# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=302

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

**Page:** 303

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## [Unable to install node-red-contrib-modbus](https://discourse.nodered.org/t/unable-to-install-node-red-contrib-modbus/66307)

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**Author:** [@parkdev](https://discourse.nodered.org/u/parkdev)\
**Replies:** 4\
**Last updated:** [28 October 2022 22:00 UTC](https://discourse.nodered.org/t/unable-to-install-node-red-contrib-modbus/66307 "2022-10-28T22:00:15Z")

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Hi guys, I'm having issues getting this installed and have ran out of ideas on how to get it to work. So far I've tried a complete reinstall, setting NODE\_TLS\_REJECT\_UNAUTHORIZED=0, tried a manual installation. Nothing …

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## [Reading data from an RS485 sensor using the Modbus pallete](https://discourse.nodered.org/t/reading-data-from-an-rs485-sensor-using-the-modbus-pallete/67999)

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**Author:** [@fjamil](https://discourse.nodered.org/u/fjamil)\
**Replies:** 1\
**Last updated:** [28 October 2022 21:56 UTC](https://discourse.nodered.org/t/reading-data-from-an-rs485-sensor-using-the-modbus-pallete/67999 "2022-10-28T21:56:40Z")

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Hey everyone, very new to using the Modbus RTU protocol to get a reading from an ultrasonic sensor in real time. I believe I have trouble accessing the data stored in the registers. After having used simple Read, Write, …

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## [Template widget checkbox toggle update issue](https://discourse.nodered.org/t/template-widget-checkbox-toggle-update-issue/69729)

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**Author:** [@Mbessing](https://discourse.nodered.org/u/Mbessing)\
**Replies:** 1\
**Last updated:** [28 October 2022 19:34 UTC](https://discourse.nodered.org/t/template-widget-checkbox-toggle-update-issue/69729 "2022-10-28T19:34:43Z")

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Hi, I'm creating a project in which I want to be able to check/uncheck a checkbox manually (by clicking) and also by an external source such as MQTT input etc. In my test I simulate the external source by an inject node…

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## [Parse specific text from payload in Node-Red?](https://discourse.nodered.org/t/parse-specific-text-from-payload-in-node-red/69708)

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**Author:** [@Gawan](https://discourse.nodered.org/u/Gawan)\
**Replies:** 6\
**Last updated:** [28 October 2022 17:59 UTC](https://discourse.nodered.org/t/parse-specific-text-from-payload-in-node-red/69708 "2022-10-28T17:59:04Z")

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Hi all, I have a small task but it is a bit too tricky for me :slight\_smile: I am running a script from an EXEC Node that sometimes failes (once a day). In these cases I have to find out the ID of this script (usin…

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## [How to create ui builder dashboard](https://discourse.nodered.org/t/how-to-create-ui-builder-dashboard/69733)

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**Author:** [@node-to](https://discourse.nodered.org/u/node-to)\
**Replies:** 2\
**Last updated:** [28 October 2022 17:10 UTC](https://discourse.nodered.org/t/how-to-create-ui-builder-dashboard/69733 "2022-10-28T17:10:41Z")

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Hi, I trying to learn ui builder but, when I apply html file there is no out put, only a default ui is appearing. Can any one guide me.

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## [Join node using just timeout to send](https://discourse.nodered.org/t/join-node-using-just-timeout-to-send/69680)

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**Author:** [@Colin](https://discourse.nodered.org/u/Colin)\
**Replies:** 1\
**Last updated:** [28 October 2022 13:22 UTC](https://discourse.nodered.org/t/join-node-using-just-timeout-to-send/69680 "2022-10-28T13:22:23Z")

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This isn't working for me, which I find surprising. I have a Join node configured as So it should send a message 1 second after the first message, then wait for more messages and do the same again. At least that is…

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## [Not able to read response from device on USB](https://discourse.nodered.org/t/not-able-to-read-response-from-device-on-usb/69718)

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**Author:** [@hary](https://discourse.nodered.org/u/hary)\
**Replies:** 2\
**Last updated:** [28 October 2022 12:54 UTC](https://discourse.nodered.org/t/not-able-to-read-response-from-device-on-usb/69718 "2022-10-28T12:54:01Z")

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I have a device I can communicate to via USB/RS232 port. I know it receive the command I send because it react to them. I have a command to retrieve its state that should respond but I'm not able to read any response !…

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## [Switch state change](https://discourse.nodered.org/t/switch-state-change/69687)

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**Author:** [@kvs](https://discourse.nodered.org/u/kvs)\
**Replies:** 1\
**Last updated:** [28 October 2022 12:49 UTC](https://discourse.nodered.org/t/switch-state-change/69687 "2022-10-28T12:49:44Z")

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In HA, you can create auxiliary elements, such as a switch. I read the state of the switch through “current state”. And how to manage it?

