered.org/u/andrewtholt)\
**Replies:** 11\
**Last updated:** [22 June 2024 14:19 UTC](https://discourse.nodered.org/t/node-red-to-alexa-integration/88735 "2024-06-22T14:19:35Z")

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Just a beginner node red, and am trying to get stuff working with Alexa. I have has some success, in that I have installed the bridge, created a device, added a flow that controls a MQTT plug (I have named FRED).Alexa h…

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## [Basic Contrib CIP to S7 Protocol converter. works well, question on forcing it to write on some interval](https://discourse.nodered.org/t/basic-contrib-cip-to-s7-protocol-converter-works-well-question-on-forcing-it-to-write-on-some-interval/88851)

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**Author:** [@project2501](https://discourse.nodered.org/u/project2501)\
**Replies:** 0\
**Last updated:** [21 June 2024 22:20 UTC](https://discourse.nodered.org/t/basic-contrib-cip-to-s7-protocol-converter-works-well-question-on-forcing-it-to-write-on-some-interval/88851 "2024-06-21T22:20:58Z")

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I'm sure this has been asked, I didn't query for it correctly when searching. If the input side doesn't change state (Eth IP CIP in my case) but the output side (S7) device loses communications but is recovered, the tag…

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## [Cumulative power limitation](https://discourse.nodered.org/t/cumulative-power-limitation/88811)

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**Author:** [@gumue](https://discourse.nodered.org/u/gumue)\
**Replies:** 21\
**Last updated:** [21 June 2024 20:53 UTC](https://discourse.nodered.org/t/cumulative-power-limitation/88811 "2024-06-21T20:53:07Z")

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I've been trying to implement a function for some time, but unfortunately I'm not really getting anywhere and hope someone has an idea. I would like to set up a lighting control with 3 channels (I have 3 sliders in Dash…

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## [Help loading Byte Array for SQL insert](https://discourse.nodered.org/t/help-loading-byte-array-for-sql-insert/88843)

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**Author:** [@grant1](https://discourse.nodered.org/u/grant1)\
**Replies:** 4\
**Last updated:** [21 June 2024 20:30 UTC](https://discourse.nodered.org/t/help-loading-byte-array-for-sql-insert/88843 "2024-06-21T20:30:41Z")

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Happy Friday to all. I am using OpenAI to do some analysis on a photo taken by a RPi camera. With the help provided in this post, I got that all figured out by using a function node. Now I wish to send several pieces …

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## [And function problem](https://discourse.nodered.org/t/and-function-problem/88842)

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**Author:** [@Marv](https://discourse.nodered.org/u/Marv)\
**Replies:** 1\
**Last updated:** [21 June 2024 15:15 UTC](https://discourse.nodered.org/t/and-function-problem/88842 "2024-06-21T15:15:19Z")

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I have a problem-i do node red just as a hobby but i need help with the switch I have made a function -if \< 90 =true Else if \> 90 false-that works but this function is connectet with an and block- an the switch which i…

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## [It possible to configure the Node-RED node "node-red-node-serialport" with \`msg.port\` to dynamically change the port?](https://discourse.nodered.org/t/it-possible-to-configure-the-node-red-node-node-red-node-serialport-with-msg-port-to-dynamically-change-the-port/88816)

<div class="topic-metadata">

**Author:** [@khalil\_khalil](https://discourse.nodered.org/u/khalil_khalil)\
**Replies:** 5\
**Last updated:** [21 June 2024 07:39 UTC](https://discourse.nodered.org/t/it-possible-to-configure-the-node-red-node-node-red-node-serialport-with-msg-port-to-dynamically-change-the-port/88816 "2024-06-21T07:39:35Z")

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Hello, I have a question: Is it possible to configure the Node-RED node "node-red-node-serialport" with msg.port to dynamically change the port? For example, when I send msg.port=COM1, the serialrequest node changes to …

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## [Reset dashboard values](https://discourse.nodered.org/t/reset-dashboard-values/88800)

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**Author:** [@Boerwors](https://discourse.nodered.org/u/Boerwors)\
**Replies:** 21\
**Last updated:** [20 June 2024 23:18 UTC](https://discourse.nodered.org/t/reset-dashboard-values/88800 "2024-06-20T23:18:56Z")

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Hey node heads, i had a quick question. if i've got a dash readout like this: and i wanted to (on press of a reset button on the dash) empty the value fields of all those message nodes... does anyone know of how to o…

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## [Flow process help](https://discourse.nodered.org/t/flow-process-help/88823)

