If a part is stuck on the exit sensor to the ramp, this will block the sensor. To reset the tracking of the parts and clear the conveyors, hit the reset button when the machine is stopped.
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Hitting the reset when the panel is in manual mode will allow the counters to reset to zero. The number of parts sorted is tracked by way of a counter that will display the number of parts that have been sorted for the exit ramp.
The sorting station diverter for the exit ramp will turn on allowing the part to slide down the exit ramp. This will bring parts to the vision sensor.Įach part will be tracked down the conveyor belt until it is in front of the appropriate exit ramp. Upon starting the entry, exit, and sorting station belt conveyors will turn on. Watch on YouTube: PLC Programming Example – Sorting Station TestingĪ normally open start and normally closed stop pushbuttons are used to start and stop the process in automatic mode. Watch the sequence of operation video below. – Pick and Place Define the task: (Step 1 – Sorting Station Shift Register) In our series on the five steps to PLC program development, we have done some similar practical examples. The program will use shift registers to track colored parts down a conveyor and sort depending on color into one of three locations.ĭeveloping the PLC program example is a process that can be clearly defined. We will apply the five steps to a PLC example program development of a sorting station.
Using the PLC we will sort items on a conveyor using shift register instructions.