The output of the combinator gives the sum total of all cargo loading or unloading orders in progress for the station. The very tick a train is dispatched for a new order to the station, that order is added to the output of this combinator, and it is removed as soon as the train leaves the station.
Is this true?
As far as I can tell, there's no output on my combinator set to Station Control mode. The provider combinator outputs the correct amounts when the train arrives, but I expect the Station Control combinator to output the amounts as soon as a train has been dispatched... And yes, I've tried it with the combinator touching the station, touching the provider combinator, and touching both at the same time.
From the docs:
Is this true?
As far as I can tell, there's no output on my combinator set to Station Control mode. The provider combinator outputs the correct amounts when the train arrives, but I expect the Station Control combinator to output the amounts as soon as a train has been dispatched... And yes, I've tried it with the combinator touching the station, touching the provider combinator, and touching both at the same time.