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## [Install node red on old android, how to?](https://discourse.nodered.org/t/install-node-red-on-old-android-how-to/69670)

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**Author:** [@Elberto](https://discourse.nodered.org/u/Elberto)\
**Replies:** 4\
**Last updated:** [28 October 2022 12:34 UTC](https://discourse.nodered.org/t/install-node-red-on-old-android-how-to/69670 "2022-10-28T12:34:14Z")

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Hi to all users! I have several old android smartphones and tablets, I would like to use them as devices for domotic applications. I followed instructions about installing node red on android but I can't install packag…

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## [Single subflow - check number of instances?](https://discourse.nodered.org/t/single-subflow-check-number-of-instances/69727)

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**Author:** [@bakman2](https://discourse.nodered.org/u/bakman2)\
**Replies:** 5\
**Last updated:** [28 October 2022 11:39 UTC](https://discourse.nodered.org/t/single-subflow-check-number-of-instances/69727 "2022-10-28T11:39:21Z")

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I am creating a flow that I want to contain in a subflow, but as it exposes a websocket and http endpoint, I only want 1 subflow node to exist in the workspace (ie. can only expose the same http endpoint). Is there a wa…

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## [How to know the status available in a node?](https://discourse.nodered.org/t/how-to-know-the-status-available-in-a-node/69703)

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**Author:** [@vra](https://discourse.nodered.org/u/vra)\
**Replies:** 3\
**Last updated:** [28 October 2022 11:09 UTC](https://discourse.nodered.org/t/how-to-know-the-status-available-in-a-node/69703 "2022-10-28T11:09:53Z")

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Hi all, how are you? I've seen that several nodes has status messages the usually are diplayed under its respcective node but, I need to know what status has a node and what they means, For example, the modbus-getter n…

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## [How to connect a ttl to rs485 generic adapter with a raspberry pi 4 and node red (modbus)](https://discourse.nodered.org/t/how-to-connect-a-ttl-to-rs485-generic-adapter-with-a-raspberry-pi-4-and-node-red-modbus/69702)

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**Author:** [@vra](https://discourse.nodered.org/u/vra)\
**Replies:** 3\
**Last updated:** [28 October 2022 11:06 UTC](https://discourse.nodered.org/t/how-to-connect-a-ttl-to-rs485-generic-adapter-with-a-raspberry-pi-4-and-node-red-modbus/69702 "2022-10-28T11:06:41Z")

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Hi all, how are you? I'm trying to connect a raspberry pi to a motogenerator controller through rs485 using a generic ttl to rs485 converter, this converter has 4 input pins on the ttl side: DE, RE, DI and RO, DE and RE…

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## [Orphaned directory?](https://discourse.nodered.org/t/orphaned-directory/69716)

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**Author:** [@Paul-Reed](https://discourse.nodered.org/u/Paul-Reed)\
**Replies:** 2\
**Last updated:** [28 October 2022 09:26 UTC](https://discourse.nodered.org/t/orphaned-directory/69716 "2022-10-28T09:26:16Z")

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In my node-RED user directory, I have a lib directory, which contains a empty flows directory. It contains no files, and not sure of it's purpose. Is it some garbage that I've accumulated over the years, something that…

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## [Anyone use the node-red-contrib-unifi node?](https://discourse.nodered.org/t/anyone-use-the-node-red-contrib-unifi-node/69440)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 4\
**Last updated:** [28 October 2022 07:57 UTC](https://discourse.nodered.org/t/anyone-use-the-node-red-contrib-unifi-node/69440 "2022-10-28T07:57:33Z")

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I've just got myself a Ubiquiti EDGE router. (Unifi family) Can this node control it? I am wanting to know if I can enable/disable devices on my network from being able to connect to the internet. Kind of like Parent…

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## [MSSQL-PLUS node will not let the flow to do anything](https://discourse.nodered.org/t/mssql-plus-node-will-not-let-the-flow-to-do-anything/69683)

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**Author:** [@KevinPamu](https://discourse.nodered.org/u/KevinPamu)\
**Replies:** 4\
**Last updated:** [28 October 2022 06:34 UTC](https://discourse.nodered.org/t/mssql-plus-node-will-not-let-the-flow-to-do-anything/69683 "2022-10-28T06:34:38Z")

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I had this flow running on a windows machine for quiet sometime now. The machine I was running this on crashed and I had a copy of the flows I was using. When I put everything back, the version of node-red is newer but …

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## [Problem with function node analysing OSC](https://discourse.nodered.org/t/problem-with-function-node-analysing-osc/69690)

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**Author:** [@jhoepffner](https://discourse.nodered.org/u/jhoepffner)\
**Replies:** 6\
**Last updated:** [28 October 2022 06:31 UTC](https://discourse.nodered.org/t/problem-with-function-node-analysing-osc/69690 "2022-10-28T06:31:33Z")

