AH Programming Manual Symbol: PLS D ： Specified device Bit Explanation: 1. When the conditional contact is switched from OFF to ON, the instruction PLS is executed, and the device D sends out a pulse for a scan cycle. 2. Please do not use the instruction PLS in the function block. Example: When X0.0 is ON, M0 is ON for a pulse time. When M0 is ON, Y0.0 is set to ON. Timing diagram: X0 M0 Y0 5-18 Instruction code Operand Function PLS D Rising-edge output Device DX DY X Y M SM S T C HC D L PR D ● ● ● ● ● ● ● ● ● ● ● ● One scan cycle