# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=50

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

**Page:** 51

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## [Node Edit highlighting](https://discourse.nodered.org/t/node-edit-highlighting/95698)

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**Author:** [@xytsrm](https://discourse.nodered.org/u/xytsrm)\
**Replies:** 4\
**Last updated:** [28 February 2025 11:20 UTC](https://discourse.nodered.org/t/node-edit-highlighting/95698 "2025-02-28T11:20:04Z")

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Curious issue started. After double-clicking on a node to open the edit window, the edit window opens will all the contents highlighted in blue. Clicking anywhere within the window removes the highlighting. Doesn't appea…

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## [Tcp Request return invalid value](https://discourse.nodered.org/t/tcp-request-return-invalid-value/95701)

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**Author:** [@bbakjae](https://discourse.nodered.org/u/bbakjae)\
**Replies:** 2\
**Last updated:** [28 February 2025 08:47 UTC](https://discourse.nodered.org/t/tcp-request-return-invalid-value/95701 "2025-02-28T08:47:38Z")

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i build an IoT project with XGT-FENet Protocol i send to PLC 38 length byte data. it return 192 length byte data. it worked but when PLC power has turn off and turn on then tcp request has return first 30 characters fro…

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## [Flows stopped in case of missing nodes influxdb and influxdb.out](https://discourse.nodered.org/t/flows-stopped-in-case-of-missing-nodes-influxdb-and-influxdb-out/95659)

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**Author:** [@twohlgemuth](https://discourse.nodered.org/u/twohlgemuth)\
**Replies:** 27\
**Last updated:** [27 February 2025 16:48 UTC](https://discourse.nodered.org/t/flows-stopped-in-case-of-missing-nodes-influxdb-and-influxdb-out/95659 "2025-02-27T16:48:38Z")

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Hello since today morning all works fine with my MQTT, Node-Red, InfluxDB2 and Grafana installation. Then I made backup of my RasberryPI and after them rebooting the RasberryPI. When I now open Node-Red I get error me…

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## [Ded Node on Mac won't install pallets](https://discourse.nodered.org/t/ded-node-on-mac-wont-install-pallets/95669)

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**Author:** [@logic28](https://discourse.nodered.org/u/logic28)\
**Replies:** 12\
**Last updated:** [27 February 2025 14:41 UTC](https://discourse.nodered.org/t/ded-node-on-mac-wont-install-pallets/95669 "2025-02-27T14:41:07Z")

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After successfully installing Red-Node on my MacBook Pro it will not install any additional pallets like the Victron Pallets or eWeLink pallets returning this:

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## [How to render a chart image to send to an email, telegram,](https://discourse.nodered.org/t/how-to-render-a-chart-image-to-send-to-an-email-telegram/94989)

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**Author:** [@ortegafernando](https://discourse.nodered.org/u/ortegafernando)\
**Replies:** 13\
**Last updated:** [27 February 2025 12:35 UTC](https://discourse.nodered.org/t/how-to-render-a-chart-image-to-send-to-an-email-telegram/94989 "2025-02-27T12:35:26Z")

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Hi, I used a lot this chart-image node but now it is outdated , difficult/impossible to install. Does anybody know any similar solution ? It is a node to render a chart image so you can use it to send to an email, t…

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## [toFixed: so Ubuntu = no error - so Raspberry = error](https://discourse.nodered.org/t/tofixed-so-ubuntu-no-error-so-raspberry-error/95690)

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**Author:** [@Giamma](https://discourse.nodered.org/u/Giamma)\
**Replies:** 2\
**Last updated:** [27 February 2025 09:42 UTC](https://discourse.nodered.org/t/tofixed-so-ubuntu-no-error-so-raspberry-error/95690 "2025-02-27T09:42:44Z")

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Hi, I have one pc with ubuntu to test my code and one Raspberry (so raspberry) for my home automation. Why this simple function const pay = Number(msg.payload.toFixed(1)); in Ubuntu is ok and in Raspeberry show this…

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## [Websocket disconnection problem](https://discourse.nodered.org/t/websocket-disconnection-problem/95646)

