The trigger event variables available to a trigger when it executes are variables that relate to the current execution of a trigger, such as the data value of a monitored device variable for a data event trigger or the name of a device for a device state change event trigger.
The trigger event variables are either input event variables or output event variables (but not both):
- Input variables can be used for the source variable in an action, but cannot be changed.
- Output variables can be used for the destination variable in an action. They can be changed and be used to pass information back to the component that caused the trigger to execute.
An example of the device state change event type shows
the available input event variables available as the source
of a Set action:
For this example of the device state change event type,
there are no output event variables
The specific trigger event variables information is covered in the section for each trigger event type in the Trigger event type reference.