Transformation MODBUS binding

[rossko57]

Javascript based transform for exactly this purpose described here, just a different means to same end.

Modbus support for transformations, roller shutter items, read-only items, write-only items, and others

I had a chance to play, my first grown-up transform To invert the sense of a Modbus discrete input: Create the following javascript, call it mbinvert.js (placed in /configurations/transform in OH1) // function to invert Modbus binary states // input variable i contains data passed by OpenHAB binding (function(i) { var t = i ; // allow Undefined to pass through if (i == 'OPEN') { t = 'CLOSED' ; } else if (i == 'CLOSED') { t = 'OPEN' ; } return t ; …