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**Author:** [@JeromeVISUALS](https://discourse.nodered.org/u/JeromeVISUALS)\
**Replies:** 4\
**Last updated:** [26 February 2025 21:31 UTC](https://discourse.nodered.org/t/websocket-disconnection-problem/95646 "2025-02-26T21:31:13Z")

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Hi there, I try to use Websocket to connect to an external device and receive information, it's all working quite good, but I get WS disconnection every 30 sec, even if I set correctly (at least I guess I do) keepAlive …

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## [TAPO TPlink P100 Smart plug](https://discourse.nodered.org/t/tapo-tplink-p100-smart-plug/95679)

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**Author:** [@Jamie.Williams](https://discourse.nodered.org/u/Jamie.Williams)\
**Replies:** 7\
**Last updated:** [26 February 2025 21:13 UTC](https://discourse.nodered.org/t/tapo-tplink-p100-smart-plug/95679 "2025-02-26T21:13:05Z")

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Hi, Very new to Node-Red, I am trying to integrate a TAPO P100 Smart plug into Node-Red. I have installed the node-red-contrib-tplink-tapo-connect-api nodes and followed some basic instruction I have found online. Whe…

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## [Philips TV and Node-RED](https://discourse.nodered.org/t/philips-tv-and-node-red/95680)

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**Author:** [@kowalmisiek](https://discourse.nodered.org/u/kowalmisiek)\
**Replies:** 8\
**Last updated:** [26 February 2025 21:13 UTC](https://discourse.nodered.org/t/philips-tv-and-node-red/95680 "2025-02-26T21:13:03Z")

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Hello I would like to apologize for my ignorance first. I have never had anything to do with Node-RED and I am trying to understand it somehow. I have read this article: I think it is appropriate for my problem. I wo…

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## [SQLite Plugin Path Issue](https://discourse.nodered.org/t/sqlite-plugin-path-issue/95683)

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**Author:** [@OkimSelim](https://discourse.nodered.org/u/OkimSelim)\
**Replies:** 3\
**Last updated:** [26 February 2025 20:32 UTC](https://discourse.nodered.org/t/sqlite-plugin-path-issue/95683 "2025-02-26T20:32:18Z")

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I'm using sqlite to write to a db on local storage. In trying to make the entire system as automated as possible so I have earlier nodes that check to make sure the destination directory exists and if not creates it. Pr…

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## [Node-red is using random ports any time start](https://discourse.nodered.org/t/node-red-is-using-random-ports-any-time-start/95648)

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**Author:** [@Yovanys](https://discourse.nodered.org/u/Yovanys)\
**Replies:** 13\
**Last updated:** [26 February 2025 14:31 UTC](https://discourse.nodered.org/t/node-red-is-using-random-ports-any-time-start/95648 "2025-02-26T14:31:00Z")

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I'm experiencing a strange issue where Node-RED starts on a random port (e.g., 20901) even though my settings.js file explicitly sets uiPort to 1880. I'm running Node-RED v4.0.9 on Windows Server 2019 within a VMware vir…

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## [MS-SQL-Plus with error operation timed out for an unknown reason](https://discourse.nodered.org/t/ms-sql-plus-with-error-operation-timed-out-for-an-unknown-reason/95667)

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**Author:** [@bobfield](https://discourse.nodered.org/u/bobfield)\
**Replies:** 0\
**Last updated:** [26 February 2025 13:56 UTC](https://discourse.nodered.org/t/ms-sql-plus-with-error-operation-timed-out-for-an-unknown-reason/95667 "2025-02-26T13:56:01Z")

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Hi Dears, I'm using a node-contrib MS-SQL-PLUS to insert a register in a cloud database filled with a value from a PLC Siemens tag. It works fine, but many times I see in the debug sheet of node-red the message 'Error: …

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## [Msg.flush =1 not working to flush rate limit node if connected through link nodes?](https://discourse.nodered.org/t/msg-flush-1-not-working-to-flush-rate-limit-node-if-connected-through-link-nodes/95663)

