# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=897

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

**Page:** 898

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## [Opc us reconnect](https://discourse.nodered.org/t/opc-us-reconnect/9936)

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**Author:** [@Soft4](https://discourse.nodered.org/u/Soft4)\
**Replies:** 8\
**Last updated:** [9 April 2019 14:57 UTC](https://discourse.nodered.org/t/opc-us-reconnect/9936 "2019-04-09T14:57:37Z")

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How can I reconnect the opcua listener when my PLC is started? I have a connection, if now my PLC is switched off, the connection is lost. How do I get it back without restarting node-red.

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## [Need to check if node is active](https://discourse.nodered.org/t/need-to-check-if-node-is-active/9940)

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**Author:** [@General\_Failure](https://discourse.nodered.org/u/General_Failure)\
**Replies:** 7\
**Last updated:** [9 April 2019 13:53 UTC](https://discourse.nodered.org/t/need-to-check-if-node-is-active/9940 "2019-04-09T13:53:05Z")

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Hi, I'm trying to check if node-red is active and then, if not, restart it. I'm using a switch to see if the msg is equal to "active". Different debug messages should show how it's working, to be later replaced by an e…

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## [Best way to collect, store and retrieve a small (10-25) set of sensor values](https://discourse.nodered.org/t/best-way-to-collect-store-and-retrieve-a-small-10-25-set-of-sensor-values/9827)

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**Author:** [@hominidae](https://discourse.nodered.org/u/hominidae)\
**Replies:** 11\
**Last updated:** [9 April 2019 13:16 UTC](https://discourse.nodered.org/t/best-way-to-collect-store-and-retrieve-a-small-10-25-set-of-sensor-values/9827 "2019-04-09T13:16:57Z")

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Hi Folks, for my project I need to be able to go back in time and access a small set of previously collected senor data values. The set is quite small, about 10 - 25 values, The values are collected over a period of t…

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## [How to stop one node?](https://discourse.nodered.org/t/how-to-stop-one-node/9931)

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**Author:** [@Gnork](https://discourse.nodered.org/u/Gnork)\
**Replies:** 1\
**Last updated:** [9 April 2019 13:15 UTC](https://discourse.nodered.org/t/how-to-stop-one-node/9931 "2019-04-09T13:15:40Z")

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Hello! When I click the deploy button for modified nodes, it writes “Stopping modified nodes” and “Starting modified nodes” in the terminal. Can I do this "stop/start" manually for any node?

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## [Update to the newst version](https://discourse.nodered.org/t/update-to-the-newst-version/9947)

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**Author:** [@JokinSegu](https://discourse.nodered.org/u/JokinSegu)\
**Replies:** 1\
**Last updated:** [9 April 2019 12:41 UTC](https://discourse.nodered.org/t/update-to-the-newst-version/9947 "2019-04-09T12:41:48Z")

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Can I update the newst version of Node-Red if I am using it from the IOT2000? How can I do it?

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## [Stuck splitting messages](https://discourse.nodered.org/t/stuck-splitting-messages/9847)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 11\
**Last updated:** [9 April 2019 11:44 UTC](https://discourse.nodered.org/t/stuck-splitting-messages/9847 "2019-04-09T11:44:29Z")

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I am using bigtimer and looking at output #2. example: {"payload":1,"reference":"DAYTIME:SUNRISE:SUNSET:744","topic":"status","state":"ON Auto","time":"05hrs 21mins","name":"Day Start/End","start":372,"end":1065,"dusk"…

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## [Node-red update screen from CLI](https://discourse.nodered.org/t/node-red-update-screen-from-cli/9917)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 3\
**Last updated:** [9 April 2019 10:48 UTC](https://discourse.nodered.org/t/node-red-update-screen-from-cli/9917 "2019-04-09T10:48:22Z")

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Most of my other machines when updating look nice. When updating one the screen doesn't have "tick" as it is going through the stages, but this: It is headless machine, but I am sure I set up the config stuff correctl…

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## [Rolling code for opening gate?](https://discourse.nodered.org/t/rolling-code-for-opening-gate/9906)

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**Author:** [@SuperNinja](https://discourse.nodered.org/u/SuperNinja)\
**Replies:** 2\
**Last updated:** [9 April 2019 07:43 UTC](https://discourse.nodered.org/t/rolling-code-for-opening-gate/9906 "2019-04-09T07:43:25Z")

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Hello everyone, I try to transmit / receive a coded message but that can not be reproduced, to open my gate, garage, door etc ... NodeRed runs on my RPI and runs my house. A 433MHz transceiver is connected to its seria…

