Question

This pertains to PLC logic and writing PLC programs. It is required to use LogixPro software for the ladder program design. please either provide pictures or drawings of what the ladder program would look like, thank you!

Course Project Description Parking Garage Operations Process The process consists of a parking garage with an entrance and an exit door. The garage has 25 parking spaces. We assume the garage is empty at the beginning of the day. The parking garage manager starts the operation by pressing a NO pushbutton. As soon as the process starts, a green light turns on at the entrance of the garage indicating that parking space is available. The number of parking vehicles in the garage is constantly monitored as vehicles enter or exit the garage. To indicate that a vehicle has entered the garage, a NO pushbutton is pressed. Another NO pushbutton is pressed if a vehicle leaves the garage. If the number of parked vehicles in the garage is 23 or 24, the green light at the entrance is turned off and a yellow light flashes continuously at the rate of one second on and one second off. If the garage is full, the flashing yellow light turns off and a red light turns on indicating that the garage is FULL. At this point if one or two vehicles leave the garage, the red light turns off and the flashing yellow light turns on. If additional vehicles leave the garage, the flashing yellow light turns off and the green light is turned on. At the end of the day, a NC pushbutton is pressed to stop the process and reset all counters. Parts Needed: 1. Three NO pushbuttons as following: • One to start the process, at address II. • One to represent a car entering the garage every time it is pressed, at address 13. • One to represent a car exiting the garage every time it is pressed at address 14. 2. One NC pushbutton to stop the process, at address 12. 3. One green LED at address 00. 4. One yellow LED at address 01. 5. One red LED at address 02. 6. Logix Pro PLC simulation software. Inputs IO: 11: 12: 13: NO START pushbutton NC STOP pushbutton NO pushbutton indicating vehicles entering the garage NO pushbutton indicating vehicles exiting the garage Outputs 00: 01: 02: Green LED Yellow LED Red LED

Answer 1

[PLEASE SHARE YOUR DOUBT IN COMMENTS BELOW. PLEASE RATE. THANK YOU.]

=--------------

ANSWER:

T4:0/DN B3:0/0 000 START STOP INTERNAL BINARY BIT B3 0/0 INTERNAL BINARY BIT 001 ga 0:210 INTERNAL BINARY BIT RED LIGHT green light B3:0/0 12 002 INTERNAL BINARY BIT ENTRY PB -CTU Count Up (CU) Counter 05:0 Preset 0 HDN Accum 0 ENTRY COUNTER 003 INTERNAL BINARY BIT EXITPB CTU Count Up -CU Counter C5:1 Preset 0 CDN Accum 0 EXIT COUNTER 004 -SUB Subtract Source C5:0.ACC Source B C5:1.ACC Dest N7:0 005 GEQ Getr Than or Eal Source N7:0 로 RED LIGHT -TON Timer On Delay Timer Time Base Preset Accum CEN T4:0 0.1 (DN) 10 0 Source B 23 TOTAL CAR IN PARKING T4:0/EN 14:0/DN 0:21 006 YELLOW LIGHT 007 -ΤΟΝ Timer On Delay FEN T4:1 0.1 -CDN 10 Time Base Preset Accum 0:22 008 -EQU Equal Source N7:0 RED LIGHT Source B 25 TOTAL CAR IN PARKING 009 끝 STOP C5:0 CRES) ENTRY COUNTER C5:1 RES EXIT COUNTER 010 (END)