Mitsubishi Electric MELSEC iQ-F Series Training Manual page 46

Timer, High-speed Timer, Retentive Timer
Timer setting value (time limit: 3.0 seconds)
X5
T0
T0
Timing chart
Contact
X5
Coil T0
3.0 seconds
Normally open
contact T0, coil Y0
Normally close
contact T0, coil Y1
Retentive timers
When an input condition turns on, the coil turns on and the value of a retentive timer starts increasing. When the current value
becomes equal to a set value, the retentive timer goes timeout and the contact turns on. When the input condition turns off
during the addition, the coil turns off but the current value is held. When the input condition turns on again, the coil turns on
and the current value is used in the integration to continuously increase the value of the timer.
X6
OUT ST1 K50
ST1
Y3
X7
RST ST1
END
Always use the RST instruction for turning off the contact and
clearing the current value after the retentive timer goes timeout.
High-speed retentive timers
Change the output instruction "OUT" to "OUTH" to select a high-speed retentive timer.
OUTH ST1
OUT T0 K30
Y0
Y1
K50
• The operation of the timer contact delays by a set
time after the coil is energized. (On delay timer)
• The setting range of a timer value is K1 to
K32767.
Low-speed (100ms) timer: 0.1 to 3276.7 seconds
High-speed (10ms) timer: 0.01 to 327.67 seconds
• When the value set to a timer is 0, it is turned on
(timeout) by the execution of the instruction.
High-speed timer
Change the output instruction "OUT" to "OUTH"
to select a high-speed timer.
Timer setting value (time limit: 0.30 seconds)
Contact X6
Coil ST1
Normally open
contact ST1
Contact X7 (for inputting
the RST instruction)
Current value
of ST1
46
OUTH T1 K30
3.0 2.0
seconds seconds
0 30 30 50 50 0