Delta AH500 - Page 200

Chapter 5 Basic Instructions
5-21
Instruction code Operand Function
NP
-
The circuit is rising edge-triggered.
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
Y0.0
M1
One scan cycle
One scan cycle