In the previous lessons, in the section about counters, I wrote a PLC program to run a conveyor belt and count the number of products entering the factory warehouse. In this lesson, I'm going to develop that PLC program using the comparator operations in a way such that when the number of products is more than a certain number, a signal lamp will light up and let the operator know that the warehouse capacity is full.
In some cases, although you select the correct data type for the comparator operations, you'll see that there are still errors in the software.
when you enter a variable for comparator instructions and you see that, despite considering all the parameters you'll constantly get an error, you nee...
In a section of a factory there are two conveyor belts that are used to move pieces from one sector to another. Next to each conveyor belt, there is a photo eye sensor installed to keep track of the boxes and also commanding the electrical motors to start and stop.
In this and the next lesson,...
In the previous lesson you learned how the machine works and what the input and output components are. In this lesson, I'm going to start writing a PLC program that would be able to control the machine in the best possible way.
The PLC program that I'm going to write is going to address three...
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