PLC Program Example – Shift Register (Conveyor)

This PLC program example will use a shift register to reject a product on a conveyor. We will look at tracking along a conveyor by applying the five steps of PLC development to a plc shift register example. A start pushbutton (NO) is used to start the conveyor, and a stop pushbutton (NC) is used to stop it. Sensor B detects a product on the conveyor belt, and sensor A will see if it is too large and needs to be rejected. The product is tracked along the conveyor belt, and when under the reject station, the Reject Blow Off will expel the wrong product. The product is randomly placed on the conveyor belt, so an incremental encoder is used to track the conveyor movement. The reset pushbutton (NO) will signal that all of the product on the conveyor has been removed between the sensors and reject blow-off. More information can be obtained on our website. https://accautomation.ca/plc-programming-example-shift-register-conveyor-reject/ 00:00 Shift Register Programming Example 00:24 Define the task 01:21 What is a shift register? 02:12 Define the Inputs and Outputs 02:33 Develop a Sequence Table 04:34 Writing the PLC Program 06:45 Testing the PLC Program Logic We will apply the five steps to PLC Program development to our following programming example of a shift register - conveyor reject. 1. Define the task 2. Define the inputs and outputs 3. Develop a logical sequence of operation 4. Develop the PLC program 5. Test the program Another example of programming PLC Shift Registers can be seen in our product sorting application. This will use 3D factory IO to demonstrate sorting color tags. PLC Programming Example – Sorting Station (Shift Register) https://accautomation.ca/plc-programming-example-sorting-station-shift-register/ PLC Programming Example - Sorting Station Testing - Video https://youtu.be/W0aibYb3DnE PLC Programming Example - Sorting Station - Video https://youtu.be/YMl2DPm_yaU ACC Automation https://www.accautomation.ca