I have a problem for expanding this particular ladder diagram.
The cylinder is a double acting pneumatic cylinder type.
START -> Start button
A+ and B+ -> Cylinder moving forward
A- and B- -> Cylinder moving backward
For this sequential
START > A+ > A- > B+ > B-
Basically when START button is pressed, Cylinder A will move forward until Max, then move backward until Min. After Cylinder A moves, Cylinder B moves just like A. Forward first until Max, then backward, until Minimum, then it will be RESET.
It goes like this. (sorry for potato quality)
From that, I understand that it's just a Lock and Latch.
But, for this sequential
START > A+ > A- > A+ > A- > B+ > B-
for the love of God, I can't figure it out. How is the ladder diagram?
Also another question, how is the ladder diagram of a Monitor button (only has one button)?
Anyone can recommend comprehensive books/guides or software simulation for this?