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Chapter 4. Basic instructions
4-36
4.9.5
TRTG
TRTG
Retrigerrable timer
Available Device
Flag
Instructions
M
P
K
L
F
T
C
S
D
#
D Integer
Steps
Error
(F110)
Zero
(F111)
Carry
(F112)
Txxx
O
TRTG
O
O
3
1) Functions
-
When the input condition turns on, the current value will be set as the setting value and starts to
decrease. The timer contact turns on when the input condition is switched on.
-
The current value will decrease by 1 at every 0.1 or 0.01sec until it reaches to 0 and the timer
contact will be switched off when the current value reaches to 0.
-
If the input condition turns on again during timer operation, the current value will reset as the
setting value and re-start to decreasing from the setting value.
-
When the RST instruction is executed, the timer contact will turn off and the current value will be
cleared as 0.
2) Program example
V
TRTG
Input condition
Timer setting value
Timer contact number
∴
Setting time ( t ) = Unit period (0.1 or 0.01 sec) x Setting value
Txxx
V
(
P065
)
P020
T096
[
TRTG T096 50
]
[
RST T096
]
P023
P065
t
P020
t=5sec
[Time chart]
[Program]