6F3B0250
Basic Hardware and Function 149
7. Instructions

SS Single shot timer

Expression
Input ¾[
A
SS
B
]¾ Output
Function
When the input is changed f r om O FF to ON, the output and the timer device corresponding to the
timer register
B
are set to O N, and timer updating for
B
is started. The elapsed time is stor ed in
B
.
When the specified time by
A
has elapsed aft er t he input came ON, the out put and the timer device
are turned O FF. (Timer updat ing is stopped)
The available data rang e for operand
A
is 0 to 32767.
Execution condition
Input Operation Output
OFF Elapsed time < preset time (timer is updatin
g
)ON
Elapsed time ³ preset time (timer is not updatin
g
)OFF
ON Elapsed time < preset time (timer is updatin
g
)ON
Elapsed time ³ preset time (timer is not updatin
g
)OFF
Operand
Name Device Re
g
ister Constant Index
X Y R S T. C. XW YW RW SW T C D I J K
A
Preset time ÖÖÖÖÖÖÖÖÖÖ
0 - 32767
B
Elapsed time Ö
Example
Y021 (and the tim er device T.003) is turned OFF 1 second after X 000 came ON.
X000
T003
T.003
Y021
Preset time (1 s) Preset time (1 s)
Preset value Note
· Time is set in 10 ms units for;
T1: T000 to T 031 ( 0 t o 327.67 s)
T1S: T000 to T063 (0 to 327.67 s)
· Time is set in 100 ms units f or ;
T1: T032 to T 063 ( 0 t o 3276.7 s)
T1S: T064 to T255 (0 to 3276.7 s)
· Multiple timer instructions (TON, TOF or
SS) with the same timer r egister are not
allowed.
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