Transform contact state in modbus binding

Add-ons Bindings
1

Hello, i need help with transform OPEN to CLOSE and CLOSE to OPEN in modbus binding.
My modbus.things

Bridge modbus:serial:R3 [ port="/dev/ttyUSB2", id=3, baud=9600, stopBits="1", parity="none", dataBits=8, connectMaxTries=1, receiveTimeoutMillis=1000 ] {
    Bridge poller R3_INPUT [ start=0, length=8, refresh=1000, type="discrete", maxTries=1 ] { 
               Thing data I3_0 [ readStart="0", readValueType="uint8"] 
}}

home.items


Contact         Window7       "Window [MAP(cs.map):%s]"            {channel="modbus:data:R3:R3_INPUT:I3_0:contact"}

In cs.map i have translate to CZECH.

Thanks

2

You can either use an incoming value transformation (i.e. via map) on the channel which will change the values the item receives or a state description on the item which would only be visual though.
I think you would be looking for the first option.

3

Using the map is only visual, this is not the solution for me

4

There is an invert transformation example in the docs

5

If you use the incoming value transformation on the channel it is not only visual as it transforms the value before it hits the item.

6

things/modbus.things

        Thing data I3_2 [ readStart="2", readValueType="bit", readTransform="JS:modbus_contact.js"]

transform/modbus_contact.js

(function(inputData) {
    var out = inputData ;
    if (inputData == 'OPEN') {
        out = 'CLOSED' ; 
    } else if (inputData == 'CLOSED') {
        out = 'OPEN' ;
    }
    return out ;     
})(input)

its ok? when add ', readTransform=“JS:modbus_contact.js” ’ to things, input is not reading…

7

As it tells you in the binding docs

The transformation receives the extracted number as input.

and you can see the example in the docs deals with numbers 0/1

The example uses other values as well because it can be used for read and write.