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node-red-nodes/function/rbe/README.md
2015-01-23 13:34:10 +00:00

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node-red-node-rbe
=================
A <a href="http://nodered.org" target="_new">Node-RED</a> node that provides provides report-by-exception (RBE) and deadband capability.
Install
-------
Run the following command in the root directory of your Node-RED install
npm install node-red-node-rbe
Usage
-----
A simple node to provide report by exception (RBE) and deadband function - only passes on data if it has changed.
###RBE mode
Outputs the **msg** if the **msg.payload** is different to the previous one. Works on numbers and strings. Useful for filtering out repeated messages of the same value. Saves bandwidth, etc...
###Deadband mode
In deadband mode the incoming payload should contain a parseable *number* and is
output only if greater than + or - the *band gap* away from the previous output.
Will accept numbers, or strings like "18.4 C" or "$500"