Carton Sealer Control. Implement the program for the following station that folds and seals a corrugated cardboard box. Figure P6. I shows two views of a station that folds and glues a corrugated cardboard box. Assume the open boxes are already filled with product. Upon startup, the conveyor motor is on until the photoelectric eye senses a box in the station. When a box is in the station, the conveyor is stopped, and the box is closed and sealed by the following procedure. Two pneumatic rams (FRONT and BACK) are extended to push the two end flaps down, a glue sprayer is activated for 1 second, and then two more pneumatic rams (LEFT and RIGHT) are extended to push the two side flaps down. After a 5 second wait, all of the pneumatic rams are Front Ram Left Ram AN PE1 (a) Right Ram AN Front Ram Glue Sprayer Back Ram PE1 Conveyor Right Ram PEI senses the front edge (b) Figure P6.1. Box sealing station; (a) view from left side; (b) view from front. Figure P6.1. Box sealing station; (a) view from left side; (b) view from front. retracted, and the conveyor motor is turned on. The sealed box is moved out of the station, and the conveyor continues to run until a new box moves into the station. Thus, the operation repeats. Assume there is a gap between the boxes, so that the photoelectric eye will also sense that there is no box in the station after the sealed box is moved out. Each ram is a single-action linear pneumatic cylinder controlled by one output. Once an output is energized, the ram extends and keeps moving as long as power is applied (turned on) ora mechanical stop is reached. The ram retracts when power is removed (turned off). Each ram has a limit switch to detect when a ram is fully extended (out). There is no limit switch to detect when a ram is retracted. Assume that 2 seconds is sufficient time to retracta ram when its control is turned off. When the start switch is pressed (turned on) for the first time only, the station assumes there is no box in the station, and waits for the photoelectric eye to detect the first box and perform the operation cycle continuously. Pressing the start switch when the mechanism is already running must have no effect. When the stop switch is pressed (turned off), the operation should stop (pause), but only when the conveyor belt is moving. The operation MUST not be stopped while the box flaps are being pushed down or being glued. Pressing the start switch while the operation of the station is paused causes the station to resume its suspended operation. There is a RESET PB switch that when on, restarts the operation. When RESET_PB is on, the internal state is set so that the ladder logic program assumes there is no corrugated box at the station. RESET_PB must be ignored if the operation is running. RESET PB only has effect when the operation is already paused. Assume the following physical inputs and outputs. Variable START PB STOP PB RESET PB PEI FRONT ELS BACK ELS RIGHT_ELS LEFT ELS CONV MOTOR GLUE_SPRAY FRONT EXT BACK EXT RIGHT EXT LEFT EXT Description Start push button, N. O., on when starting. Stop push button, N. C., offwhen stopping. Reset push button, N. O., on when restoring station to initial state. Photoelectric sensor, off (open) when box is in station. Front flap ram extended limit switch, on when extended. Back flap ram extended limit switch, on when extended. Right flap ram extended limit switch, on when extended. Left flap ram extended limit switch, on when extended. Conveyor motor control, on to move conveyor. Glue sprayer control, on to spray glue. Front flap ram extend direction control, on to extend ram. Back flap ram extend direction control, on to extend ram. Right flap ram extend direction control, on to extend ram. Left flap ram extend direction control, on to extend ram. The addresses associated with the physical inputs and outputs are: Modicon PLC-5 ControlLogix 100001 100002 100003 1:01/02 100004 1:01/03 1:01/04 100005 100006 1:01/05 100007 1:01/06 100008 1:01/07 Variable START_PB STOP PB RESET_PB PEI FRONT ELS BACK ELS RIGHT ELS LEFT ELS CONV MOTOR GLUE SPRAY FRONT EXT BACK EXT RIGHT EXT LEFT EXT Siemens 14.0 14.1 14.2 14.3 14.4 14.5 Local: 1:1.Data.6 14.6 Local: 1:1.Data.7 14.7 1:01/00 Local: 1:1.Data.0 1:01/01 Local: 1:1.Data. 1 Local:1:I.Data.2 Local: 1:1.Data.3 Local: 1:1.Data.4 Local: 1:1.Data.5 000001 0:02/00 Local:2:0.Data.0 Q8.0 000002 0:02/01 Local:2:O.Data.1 Q8.1 000003 0:02/02 Local:2:O.Data.2 Q8.2 000004 0:02/03 Local:2:O.Data.3 Q8.3 000005 0:02/04 Local:2:0.Data.4 Q8.4 000006 0:02/05 Local:2:O.Data.5 Q9.5 GEFanuc %181 %182 %183 %184 %185 %186 %187 %188 %Ql %Q2 %Q3 %Q4 %Q5 %Q6