I need a code in PLC Ladder for 16 floor passenger elevator. The code should be able to move the Elevator up / down based on selections made on an HMI touch screen. Suppose the elevator is currently on floor 9 ( as is stored in a word register R0) and the calls registered are for floors 0, 3, 6,7, 11, 12 and 15 with 15 as top floor and 0 as ground floor. The calls are stored in Bits B0 to B15. In this case, the following bits are active Hi: B0, B3, B6, B7, B11, B12 and B15. So the first thing is to decide which direction the lift has to move (by using the Collective and selective principals)
Can someone help me in this? Thanks in advance.