15. Handy Instruction Design Examples be OFF. The cleaner will stop working. z When Clean is pressed again, X0 will be activated again to switch the ON status of M0 to be OFF. Therefore, Y1 will be ON and the cleaner will move right until it touches the right side limit switch. X2 = ON, and Y1 will be OFF. The cleaner will stop at the current position. z Wherever the location of the cleaner is, the cleaner will move to the opposite direction every time when Clean is pressed. DVP-PLC Application Examples 15-2