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126 T1-16S User’s Manual
7. Instructions
NNegative pulse contact
Expression
A
Input N Output
Function
When the input is ON and the device A is changed from ON to OFF (ON at last scan and OFF at
this scan), the output is turned ON.
This instruction is used to detect the device changing from ON to OFF.
Execution condition
Input Operation Output
OFF Regardless of the state of dev ice AOFF
ON Stat e of device A is OFF A is OFF at last scan OFF
A is ON at last scan ON
State of device A is ON OFF
Operand
Name Device Register Constant Index
X Y R S T. C. XWYWRWSW T C D I J K
ADevice √√√√√√
Example
R100 comes ON for only 1 scan when X000 is ON and X003 changes to OFF.
X000
X003
R100
1 scan time 1 scan time
Note
The maximum usa ble number in a program is 2048.
(PN(P)(N)total)