*Question 3: Answer all parts * Consider the task of synchronously producing ice-cream cones, as illustrated in Figure Q3, by implementing a shift register function. Conveyor Motor (Y3) Conveyor Index signal (XO) Start (X3) Stop (X4) { Try to find answers else where for now } Good/Faulty cone detection (X1) ||| V V V V V V Position 7 Figure Q3 Cones are placed into carriers and proceed to an indexing conveyor which is sized to accomodate eight carriers/cones, from position 0 to position 7. A rotary encoder automatically generates a pulse on input (XO) every time the conveyor indexes. The conveyor motor and gearbox arrangement produces this indexing motion and is mechanically timed to occurs every 5 seconds. Good/Faulty cone detection is indicated by means of a sensor (X1) at position O on the conveyor. [Good cone X1 ON, Faulty/not present cone X1 OFF] Good cones receive ice cream (position 3) by activating (YO), syrup (position 5) by activating (Y1) and nuts (position 7) by activating (Y2). The three dispensing machines are internally timed and controlled to take place within the allocated time. The process is started by pressing the start switch (X3) and can be stopped at any time by pressing the stop switch (X4). The cones are processed in batches and the process is to automatically stop once 1,000 good cones have been processed for machine cleaning. In this instance pressing the stop switch (X4) will reset the count and clear the shift register. Nuts Dispense (Y2) ** Inputs Required: Conveyor Index signal Good/Faulty cone detection Start button (normally open-spring returned) Stop button (normally closed-spring returned) Outputs Required: Ice Cream Fill Syrup Dispense Nuts Dispense Conveyor Motor (XO) (X1) (X3) (X4) (YO) (Y1) (Y2) (Y3) What do you understand by the term 'shift register' commonly employed in PLC programs? (5 marks) Implement a ladder logic PLC program for the problem, using a shift register function (see Appendix A). Explain your solution. (25 marks)