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Hello, I am a newby with Node-Red. I search to implement a simple function. Info is coming from TouchDesigner through OSC (udp) as: {"address":"/videoShow","args":0} I want to change property of group with args (two…

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## [Cycle time calculation](https://discourse.nodered.org/t/cycle-time-calculation/69227)

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**Author:** [@Vik](https://discourse.nodered.org/u/Vik)\
**Replies:** 1\
**Last updated:** [28 October 2022 05:47 UTC](https://discourse.nodered.org/t/cycle-time-calculation/69227 "2022-10-28T05:47:12Z")

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@Frida @Steve-Mcl Continuing the discussion from Flow to get output from a logical sequence of events: I am working on this flow to get the duration of each state. I need to get: A) the duration when D2 is 1, B) t…

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## [How to make flow wait for response of actionable notification / no retrigger](https://discourse.nodered.org/t/how-to-make-flow-wait-for-response-of-actionable-notification-no-retrigger/69465)

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**Author:** [@plimplamm](https://discourse.nodered.org/u/plimplamm)\
**Replies:** 4\
**Last updated:** [28 October 2022 02:48 UTC](https://discourse.nodered.org/t/how-to-make-flow-wait-for-response-of-actionable-notification-no-retrigger/69465 "2022-10-28T02:48:40Z")

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Hi everyone. I have a flow that sends out an actionable notification (iOS) to ask whether I want to start the washing machine when solar production is up and consumption is down. Currently, the flow retriggers and keeps…

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## [Subflow: errors not being caught by catch node](https://discourse.nodered.org/t/subflow-errors-not-being-caught-by-catch-node/69403)

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**Author:** [@Matt.L](https://discourse.nodered.org/u/Matt.L)\
**Replies:** 8\
**Last updated:** [27 October 2022 23:46 UTC](https://discourse.nodered.org/t/subflow-errors-not-being-caught-by-catch-node/69403 "2022-10-27T23:46:20Z")

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This is a subflow I put together to make it easier for me to log data to google sheets. I can share more if anyone is interested in what's going on here. The problem I'm trying to debug is why "append catch" node is …

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## [Client network socket disconnected before secure TLS connection was established](https://discourse.nodered.org/t/client-network-socket-disconnected-before-secure-tls-connection-was-established/69581)

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**Author:** [@fabiobeoni](https://discourse.nodered.org/u/fabiobeoni)\
**Replies:** 5\
**Last updated:** [27 October 2022 18:46 UTC](https://discourse.nodered.org/t/client-network-socket-disconnected-before-secure-tls-connection-was-established/69581 "2022-10-27T18:46:19Z")

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Hi, I am experiencing the error message Client network socket disconnected before secure TLS connection was established, when I open the Editor UI (okay) and I click on "Sign In" button (error). I run nodered as follow…

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## [How to sum 2 saved context values](https://discourse.nodered.org/t/how-to-sum-2-saved-context-values/69430)

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**Author:** [@Walt\_Dod](https://discourse.nodered.org/u/Walt_Dod)\
**Replies:** 22\
**Last updated:** [27 October 2022 17:56 UTC](https://discourse.nodered.org/t/how-to-sum-2-saved-context-values/69430 "2022-10-27T17:56:21Z")

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Hi Paul, If I may ask, can you give me some hint or a link about the best way to add dynamically the 2 stored kWh flow values ? Regards, W. Envoyé: samedi 22 octobre 2022 à 10:29

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## [URL problem with SSL certificate on CentOS7](https://discourse.nodered.org/t/url-problem-with-ssl-certificate-on-centos7/69569)

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**Author:** [@Fabien1](https://discourse.nodered.org/u/Fabien1)\
**Replies:** 17\
**Last updated:** [27 October 2022 16:54 UTC](https://discourse.nodered.org/t/url-problem-with-ssl-certificate-on-centos7/69569 "2022-10-27T16:54:52Z")

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Hello, We've been working on data acquisition with Node-RED on this website : https://rucheconnectee.mc. The GNU/Linux OS used is CentOS7. I had a self-signed SSL certificate to encrypt the website, but I had security…

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## [How to obtain a sequential out, from multiple outputs in a function node](https://discourse.nodered.org/t/how-to-obtain-a-sequential-out-from-multiple-outputs-in-a-function-node/69575)

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**Author:** [@lumanga](https://discourse.nodered.org/u/lumanga)\
**Replies:** 3\
**Last updated:** [27 October 2022 15:41 UTC](https://discourse.nodered.org/t/how-to-obtain-a-sequential-out-from-multiple-outputs-in-a-function-node/69575 "2022-10-27T15:41:03Z")

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Dear all, I'm really in trouble to write the easiest and solid and reliable code to do this job: I have an Injecton node that every 1 sec. gives the output. I need to write the code ( into the function node, or othe/o…

