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When the user presses the “UP” button on the console and the console passes that request along
to the lower control module via the serial communication through the data cable. The processor on
the lower control module then switches the 12VDC battery voltage to the lift motor windings as a
POSITIVE 12VDC.
When the user presses the “DOWN” button on the console and the console passes that request
along to the lower control module via the serial communication through the data cable. The
processor on the lower control module then switches the 12VDC battery voltage to the lift motor
windings as a NEGATIVE 12VDC.