The purpose of doing this project is to design and implement a
three floor elevator control system. Each floor was to have its own
illuminated push button to call the elevator to a demanded floor.
The elevator door was to be simulated with the use of a 12VDC
bench-top mounted motor that opened, stayed open, and reversed
after ten seconds at each floor after being called. A 12V DC motor
was used to hoist the elevator and IR sensors were used to indicate
when the elevator was at the floor in position to open. The entire
system included a master start-stop circuit to ensure that the
operation could be completely shut down for emergencies or repair.
The final aspect of this experiment was to intelligently organize
the ladder logic to make troubleshooting easier. To do this, all of
the subroutine jumps were placed in the second ladder and the
actual subroutines in its respective ladder.
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