Hello, I would like help with the program. I don't know how to create a repeating loop based on countingdown the set number. For example, a simple press:

After pressing the START button, output Q1 is turned on the piston goes down until the sensor of the lower position I1 turns on, then the piston goes up until the sensor of the upper position I2 turns on, and this process should be repeated as many times as I need, for example 17 times.

Thank you

this is what i needed