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**Author:** [@smanjunath211](https://discourse.nodered.org/u/smanjunath211)\
**Replies:** 4\
**Last updated:** [26 February 2025 12:32 UTC](https://discourse.nodered.org/t/msg-flush-1-not-working-to-flush-rate-limit-node-if-connected-through-link-nodes/95663 "2025-02-26T12:32:58Z")

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Is this expected and known or is a bug? I struggled for so long why my flow is not working, but accidentally found out that the msg.flush works only if DIRECTLY connected to the rate limit node. the two top flows are…

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## [Node and Node-red run with many PIDs, and increasing swap memory usage](https://discourse.nodered.org/t/node-and-node-red-run-with-many-pids-and-increasing-swap-memory-usage/95500)

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**Author:** [@IanH](https://discourse.nodered.org/u/IanH)\
**Replies:** 17\
**Last updated:** [24 February 2025 09:16 UTC](https://discourse.nodered.org/t/node-and-node-red-run-with-many-pids-and-increasing-swap-memory-usage/95500 "2025-02-24T09:16:28Z")

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Raspi 3B+ running Buster + NR4.0.2, NodeJS 20.17, NPM 10.8.2 Main problem is the Dashboard gets increasingly sluggish over time including disconnects despite a running on a good network with very low latency. So I sta…

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## [Illegal Instruction after npm install on old pi zero, but ok using install script](https://discourse.nodered.org/t/illegal-instruction-after-npm-install-on-old-pi-zero-but-ok-using-install-script/95487)

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**Author:** [@Colin](https://discourse.nodered.org/u/Colin)\
**Replies:** 17\
**Last updated:** [25 February 2025 22:22 UTC](https://discourse.nodered.org/t/illegal-instruction-after-npm-install-on-old-pi-zero-but-ok-using-install-script/95487 "2025-02-25T22:22:26Z")

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As mentioned in this post I installed node-red on an original Pi zero using the recommended install script. It installed node red 4.0.9 and nodejs 20 and node-red runs fine. However, I find that if I npm remove node-re…

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## [Secure JUST the (UI) Dashboard](https://discourse.nodered.org/t/secure-just-the-ui-dashboard/95644)

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**Author:** [@HarryPottar](https://discourse.nodered.org/u/HarryPottar)\
**Replies:** 1\
**Last updated:** [25 February 2025 19:25 UTC](https://discourse.nodered.org/t/secure-just-the-ui-dashboard/95644 "2025-02-25T19:25:38Z")

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Hello, I have the editor secure, behind VPN, and using the username password. I have numerous API endpoints and use a mixture of header values, including API keys, to help validate the calls. I want to put the (UI) da…

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## [How to Read Tags from CompactLogix PLC](https://discourse.nodered.org/t/how-to-read-tags-from-compactlogix-plc/95639)

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**Author:** [@jawilli6](https://discourse.nodered.org/u/jawilli6)\
**Replies:** 4\
**Last updated:** [25 February 2025 14:29 UTC](https://discourse.nodered.org/t/how-to-read-tags-from-compactlogix-plc/95639 "2025-02-25T14:29:26Z")

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Hello, Looking for guidance with a starting point. In short, I'd like to be able to use Node-Red to read select PLC tags, initiated by some sort of trigger that isn't time. Specifically, AB/Rockwell CompactLogix tags,…

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## [Issue installing node-red-contrib-rtsp-client and node-red-contrib-ffmpeg-spawn](https://discourse.nodered.org/t/issue-installing-node-red-contrib-rtsp-client-and-node-red-contrib-ffmpeg-spawn/95607)

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**Author:** [@Mel](https://discourse.nodered.org/u/Mel)\
**Replies:** 6\
**Last updated:** [25 February 2025 09:39 UTC](https://discourse.nodered.org/t/issue-installing-node-red-contrib-rtsp-client-and-node-red-contrib-ffmpeg-spawn/95607 "2025-02-25T09:39:56Z")

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Hi @BartButenaers and @kevinGodell, firstly thanks so much for your work on making video streaming on node-red so much easier for the rest of us. I was unable to npm install the node-red-contrib-rtsp-client and the node…

