Mitsubishi Electric MELSEC iQ-R Series - Page 2002

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36 COUNTER/TIMER FUNCTION BLOCKS
36.8 Timer Function Block
■TIMER_CONT_FB_M/TIMER_CONTHFB_M
• This is a retentive timer that measures the on time of a variable. When (s1) turns on, measurement of the current value
starts. There are two retentive timers: low-speed (TIMER_CONT_FB_M) and high-speed (TIMER_CONTHFB_M) retentive
timers.
• The measurement starts from (s3)1 to 1000ms (0.1 to 100ms for the high-speed retentive timer) (variable; set in
parameter). When the value reaches (s2)1 to 1000ms (0.1 to 100ms for the high-speed retentive timer), (d2) turns on. The
measured current value is output to (d1).
• Even when (s1) is off, the on/off states of (d1) and (d2) are held. When (s1) turns on again, the measurement resumes with
the measured value that has been held.
• The unit of measurement (time limit) for the retentive timers is common to both the low-speed timer (TIMER_LOW_FB_M)
and high-speed timer (TIMER_HIGH_FB_M).
• The valid setting range of (s2) is 0 to 32767.
• The valid setting range of (s3) is -32768 to 32767. Note that if a negative value is specified, 0 will be used as the initial
value.
• To reset (d1) of a retentive timer, reset (s1) of FB directly.
Ex.
Label name: TIMER_CONT_FB_M_1
[Ladder program]
[ST program]
RST(M0,TIMER_CONT_FB_M_1.Coil)
[Ladder example]
[Timing chart]
Operation error
There is no operation error.
• Low-speed retentive timer: Low-speed timer
• High-speed retentive timer: High-speed timer
M0 ENO
d
EN
RST
TIMER_CONT_FB_M_1.Coil
X0 Coil
200 ValueOutPreset
0 StatusValueIn M10
D10
TIMER_CONT_FB_M
01
ON
ON
150
M10
X0
OFF
OFF
151 200
5s15s
D10
... ...