1. Basic Program Design Examples 1.4 Falling-edge Pulse Output for One Scan Cycle X0 Y0(Electromagnetic valve ) Control Purpose: z Creating a pulse of one program scan cycle as the condition to trigger the electromagnetic valve or other devices when the switch is turned off. X0 M10 One scan cycle Y0 Devices: Control Program: X0 M10 turns on for one scan cycle M10 Y0 = OFF Program Description: z When X0 is turned on (Falling-edge triggered), PLF instruction will be executed, and M10 will send a pulse for one program scan cycle. z When M10 = ON, [RST Y0] instruction will be executed and Y0 will be OFF. In this case, the electromagnetic valve will be shut down.
DVP-PLC Application Examples 1-4 Device Function X0 Switch(ON→OFF) M10 Creating a trigger pulse for one program scan cycle Y0 Electromagnetic valve PLF M10 RST Y0