groov Read Node - Introduction

Overview

In thefirst example, we saw how to configure thegroovView project and Data Store and then read a Data Store tag just to see that everything was working correctly.

Read a Tag Connected to a Gadget

1. Go back to the simple Node-RED flow from theprevious section.
   • If you need to recreate the flow, it is three nodes connected:
     1. A default Inject node, which is connected to a:
     2. groovView Read node, reading a variable named “integerTag1”, which is connected to:
     3. A default Debug node.
     4. Deploy the flow and test it out.
2. In thegroovView project, create a Text Input gadget for the “integerTag1” tag.
3. Go togroovView, and change the value of the tag.
4. Back in Node-RED, click the Inject node’s button (the square on the left-side of the node).
5. In the Debug tab, you should see an entry with the tag’s new value.

Further Help

Node-RED nodes include help documentation within Node-RED itself. For detailed help on thegroovRead node, select the node in the node palette or one in a flow, and the help will be displayed in the Info tab.

Next Step

Continue on towriting Data Store tags.