Question

e counter resets to O and continues to cumulate counts. reset pushbutton is provided to reset the unter manually te a program that will increment a counter's mulated value 1 count every 60 s. A second nter's accumulated value will increment I nt every time the first counter's accumulated e reaches 60. The first counter will reset when accumulated value reaches 60, and the second nter will reset when its accumulated value ches 12 ite a program to implement the process illus- ted in Figure 8-45. A company that makes elec- nic assembly kits needs a counter to count and trol the number of resistors placed into each Write a program to implement the box-stacking process illustrated in Figure 8-46. This applica tion requires the control of a conveyor belt that feeds a mechanical stacker. The stacker can stack various numbers of cartons of ceiling tile onto each pallet (depending on the pallet size and the preset value of the counter). When the required number of cartons has been stacked, the conveyor is stopped until the loaded pallet is removed and an empty pallet is placed onto the loading area. photoelectric sensor will be used to provide co pulses to the counter after each carton passes In addition to a conveyor motor start/stop s a remote reset button is provided to allow the operator to reset the system from the forklhit 13. station an empty pallet is placed onto the loading re Cartons of ceiling tile Reflector Stacker Pallet Sensor Fiaure 8-46 Control process for Problem 13

Answer 1

PLC Ladder Simulator I Normal mode 0.0 10.1 MO.0 M0.0 M0.0 CO:DN 00.0 2 CTU 10.2 CO:DN 3 DN Count Up Counter Preset Accum CO 0.3 CO:CU RESET CU 00.0 00.1 00.2 00.3 00.4 00.5 00.6 0.0 0.2 0.3 0.4 0.5 0.6

PLC Ladder Simulator I Normal mode 0.0 0.1 MO.0 M0.0 M0.0 CO:DN 00.0 2 CTU 0.2 CO:DN 3 DN Count Up Counter Preset Accum CO 10 0 0.3 CO:CU RESET CU 00.0 00.1 00.2 00.3 00.4 00.5 00.6 0.0 0.3 0.4 0.5 0.6

PLC Ladder Simulator I Normal mode 10.0 10.1 M0.0 M0.0 M0.0 CO:DN 00.0 2 CTU 10.2 CODN 3 DN Count Up Counter Preset Accum CO 10 0.3 CO.CU RESET CU 00.0 00.1 00.2 00.3 00.4 00.5 00.6 0.0 10.2 0.3 10.4 0.5 0.6

PLC Ladder Simulator I Normal mode 0.1 M0.0 0.0 M0.0 CO:DN 00.0 MO.0 CTU CO:DN 10.2 DN Count Up Counter Preset Accum CO CO:CU 0.3 CU RESET 00.2 00.3 00.4 00.5 00.6 00.0 00.1 0.2 0.3 0.4 0.5 0.6 0.0

PLC Ladder Simulator I Normal mode 0.0 10.1 M0.0 M0.0 M0.0 CO:DN 00.0 2 CTU 10.2 CO:DN 3 DN Count Up Counter Preset Accum CO 0.3 CO:CU RESET CU 00.0 00.1 00.2 00.3 00.4 00.5 00.6 0.0 0.2 0.3 0.4 0.5 10.6

PLC Ladder Simulator I Normal mode 0.0 0.1 M0.0 M0.0 M0.0 CO:DN 00.0 2 10.2 CTU CO:DN 3 DN Count Up Counter Preset Accum CO 10 0 10.3 Co:CU RESET CU 00.0 00.1 00.2 00.3 00.4 00.5 00.6 10.0 0.1 I0.2 0.3 0.4 0.5 0.6

top pauth button 1o. 3) Conten 4 Reset hutten lc.3