Learn how to log I/O data to text file in Node-RED

Posted by Janice Colmer on Mar 5, 2021 8:26:39 AM

New video released this week shows you how to turn groov RIO into a continuous datalogger

Another week means another video to add to your collection of Node-RED tools and technical tips. Last week our developer video host, Terry Orchard, demonstrated how to create Node-RED flows that interact with groov EPIC's embedded HMI server in "How to use the Node-RED package for groov View". This week, Terry is back in the studio with the groov RIO edge I/O module showing us how to save I/O data to a flat file.

You'll get step-by-step instructions for building a simple flow using groov I/O nodes to capture temperature data from groov RIO, log it to a text file, then store it to the internal fault-tolerant file system. The same method will work for other I/O types that groov RIO and EPIC support.
To follow along, you'll want to have your groov I/O nodes installed and configured already. (If you've missed this initial step, check out the "Setting up groov I/O nodes in Node-RED" video first.)


How to Log I/O Data to a Text File Using Node-RED

And remember, you can continue learning about Node-RED at OptoU, our free online training resource. You'll also find more advanced features covered on the Opto 22 Developer site or discussed in the OptoForums.

Happy learning!


Topics: Node-RED, developer, groov RIO

Written by Janice Colmer

Janice has worked at Opto 22 for more than 16 years and is part of the marketing team that strives to share new and relevant content with the automation industry. She enjoys books, camping, country music, and spending time with family and friends.
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