As a general rule, the properties PLCAddress**** will be directly associated to a property. For instance, PLCAddressVisible tells it to read a value from the PLC and put the resulting value in the Visible property.
For action/writing this rule does not apply. As you will note there is not Click property. By putting a valid PLC address in PLCAddressClick, it will write a value to that register based on the OutputType property.