Mitsubishi plc controls the sequential expansion and contraction of three cylinders

Pic control sequence is a start-stop programming mode.

The first time is to expand and return, the second time is to expand and stay for a period of time, and the third time is to expand and stay for a period of time. Sensor x400 detects that the workpiece is in place, and the drill bit moves down y430. When the bit sleeve drilled to a certain depth is pressed to the lower proximity switch x40 1, the timer t450 will time, and after 4 seconds, y43 1 will quickly retreat to the upper proximity switch x402 and return to its original position.

The stored value of plc memory replaces the light-on state, which improves the reliability of the switch and prolongs the service life. Moreover, the stored value of the memory can be used indefinitely, and the logical relationship can be changed only by changing the control program.