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## [Varible times and variable results](https://discourse.nodered.org/t/varible-times-and-variable-results/9914)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 1\
**Last updated:** [9 April 2019 02:50 UTC](https://discourse.nodered.org/t/varible-times-and-variable-results/9914 "2019-04-09T02:50:32Z")

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Go get a cup of coffee, and try to relax. This is a doozy. Back back story: I have one RPI which is my MAIN machine which receives what I can best call telemetry fom the other machines. If they are compatible, they s…

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## [Raspberry pi 3 Model B node-red error](https://discourse.nodered.org/t/raspberry-pi-3-model-b-node-red-error/9894)

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**Author:** [@Kwonsoyeong](https://discourse.nodered.org/u/Kwonsoyeong)\
**Replies:** 7\
**Last updated:** [9 April 2019 01:52 UTC](https://discourse.nodered.org/t/raspberry-pi-3-model-b-node-red-error/9894 "2019-04-09T01:52:01Z")

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Hi Today, I want to use node-red and dashboard for Raspberry pi 3 Model B. I was only download node-js. And I am started node-red but I'm not saw palette menu. And I tried 'npm install node-red dashboard' but I saw …

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## [SUB FLOWS - something is going on](https://discourse.nodered.org/t/sub-flows-something-is-going-on/9851)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 6\
**Last updated:** [9 April 2019 01:22 UTC](https://discourse.nodered.org/t/sub-flows-something-is-going-on/9851 "2019-04-09T01:22:44Z")

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Hi again folks. Yet another problem has me stumped. I had/have messy flows for things and monitoring my network. One of the flows had a lot of nodes and a lot of repitative stuff. I got into the subflow mode and repl…

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## [FTP node on NR? Could we possibly know if the file transfer was successful or not?](https://discourse.nodered.org/t/ftp-node-on-nr-could-we-possibly-know-if-the-file-transfer-was-successful-or-not/9737)

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**Author:** [@KevinPamu](https://discourse.nodered.org/u/KevinPamu)\
**Replies:** 3\
**Last updated:** [8 April 2019 23:06 UTC](https://discourse.nodered.org/t/ftp-node-on-nr-could-we-possibly-know-if-the-file-transfer-was-successful-or-not/9737 "2019-04-08T23:06:13Z")

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I am running node-red on a windows 10 machine. I was wondering if anybody has tried SFTP on a windows machine and if there was anyway to check if the transfer of a file was successful or not? If you have tried the SFTP, …

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## [FTP node, activity log? is that something that is available?](https://discourse.nodered.org/t/ftp-node-activity-log-is-that-something-that-is-available/9816)

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**Author:** [@KevinPamu](https://discourse.nodered.org/u/KevinPamu)\
**Replies:** 6\
**Last updated:** [8 April 2019 23:05 UTC](https://discourse.nodered.org/t/ftp-node-activity-log-is-that-something-that-is-available/9816 "2019-04-08T23:05:44Z")

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I was trying to use the FTP node and check if there was a way I can track if the file has been sent or if it failed. Is this a possibility? Thanks in advance.

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## [Anyone using NodeRed as JSON API transformation tool?](https://discourse.nodered.org/t/anyone-using-nodered-as-json-api-transformation-tool/9821)

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**Author:** [@tony-shannon](https://discourse.nodered.org/u/tony-shannon)\
**Replies:** 8\
**Last updated:** [8 April 2019 22:12 UTC](https://discourse.nodered.org/t/anyone-using-nodered-as-json-api-transformation-tool/9821 "2019-04-08T22:12:45Z")

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Hi Kudos to the NodeRED team for their innovative thinking, this appears to be tech with great potential. Question please re anyone using NodeRED for JSON API transformation, eg with JSONata? See related issue here; h…

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## [Compare values of two columns of a large excel file using Node-Red](https://discourse.nodered.org/t/compare-values-of-two-columns-of-a-large-excel-file-using-node-red/9862)

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**Author:** [@aryans14](https://discourse.nodered.org/u/aryans14)\
**Replies:** 4\
**Last updated:** [8 April 2019 21:40 UTC](https://discourse.nodered.org/t/compare-values-of-two-columns-of-a-large-excel-file-using-node-red/9862 "2019-04-08T21:40:15Z")

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Hello, I have played around Node-Red for getting excel file from the disk and displaying its values in the HTTP response object. The source Excel file contained only 10 to 15 records. I have an excel file which contains…

