LSIS Master-K K1000S - Page 29

Chapter 4 CPU modules MASTER-K
4-6
3) Integral timer
In general, its operation is same as on-delay timer. Only the difference is the current
value will not be clear when the input condition of TMR instruction is turned off. It keeps
the elapsed value and restart to increase when the input condition is turned on again.
When the current value reaches preset value, the timer output relay is turned on.
The current value can be cleared by the RST instruction only.
4) Monostable timer
In general, its operation is same as off-delay timer. However, the change of input
condition is ignored while the timer is operating (decreasing).
Timer in
p
ut condition
Timer out
p
ut rela
y
Preset value
(
PV
)
Current value
t1 t2 t3
PT=t1+t2+t3
Timer reset in
p
ut
Timer in
p
ut condition
Timer out
p
ut rela
y
Preset value
(
PV
)
Current value
PT
(
On o
p
eration
)
(
i
g
nored
)
(
i
g
nored
)