Chapter 5 Basic Instructions Symbol: Explanation: 1. When the value in the accumulative register turns from 0 to 1, the instruction NP keeps the value 1 in the accumulative register for a scan cycle. After the second scan cycle is finished, the value in the accumulative register changes to 0. 2. Please use the instruction FB_NP in the function block. Example: Instruction: Operation: LD M0 Contact A of M0 is loaded. AND M1 Contact A of M1 is connected in series. NP The circuit is rising edge-triggered. OUT Y0.0 The coil Y0.0 is driven. Timing diagram: M0 M1 Y0.0 One scan cycle One scan cycle 5-21 Instruction code Operand Function NP - The circuit is rising edge-triggered.