This section is designed to query elevator height for the tray, set the tray height and adjust the elevator’s position.
Query cargo lane height: Input the tray number to query current tray height of elevator.
Set the cargo lane height: Input the tray number then set the height for elevator.
Elevator move to: Change the elevator position to the tray number which you input.
Elevator start point: Change the elevator position to start point.
Move to side door: Change the elevator position to side door.
