The LIFTER_VIEWL configuration is used to produce an animation
of the normal and abnormal operational sequences for the pallet handling example.

Normal operation   Jammed  Half-In  Crushed  Dropped  Half-Out  Fallen

0. Lifter at bottom position with stopper engaged. Feed conveyor is ON, waiting for pallet.	1. Pallet is loaded to feed conveyor.	2. Pallet advances to stopper position.	3. Pallet advances into lifter with stopper disengaged, feed conveyor motor ON and lifter motor ON in loading direction.
4. Lifter motor is disengaged, stopper is re-engaged, and lifter moves to top position. A new pallet may be loaded to the feed conveyor.	5. Lifter motor is turned ON in unloading direction and takeoff motor is turned ON. Old pallet moves to takeoff conveyor and new pallet is advancing.	6.Pallet moves to end of takeoff conveyor, lifter motor is disengaged, and lifter begins motion downward. Pallet has advanced to stopper position.	7. Pallet has moved off takeoff conveyor. Operation is ready to resume from step 2.

Jammed   Normal operation  Half-In  Crushed  Dropped  Half-Out  Fallen

This condition arises when the stopper is retracted with the feed conveyor motor ON with pallets present in both the lifter at the bottom position and the feed conveyor. It is indicated by showing the pallet at the loading position in a yellow color.

Half-In   Normal operation  Jammed  Crushed  Dropped  Half-Out  Fallen

This condition arises when the stopper is retracted with a pallet at the stopper position and the feed conveyor motor ON when the lifter motor is either disengaged or engaged in the unload direction. It is indicated by showing the pallet at the loading position in a yellow color.

Crushed   Normal operation  Jammed  Half-In  Dropped  Half-Out  Fallen

This condition arises when the pallet is in the Half-In position and the lifter is raised. It is indicated by showing the pallet at the "Crushed" position in a red color.

Dropped   Normal Operation  Jammed  Half-In  Crushed  Half-Out  Fallen

This condition arises when the stopper is retracted with a pallet at the stopper position and the feed conveyor motor ON when the lifter is not in the bottom position. It is indicated by showing the pallet at the loading position in a red color.

Half-Out   Normal operation  Jammed  Half-In  Crushed  Dropped  Fallen

This condition arises when the lifter is in the top position with a pallet present and the lifter motor is engaged to unload the pallet when the takeoff motor is OFF. It is indicated by showing the pallet at the unloading position in a yellow color.

Fallen   Normal operation  Jammed  Half-In  Crushed  Dropped  Half-Out

This condition arises when the pallet is in the Half-Out position and the lifter is lowered. It is indicated by showing the pallet at a "Fallen" position in a red color.