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## [Countdown to time of day](https://discourse.nodered.org/t/countdown-to-time-of-day/69647)

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**Author:** [@coleg06](https://discourse.nodered.org/u/coleg06)\
**Replies:** 7\
**Last updated:** [27 October 2022 14:58 UTC](https://discourse.nodered.org/t/countdown-to-time-of-day/69647 "2022-10-27T14:58:23Z")

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Hi, I'm trying to have a dashboard icon trigger different presets of "countdown to times of day". All of the times are the same, but would be triggered at different times. I have the setup working (see the picture for d…

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## [How to redirect to another address?](https://discourse.nodered.org/t/how-to-redirect-to-another-address/68761)

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**Author:** [@Hitman2847](https://discourse.nodered.org/u/Hitman2847)\
**Replies:** 16\
**Last updated:** [27 October 2022 14:54 UTC](https://discourse.nodered.org/t/how-to-redirect-to-another-address/68761 "2022-10-27T14:54:48Z")

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So I'm pretty new to making a website and I'm still learning, I have designed a login page so far and have written two nodes for this page, one for generating an authorization-token, another to check the validity of a t…

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## [Second Pi won't connect to MQTT on First Pi](https://discourse.nodered.org/t/second-pi-wont-connect-to-mqtt-on-first-pi/69674)

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**Author:** [@Richard238](https://discourse.nodered.org/u/Richard238)\
**Replies:** 2\
**Last updated:** [27 October 2022 13:53 UTC](https://discourse.nodered.org/t/second-pi-wont-connect-to-mqtt-on-first-pi/69674 "2022-10-27T13:53:38Z")

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I have two Pi's, one as MQTT broker. This can connect MQTT-out just fine, with MQTT server set to localhost, or IP address On Pi2, I cannot get the node-red MQTT-in node to connect to Pi1 What have I missed here? Tha…

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## [How to send E-mails with Gmail after google less secure app access no longer available](https://discourse.nodered.org/t/how-to-send-e-mails-with-gmail-after-google-less-secure-app-access-no-longer-available/69665)

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**Author:** [@Stanny](https://discourse.nodered.org/u/Stanny)\
**Replies:** 4\
**Last updated:** [27 October 2022 13:13 UTC](https://discourse.nodered.org/t/how-to-send-e-mails-with-gmail-after-google-less-secure-app-access-no-longer-available/69665 "2022-10-27T13:13:08Z")

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hello everyone I tried to send a mail via Node-Red to a Gmail Email address. But then I found out that google less secure app access is no longer available since May 30th, 2022. So because of this you keep getting an er…

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## [Settings.js location in Dietpi and entry for contextStorage](https://discourse.nodered.org/t/settings-js-location-in-dietpi-and-entry-for-contextstorage/69667)

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**Author:** [@manfred9999](https://discourse.nodered.org/u/manfred9999)\
**Replies:** 1\
**Last updated:** [27 October 2022 12:25 UTC](https://discourse.nodered.org/t/settings-js-location-in-dietpi-and-entry-for-contextstorage/69667 "2022-10-27T12:25:23Z")

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Hello I like to enable context data writing to file. I found the following entry for the settings.js file 1 2 3 4 5 contextStorage: { default: "memoryOnly", memoryOnly: { module: 'memory' }, file: { module: 'lo…

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## ["Stand-alone" Flow File Viewer](https://discourse.nodered.org/t/stand-alone-flow-file-viewer/69669)

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**Author:** [@rko](https://discourse.nodered.org/u/rko)\
**Replies:** 0\
**Last updated:** [27 October 2022 12:00 UTC](https://discourse.nodered.org/t/stand-alone-flow-file-viewer/69669 "2022-10-27T12:00:49Z")

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Has anybody worked on or at least thought about creating a flow file viewer? This might be (or is already?) a feature in flow forge. However, my idea of this viewer is more or less a "stand-alone thing" which lets you ex…

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## [How to use logstash from Elasticsearch to add a new field in a payload which is received from a MQTT node?](https://discourse.nodered.org/t/how-to-use-logstash-from-elasticsearch-to-add-a-new-field-in-a-payload-which-is-received-from-a-mqtt-node/69550)

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**Author:** [@Nirajan](https://discourse.nodered.org/u/Nirajan)\
**Replies:** 5\
**Last updated:** [27 October 2022 10:02 UTC](https://discourse.nodered.org/t/how-to-use-logstash-from-elasticsearch-to-add-a-new-field-in-a-payload-which-is-received-from-a-mqtt-node/69550 "2022-10-27T10:02:17Z")

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Hi Everyone, I am willing to use filter nodes from logstash to do some changes in a payload received from a MQTT subscriber node in node-red. I would like to check for a field with value greater than 1000 and then add …

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