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## [MQTT messages - feasability question](https://discourse.nodered.org/t/mqtt-messages-feasability-question/9846)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 14\
**Last updated:** [8 April 2019 21:34 UTC](https://discourse.nodered.org/t/mqtt-messages-feasability-question/9846 "2019-04-08T21:34:11Z")

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(I know: stupid question. But here goes.) I'm double checking myself as I am still not 100% sure. I have (or will have) devices connected which will want to know the time. They may not need to know it every second …

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## [Modbus serial port msg : PortNotOpenError "PortNotOpenError: Port Not Open"](https://discourse.nodered.org/t/modbus-serial-port-msg-portnotopenerror-portnotopenerror-port-not-open/9899)

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**Author:** [@hathemi](https://discourse.nodered.org/u/hathemi)\
**Replies:** 8\
**Last updated:** [8 April 2019 21:23 UTC](https://discourse.nodered.org/t/modbus-serial-port-msg-portnotopenerror-portnotopenerror-port-not-open/9899 "2019-04-08T21:23:44Z")

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i'am trying to read data using serial port, but i always get this error "msg : PortNotOpenError "PortNotOpenError: Port Not Open" ". How can i fix it ?? \[{"id":"fadac826.dbf338","type":"modbus-flex-getter","z":"ab90743…

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## [\[A bit Off Topic\] Grafana 6.1.0 on mobile device](https://discourse.nodered.org/t/a-bit-off-topic-grafana-6-1-0-on-mobile-device/9780)

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**Author:** [@Colin](https://discourse.nodered.org/u/Colin)\
**Replies:** 14\
**Last updated:** [8 April 2019 21:20 UTC](https://discourse.nodered.org/t/a-bit-off-topic-grafana-6-1-0-on-mobile-device/9780 "2019-04-08T21:20:22Z")

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Does anyone use Grafana on a mobile device? If so are you planning to upgrade to v6.1.0 which has just been released? I have done that and have the problem that in order to hide the side menu one now has to use the TV …

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## [Stop NodeRed from sending / processing when re-deployed](https://discourse.nodered.org/t/stop-nodered-from-sending-processing-when-re-deployed/9882)

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**Author:** [@Inso](https://discourse.nodered.org/u/Inso)\
**Replies:** 2\
**Last updated:** [8 April 2019 20:45 UTC](https://discourse.nodered.org/t/stop-nodered-from-sending-processing-when-re-deployed/9882 "2019-04-08T20:45:35Z")

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Hi, I have a few Smart Home one time events using NodeRed, f.e. a sleep timer, light toggle and so on. Problem is, as soon as I re-deploy after changing some stuff, all messages which have been incoming are re-processe…

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## [Help with JSONata grouping](https://discourse.nodered.org/t/help-with-jsonata-grouping/9629)

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**Author:** [@bakman2](https://discourse.nodered.org/u/bakman2)\
**Replies:** 2\
**Last updated:** [8 April 2019 16:38 UTC](https://discourse.nodered.org/t/help-with-jsonata-grouping/9629 "2019-04-08T16:38:28Z")

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This is not necessarily related to node-red, but the JSONata knowledge is here. I have the following object: { "dates": \[{ "datetime": "2018-06-01 08:14:00" }, { "datetime": "2018-06-01 08:16:00" }, { …

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## [Severe Lag with flows](https://discourse.nodered.org/t/severe-lag-with-flows/9883)

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**Author:** [@Tuckie](https://discourse.nodered.org/u/Tuckie)\
**Replies:** 2\
**Last updated:** [8 April 2019 10:16 UTC](https://discourse.nodered.org/t/severe-lag-with-flows/9883 "2019-04-08T10:16:13Z")

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Currently running a single box docker install of: home assistant 0.91.1 node red 0.20.5 with node-red-contrib-home-assistant-websocket 0.10.2 I've been running the same setup for a few months, when I suddenly started …

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## [Made a real ballsup, broke my NR](https://discourse.nodered.org/t/made-a-real-ballsup-broke-my-nr/9885)

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**Author:** [@kenkoknz](https://discourse.nodered.org/u/kenkoknz)\
**Replies:** 5\
**Last updated:** [8 April 2019 09:20 UTC](https://discourse.nodered.org/t/made-a-real-ballsup-broke-my-nr/9885 "2019-04-08T09:20:58Z")

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Hi All, HW:pi NR version: v0.20.5 I was doing a new install on pi to boot on usb stick instead of sd card. Successfully installed, I was going to test it out for a few days before transferring it to a usb ssd and have…

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## [Bluemix s7 node](https://discourse.nodered.org/t/bluemix-s7-node/9893)

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**Author:** [@JokinSegu](https://discourse.nodered.org/u/JokinSegu)\
**Replies:** 2\
**Last updated:** [8 April 2019 08:55 UTC](https://discourse.nodered.org/t/bluemix-s7-node/9893 "2019-04-08T08:55:39Z")

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I am working at bluemix cloud now and I can´t connect the PLC 1500 to the node red of bluemix,isn´t possble to connect from cloud?