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## [Sending modbus bit](https://discourse.nodered.org/t/sending-modbus-bit/92807)

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**Author:** [@wiwan-wijoyo](https://discourse.nodered.org/u/wiwan-wijoyo)\
**Replies:** 4\
**Last updated:** [25 February 2025 09:18 UTC](https://discourse.nodered.org/t/sending-modbus-bit/92807 "2025-02-25T09:18:58Z")

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Hi, I have modbus control for power that works because bit 0, but if I want to control fan speed I have to use bit 12-15. Can you help me on how to do it? thanks \[ { "id": "bced3dc5da31bb7a", "t…

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## [Running Node-RED under Bun instead of Node.js](https://discourse.nodered.org/t/running-node-red-under-bun-instead-of-node-js/95611)

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**Author:** [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)\
**Replies:** 3\
**Last updated:** [25 February 2025 08:22 UTC](https://discourse.nodered.org/t/running-node-red-under-bun-instead-of-node-js/95611 "2025-02-25T08:22:19Z")

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For information, just catching up with what's happening in the world of Bun - the alternative JavaScript server that is meant to be node.js compatible but with some significant upgrades and improvements. They released v…

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## [Configuring HTTP Request for API call](https://discourse.nodered.org/t/configuring-http-request-for-api-call/95592)

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**Author:** [@JPHR](https://discourse.nodered.org/u/JPHR)\
**Replies:** 16\
**Last updated:** [24 February 2025 20:31 UTC](https://discourse.nodered.org/t/configuring-http-request-for-api-call/95592 "2025-02-24T20:31:52Z")

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Trying to control a z-wave switch through a call to the API method object\_prop\_set Direct input to browser: http://192.168.1.118/iungo/api\_request/object\_prop\_set?oid=b05dd514?prop=command?value=off Result: {"ok":tru…

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## [ONVIF node to listen for events](https://discourse.nodered.org/t/onvif-node-to-listen-for-events/95599)

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**Author:** [@k5map](https://discourse.nodered.org/u/k5map)\
**Replies:** 10\
**Last updated:** [24 February 2025 16:09 UTC](https://discourse.nodered.org/t/onvif-node-to-listen-for-events/95599 "2025-02-24T16:09:36Z")

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I've successfully used webhooks to obtain event notification from my Reolink PoE Doorbell but now looking to expand my NR to also capture events from my other Reolink cameras. Has anyone successfully implemented a ONVIF…

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## [Zigbee2Mqtt dimmer -\> wifi bulb brightness](https://discourse.nodered.org/t/zigbee2mqtt-dimmer-wifi-bulb-brightness/95583)

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**Author:** [@Caesar\_Naykid](https://discourse.nodered.org/u/Caesar_Naykid)\
**Replies:** 9\
**Last updated:** [24 February 2025 13:29 UTC](https://discourse.nodered.org/t/zigbee2mqtt-dimmer-wifi-bulb-brightness/95583 "2025-02-24T13:29:19Z")

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Hello, I have a zigbee knob (Knob link) connected to my system with Zigbee2MQTT and I want to dim a WIFI light with it. It's set up and I have a Zigbee2mqtt node in Node-Red with a debug node and when i turn the knob,…

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## [Help understanding buffer parser output](https://discourse.nodered.org/t/help-understanding-buffer-parser-output/94837)

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**Author:** [@ThingsTinkerer](https://discourse.nodered.org/u/ThingsTinkerer)\
**Replies:** 19\
**Last updated:** [24 February 2025 12:57 UTC](https://discourse.nodered.org/t/help-understanding-buffer-parser-output/94837 "2025-02-24T12:57:53Z")

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Got a specific example which got me confused. Configuration: Swap: none Output: key/value Type: int16 (be) Length: 1 Offset: 0 No mask Calculation: 1 Input msg.payload is \[35800,0\]. Output: -29736 How is output dete…

