In addition to sensor number 2, I have sensors at the two ends of the conveyer belt. As I previously said, I want sensor number 1 to count the number of empty bottles and sensor number 3 to count the number of filled bottles.
After implementing the safety conditions, the PLC program is now complete and I can begin testing.
With the current PLC program:
1.Every time the motor turns off from the bottle blocking sensor number 2, the operator has to press the start switch again and this is clearly not what I wanted in the automatic mode.
2.When a bottle gets in front of the sensor number 2 and the valve is open,...
In this lesson, I'm going to replace this three position selector switch with a two position switch and then revise the software such that there won't be any change in the way that the machine operates. This means that with the new two position selector switch, I will be able to change the machin...
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