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T1/T1S User’s Manual
7. Instructions
N
Negative 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 device
A
OFF
ON
State 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. XW YW RW SW
T
C
D
I
J
K
A
Device
Ö
Ö
Ö
Ö
Ö
Ö
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 usable number in a program is 2048.
(
P
N
(P)
(N)
total)
T1S only
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