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## [Client\_session\_keepalive\_manag:122 warning : ClientSessionKeepAliveManager#ping\_server Invalid Channel after performing transaction on ReadRequest](https://discourse.nodered.org/t/client-session-keepalive-manag-122-warning-clientsessionkeepalivemanager-ping-server-invalid-channel-after-performing-transaction-on-readrequest/95606)

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**Author:** [@gautamt572](https://discourse.nodered.org/u/gautamt572)\
**Replies:** 0\
**Last updated:** [24 February 2025 10:08 UTC](https://discourse.nodered.org/t/client-session-keepalive-manag-122-warning-clientsessionkeepalivemanager-ping-server-invalid-channel-after-performing-transaction-on-readrequest/95606 "2025-02-24T10:08:00Z")

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Hi I'm facing below issue in one of the nodered flow where we are fetching data from OPCUA server. Sometimes the data flow stops suddenly and gives below error. It doesnt start until we manual restart the flow,Could you…

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## [Is it unsafe to access same object in context and add / delete in parallel?](https://discourse.nodered.org/t/is-it-unsafe-to-access-same-object-in-context-and-add-delete-in-parallel/95563)

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**Author:** [@ThingsTinkerer](https://discourse.nodered.org/u/ThingsTinkerer)\
**Replies:** 11\
**Last updated:** [23 February 2025 12:56 UTC](https://discourse.nodered.org/t/is-it-unsafe-to-access-same-object-in-context-and-add-delete-in-parallel/95563 "2025-02-23T12:56:04Z")

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Got a bit of a tricky situation here. Have a subflow with it's own flow context. When message arrive, context object is loaded and looped through. But at the end of that flow, I load the same context object again to dele…

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## [GPIO is showing OK not the pin state](https://discourse.nodered.org/t/gpio-is-showing-ok-not-the-pin-state/94965)

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**Author:** [@yelkenli](https://discourse.nodered.org/u/yelkenli)\
**Replies:** 23\
**Last updated:** [22 February 2025 22:26 UTC](https://discourse.nodered.org/t/gpio-is-showing-ok-not-the-pin-state/94965 "2025-02-22T22:26:56Z")

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I have 4 GPIO pins that node red on my RPi 3B+ is reading. Three of them show green and '0' a second after deploy. One reads 'ok' in yellow. I can press a test button on my sensor, which rf communicates to a base statio…

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## [Using Ansible with pi install script](https://discourse.nodered.org/t/using-ansible-with-pi-install-script/95571)

<div class="topic-metadata">

**Author:** [@Colin](https://discourse.nodered.org/u/Colin)\
**Replies:** 8\
**Last updated:** [22 February 2025 21:51 UTC](https://discourse.nodered.org/t/using-ansible-with-pi-install-script/95571 "2025-02-22T21:51:42Z")

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Has anyone here used Ansible to install node red and nodejs using the Pi install script? I can see from the help that it can be run silently, but I would be interested to know how others have determined whether it needs…

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## [Nodered - safe connection](https://discourse.nodered.org/t/nodered-safe-connection/95181)

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**Author:** [@John1995](https://discourse.nodered.org/u/John1995)\
**Replies:** 13\
**Last updated:** [22 February 2025 19:41 UTC](https://discourse.nodered.org/t/nodered-safe-connection/95181 "2025-02-22T19:41:58Z")

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Hello, I installed nodered with Nodered Install and at certain point I saw this message at the end of the installation DO NOT EXPOSE NODE-RED TO THE OPEN INTERNET WITHOUT SECURING IT FIRST Even if your Node-RED doesn'…

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## [Streaming http mp3 files to google cast node](https://discourse.nodered.org/t/streaming-http-mp3-files-to-google-cast-node/95579)

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**Author:** [@skibidiandulka](https://discourse.nodered.org/u/skibidiandulka)\
**Replies:** 0\
**Last updated:** [22 February 2025 17:48 UTC](https://discourse.nodered.org/t/streaming-http-mp3-files-to-google-cast-node/95579 "2025-02-22T17:48:59Z")

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Hey, so I am trying to stream mp3 files to my google-cast node (v1). I have the file acessible via http thanks to a simple nohup server. But when I add it inside of the google cast node and activate it nothing plays on …

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