Reference Element
The ReferenceElement allows creating actions by comparing an incoming value with a reference value.
The output of comparing the 2 values can be used to switch a device on or off. This can be used e.g. to control heating or light based on the actual temperature or light brightness.
Element Configuration
value - The input value for the comparison typically coming from a sensor.
reference - The reference input value for the comparison typically coming from a value element.
invert - The output value can be logically inverted by setting this property to true. Default is false.
onReference -These actions are emitted when the value goes across the reference value.
onHigh - These actions are send when the value is above the reference value.
The value given in the actions is 1.
onLow - These actions are send when the value is below the reference value.
The value given in the actions is 0.
Configuration Example
This example shows how to configure this element:
{
"reference": {
"temp": {
"title": "Heater Control",
"onreference": "digitalout/heater?value=$v",
"invert": "true",
"value": "1"
}
...
}
}Element State
The following properties are available with the current values at runtime
active - Is set to true when the element is active.
value - Current output value of the element.
{
"reference/temp":{
"active":"true",
"value":"0",
"reference":"22.00"
}
}