I have two conveyor belts, two sensors and a temporary product storage area. The products are passing in front of sensor number one on the conveyor belt and entering the storage area.
The products will then be put on the second conveyor belt, pass in front of the sensor number two, and transferred to another location in the factory.
Now I’m going to write a PLC program for this system with the following conditions:
When the start switch is pressed, both motor number one and two are going to run and when the stop switch is pressed both motors are going to stop.
The current number of products in the storage area will be shown in MW8.
There is a bottle filling machine that fills the empty bottles on a conveyor belt with liquid from this tank. In this and the next lessons you’re going to learn how this machine works and how to write a professional PLC program that fully controls this machine.
This filling machine has three op...
Three position selector switches usually have one input and two outputs. The use of the terms input and output may be confusing but they should not be confused with inputs and outputs of PLC's. The term input refers to the power portion of the contacts that the switch contain while the outputs re...
Previously, I wrote code for controlling the signal lamps and also running the motor in the clockwise direction. In this lesson, I’m going to write code for running the motor in the counter clockwise direction.
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