What is Node-RED and How Can I Use it to Create IoT Applications?

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⌚Timestamps:
00:00 - Introduction
00:38 - What is Node-RED?
03:23 - Configure the Variables for the Application
06:32 - Build the Node-RED Application
09:09 - Function Node
10:37 - RBE Node
11:47 - Email Contents
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Node-RED is a graphical development tool that is quickly becoming the industry standard for developing Industrial IoT applications.
To get you up to speed with Node-RED, this video explains exactly what Node-RED is and shows you how easy it is to develop a powerful Industrial IoT application using Node-RED.
By the end of the video, we will have built a Node-RED application that analyzes data, processes the data, and sends an email alert when the data is within a critical range.
Node-RED is a graphical development tool that makes it easy to connect hardware devices, APIs, and online services to each other.
Node-RED was originally developed by IBM for internal use but was made open-source in 2016. Since then, it has been adopted by the automation industry as an easy way to create Industrial IoT applications that collect, process, and share data through the internet.
Node-RED makes it easy to develop Industrial IoT applications in two ways.
First, Node-RED ships with a huge number of pre-built nodes. As a developer, you can use these nodes in your applications to easily perform complex tasks such as sending data using the MQTT protocol, the Modbus/TCP protocol, or via email.
There are even nodes that let you publish data to online services such as Dropbox and Google Drive.
Currently, there are over two thousand nodes available for you to use in your Industrial IoT applications, and thanks to the tireless work of the open-source community, that number is steadily growing.
Second, Node-RED is a graphical development tool. Each node in an application is placed on a canvas and connected to other nodes. Each node in the application performs a specific task such as collecting data, processing data or sending data.
Once the application is deployed, a flow is triggered by an event and each node in the flow executes and passes data to the downstream node in the form of a message.
The event that triggers a flow is something that happens outside of the application like a hardware status change, a variable reaching a setpoint value, or a certain amount of time passing.
By placing and connecting nodes on the canvas, someone without deep knowledge of programming can create sophisticated Industrial IoT applications.
Now that we know what Node-RED is, let’s see how we can create an Industrial IoT application using Weidmüller’s u-mation platform.
The u-mation platform also ships with a built-in Node-RED editor making it an ideal choice for quickly and easily developing Industrial IoT applications.
Using u-create web, the web-based development environment for u-control controllers, we will build an application that sends an email alert to maintenance technicians when a process parameter reaches a critical level.
When building the application, we will see how to collect, process, and send data from a control system using Node-RED.
Many companies, including Boreal Light, are using u-mation and Node-RED to retrieve data from machines deployed around the world.
The data retrieved from these machines allows engineers based at the company headquarters to analyze and optimize the performance of the machines remotely leading to higher productivity and reduced costs.
@WeidmuellerGlobal
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[@gruzuser544]

As a young Automation Engineer I really enjoy this video. There was no such knowledge at the university, please more of this type of content. Peace from 🇵🇱✌🏼

[@realpars]

Thanks a lot for your support!

[@Kurogane-el2vq]

Always good and simple content from Realpars. Quality Videos. I have been using Node Red for over a month now. Just watching this video , I learned several good points that should be take note for Node Red programmings.

[@realpars]

Much appreciated!

[@inothome]

Yeah, Node-RED is pretty awesome!! I have some IoT sensors in Vietnam and the US and all report back to an Influx DB and graph it with Grafana. Using NR to poll and process the data. Super short learning curve too!

[@realpars]

That's amazing! Thanks for sharing.

[@kathitpatel2707]

Hey team realpars, I must say that your videos are of the top quality and it is easy to understand for a beginner like me. Can you please make a playlist for the iOt and cloud

[@realpars]

Thanks a lot for your kind support and feedback! Very happy to read that. Regarding your suggestion about the playlist, I will happily go ahead and pass this on to our team.

[@BrianThomas]

Crazy high quality video tutorial. This video alone made me subscrib to this channel.

[@realpars]

Thank you so much, Brian! We're very happy to hear that

[@marcfruchtman9473]

Thanks for the review.

[@realpars]

Our pleasure!

[@syufrijal]

Amazing...Node red can be used to create IoT applications

[@IngDzib]

Thank you!

[@realpars]

You're welcome!

[@ProfesorMora]

Excellent Video

[@realpars]

Glad you enjoyed it!

[@PLCTrainingforBeginners]

Thanks so much

[@realpars]

You're welcome!

[@adnanjayousi9140]

Thanks for the video, does u-control platform support bi-directional MQTT protocol via Node-RED ?

[@realpars]

Hi Adnan, Thank you for your question! U-control has full support for the MQTT protocol and comes with some MQTT nodes pre-installed. If those pre-installed nodes aren't enough to meet your application requirements, you can always install additional nodes. Hope this helps

[@beans4gas]

Wow. Nice.

[@realpars]

Thank you!

[@calvinaizumiramadhan2685]

thank for the insight real pars.. can you tell me the product type of weidmuller?

[@realpars]

Hi there, This video was recorded with a UC20-WL2000-AC controller. This controller is included in the Weidmueller u-Control starter kit. You can find more information about the starter kit here: catalog.weidmueller.com/procat/Product.jsp;jsessionid=FAB04176328075AF3080D9F33B8166F8?productId=(%5b2666080000%5d)&page=Product Happy learning!

[@TomiBorchert]

javascript it seems. im really amazed not all siemens plc have https support for get and post. at least. but ssh, ftp also are welcome. i cant wait till i can program plc with php :D got my own website, remote host. i can use it as a firewall and dataformatter, then i can create my own routes for plc. to fetch anything in any form. at moment i must rely on esp32 to signal plc what to do.

[@DAPITANVergilP]

good day sir!! can i ask for help in implementing the node-red dashboard to a website? i find it very difficult.

[@realpars]

Thanks for your comment, Dapitan! I will happily pass this on to our course developers for a possible future video course. Thanks again for sharing and happy learning!

[@TheJoypool]

Can I use node-red to make a dashboard collecting data from a group of PLCs and analys the production data?

[@realpars]

Hi there, You can absolutely use Node-RED to gather and display production data. There are nodes available to communicate with PLCs (like node-red-contrib-modbus) and to display data (like node-red-dashboard). I can't comment on your specific use case since the details will depend on what PLCs you are using, what data you want to collect and analyse, and how all the devices are networked, but Node-RED is generally a reliable and low-cost solution for collecting and displaying production data. Hope this helps!

[@yakikadafi6189]

This is amazing but there’s a problem 😢 I don’t know how to write Java script codes is there a way to master red node without being involved in Java headache 🤦‍♂️💔

Do we have to send the alarm email to only Brad Pitt and Tom Cruise ? (Just kidding :) I appreciate you to explain simply and effectively what NodeRed & IIoT and weidmüller u-create studio are...

[@nikolaydubina]

wow

[@olsinora2284]

Hi how are you can you use subtitles in Albania language please 😊

[@realpars]

Hi Olsi, Thanks for your comment! We currently only provide our course videos in English, you are always able to turn on the English subtitles as that might make it a bit easier for you.  Happy learning!

[@Flankymanga]

I didn't know Noide-Red was made by IBM.

[@niteshsharma6015]

Smart energy meter using node Red .