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## [JavaScript equivalent of node-daemon?](https://discourse.nodered.org/t/javascript-equivalent-of-node-daemon/9879)

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**Author:** [@SirHumphreyAppleby](https://discourse.nodered.org/u/SirHumphreyAppleby)\
**Replies:** 4\
**Last updated:** [8 April 2019 07:29 UTC](https://discourse.nodered.org/t/javascript-equivalent-of-node-daemon/9879 "2019-04-08T07:29:55Z")

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Is there an equivalent to node-daemon that allows a persistent JavaScript function, where messages to be read and processed in a loop? Looking at the daemon source, it appears the input functionality is provided by node…

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## [MSSQL Windows Autentication](https://discourse.nodered.org/t/mssql-windows-autentication/9779)

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**Author:** [@Mario](https://discourse.nodered.org/u/Mario)\
**Replies:** 3\
**Last updated:** [8 April 2019 07:16 UTC](https://discourse.nodered.org/t/mssql-windows-autentication/9779 "2019-04-08T07:16:41Z")

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Hallo, First of all...sorry for my bad english but i will try my best. I‘ll try to commit on a MSSQL Database. But was i found is with Server Autentication. But i Need Windows Autentication. Is there an example of what…

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## [Not able to run node-red](https://discourse.nodered.org/t/not-able-to-run-node-red/9878)

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**Author:** [@hathemi](https://discourse.nodered.org/u/hathemi)\
**Replies:** 2\
**Last updated:** [7 April 2019 22:39 UTC](https://discourse.nodered.org/t/not-able-to-run-node-red/9878 "2019-04-07T22:39:17Z")

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how can i fix this error ???

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## [What am I doing wrong](https://discourse.nodered.org/t/what-am-i-doing-wrong/9513)

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**Author:** [@rburton](https://discourse.nodered.org/u/rburton)\
**Replies:** 37\
**Last updated:** [7 April 2019 21:58 UTC](https://discourse.nodered.org/t/what-am-i-doing-wrong/9513 "2019-04-07T21:58:57Z")

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I've started playing around with function nodes and get errors and solve them with google but this one is just giving me grief, I'm sure it's just a simple mistake but can't work it out I need advice thank you. if (msg.…

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## [Problem installing with npm the I2C modules - MCP23017](https://discourse.nodered.org/t/problem-installing-with-npm-the-i2c-modules-mcp23017/9860)

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**Author:** [@TiaPreve](https://discourse.nodered.org/u/TiaPreve)\
**Replies:** 6\
**Last updated:** [7 April 2019 16:01 UTC](https://discourse.nodered.org/t/problem-installing-with-npm-the-i2c-modules-mcp23017/9860 "2019-04-07T16:01:32Z")

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Hi there. I'm trying to install the palette node-red-contrib-mcp23017 in Node-Red. What it returns to me is just errors both installing via Node-Red or using the npm mode in the .node-red directory. I followed all the…

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## [Trying to run node-red on root](https://discourse.nodered.org/t/trying-to-run-node-red-on-root/9372)

<div class="topic-metadata">

**Author:** [@aihysp](https://discourse.nodered.org/u/aihysp)\
**Replies:** 11\
**Last updated:** [7 April 2019 13:41 UTC](https://discourse.nodered.org/t/trying-to-run-node-red-on-root/9372 "2019-04-07T13:41:39Z")

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Hi using Proxmox , with Ubuntu Container i am trying to setup node-red to run on startup using the below guide but i think my issue is that i am root user on this container, i really don't want to get into users an…

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## [\[SOLVED BY RESTART\]RBE node not appearing to work for Pushbullet](https://discourse.nodered.org/t/solved-by-restart-rbe-node-not-appearing-to-work-for-pushbullet/9864)

<div class="topic-metadata">

**Author:** [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Replies:** 4\
**Last updated:** [7 April 2019 13:38 UTC](https://discourse.nodered.org/t/solved-by-restart-rbe-node-not-appearing-to-work-for-pushbullet/9864 "2019-04-07T13:38:53Z")

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I'm trying out node-red-node-pushbullet and it works but seems to repeat any messsages I send from my 'droid phone 3 times So I thought - never mind -just stick an RBE node in the flow but it doesn't seem to work So I …

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