AbstractThe accessibility, Access.Readable for simulation outputs or Access.Writable for simulation inputs.
Whether there are any subscribers.
The data type.
AbstractvalueSubscribes to be notified when an event occurs.
The callback function.
Unsubscribes.
The callback function.
True if the subscription was canceled, false otherwise.
Signal.
A signal wraps a value and notifies subscribers when the value is set.
Remarks
Subscribers are not notified unless the value is set to a different value. It is strongly recommended to subscribe to signals through Component.subscribe. Singals can be bound to PLC tags/variables through the IO Browser.