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**Author:** [@Morsey](https://discourse.nodered.org/u/Morsey)\
**Replies:** 4\
**Last updated:** [20 June 2024 21:54 UTC](https://discourse.nodered.org/t/flow-process-help/88823 "2024-06-20T21:54:43Z")

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I am fairly new to node-red, but not to coding. I am hoping for a bit of guidance to flow layout. I am happy with how to use node-red, the different nodes etc. What I am missing is experience with algorithms for node-re…

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## [HTTP request node error 401 "unauthorised" if Node Red Editor credentials activated](https://discourse.nodered.org/t/http-request-node-error-401-unauthorised-if-node-red-editor-credentials-activated/88795)

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**Author:** [@SuperNinja](https://discourse.nodered.org/u/SuperNinja)\
**Replies:** 8\
**Last updated:** [20 June 2024 11:59 UTC](https://discourse.nodered.org/t/http-request-node-error-401-unauthorised-if-node-red-editor-credentials-activated/88795 "2024-06-20T11:59:46Z")

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NR 3.1.11 working on Raspberry pi I wanted to secure access to the Node Red editor by uncommenting the Security\>adminAuth part in settings.js and change the with Hash security password by mine. And since then, when I l…

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## [NODE-RED- Low Code android app builder](https://discourse.nodered.org/t/node-red-low-code-android-app-builder/88794)

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**Author:** [@imperium85](https://discourse.nodered.org/u/imperium85)\
**Replies:** 3\
**Last updated:** [20 June 2024 10:25 UTC](https://discourse.nodered.org/t/node-red-low-code-android-app-builder/88794 "2024-06-20T10:25:31Z")

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Hi Team, I built a dashboard in node red utilizing two softwares and connecting them via their APIs. It works fine, but I reached the point when it would be better to have it in an app. So what I would like to achieve i…

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## [Unsupported engine](https://discourse.nodered.org/t/unsupported-engine/88759)

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**Author:** [@softy2k](https://discourse.nodered.org/u/softy2k)\
**Replies:** 21\
**Last updated:** [20 June 2024 08:04 UTC](https://discourse.nodered.org/t/unsupported-engine/88759 "2024-06-20T08:04:42Z")

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Using NodeRed 3.x.x up to 3.1.10, NodeJS 20, Windows and Ubuntu, I receive this warning when I try to upgrade nodes : Is not a node-red-node-email error, this is for almost (maybe) all nodes. I think, this error is re…

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## [Dashboard 2.0 and vuetify component, send payload to it](https://discourse.nodered.org/t/dashboard-2-0-and-vuetify-component-send-payload-to-it/87724)

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**Author:** [@emiliogi77](https://discourse.nodered.org/u/emiliogi77)\
**Replies:** 0\
**Last updated:** [5 May 2024 13:39 UTC](https://discourse.nodered.org/t/dashboard-2-0-and-vuetify-component-send-payload-to-it/87724 "2024-05-05T13:39:34Z")

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Hi all, I started a few months ago with Node red. Now I'm using Dashboard 2.0. my starting point was, use switch element from Vuetify with the name of the operator, and it works: \[ { "id": "49c3160479f04b6…

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## [Append a timestamp to filename with switch trigger?](https://discourse.nodered.org/t/append-a-timestamp-to-filename-with-switch-trigger/88804)

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**Author:** [@Phyto](https://discourse.nodered.org/u/Phyto)\
**Replies:** 4\
**Last updated:** [19 June 2024 18:39 UTC](https://discourse.nodered.org/t/append-a-timestamp-to-filename-with-switch-trigger/88804 "2024-06-19T18:39:00Z")

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Hi, I use a dashboard switch to trigger the recording of data to a txt file. This part work. Now I need help to append the timestamp to the filename. I had a couple of problem that I partly solved. First one. This is …

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## [BACnet MSTP in Node-RED](https://discourse.nodered.org/t/bacnet-mstp-in-node-red/87659)

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**Author:** [@jgreenmt](https://discourse.nodered.org/u/jgreenmt)\
**Replies:** 6\
**Last updated:** [19 June 2024 18:02 UTC](https://discourse.nodered.org/t/bacnet-mstp-in-node-red/87659 "2024-06-19T18:02:04Z")

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Hello, I am attempting to read a BACnet MSTP device in Node-RED running on a Raspberry Pi. I'm connecting to the device via an RS-485 to USB adapter. I have successfully communicated to the device using YABE (Yet Anothe…

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