In the previous lesson I added the address of the start switch in the reset input of the signal lamp flip-flop and now I'm able to run motor 1 by pressing the start switch but the problem is that as soon as I take my hand off the switch the motor is going to stop again!
The other problem that this PLC program has is that when the big blue box is full, the signal lamp turns on and motor 1 stops automatically but motor 2 won't turn on like I want.
In this lesson I'm going to add some new code to fix these problems
As I said previously, I also have a reset switch for this machine. In this lesson, I'm going to add an open contact to the reset input of the counter so that when the reset switch is pressed the accumulated value for the counter is going to be reset to zero.
At the end, when the PLC program is c...
In this lesson, I'm going to write a PLC program for a vehicle barrier at the parking entrance using a count up and down instruction and also two comparator instructions. What I need the vehicle barrier to do for me is, when the number of vehicles within the parking lot is equal to 500, it should...
In the previous lesson I wrote a PLC program to control the vehicle barrier in a parking lot entrance and also counting the number of the vehicles within the parking lot.
In this lesson I'm going to write a short piece of code for turning on the signal lamp when the parking lot capacity is full...
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