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6F3B0253
Basic Hardware and Function 125
7. Instructions
P
Positive pulse contact
Expression
A
Input
P
Output
Function
When the input is ON and the device A is changed from OFF to ON (OFF at last scan and ON at
this scan), the output is turned ON.
This instruction is used to detect the device changing from OFF to ON.
Execution condition
Input Operation Output
OFF Regardless of the state of device A OFF
ON State of device A is OFF OFF
State of device A is ON A is OFF at last scan ON
A is ON at last scan OFF
Operand
Name Device Register Constant Index
X Y R S T. C. XWYWRWSW T C D I J K
A Device
√√√√√√
Example
R100 comes ON for only 1 scan when X000 is ON and X003 changes to ON.
X000
X003
R100
1 scan time 1 scan time
Note
• The maximum usable number in a program is 2048.
(
PN(P)(N)
total)