For setting the train you need only
Resource verify rule (RVR)and
-Driver schedule rule (as a child)
It's good to use one RVR for coalmine and second for powerstation. Train will start when coalmine will have enough coal (exceed amount) and powerstation have need for coal(fall below amount). So you must set both RVR and drivers command in driver schedule rule. You don't drive this train manualy, he do this automatic.
Again
resource verify rule (for coalmine)
-resource verify rule (for powerstation)
--driver schedule rule
For this task you don't need inputtable at all.
Resource verify rule (RVR)and
-Driver schedule rule (as a child)
It's good to use one RVR for coalmine and second for powerstation. Train will start when coalmine will have enough coal (exceed amount) and powerstation have need for coal(fall below amount). So you must set both RVR and drivers command in driver schedule rule. You don't drive this train manualy, he do this automatic.
Again
resource verify rule (for coalmine)
-resource verify rule (for powerstation)
--driver schedule rule
For this task you don't need inputtable at all.