Setting Ranges Of Timer And Counter - Mitsubishi Electric MELCEC Q Series User Manual

4. CPU MODULE
4.2.3

Setting ranges of timer and counter

(1)
(2)
Timer setting range
(a) Default values of the timer setting ranges are as follows:
Timer points :256 points
100ms timer :T0 to T199
10ms timer :T200 to T255
Retentive timer :None
(b) When timer-use points are set to 257 or more, the default values will be as
follows:
100ms timer :T0 to T199
10ms timer :T200 to T255
100ms timer :T256 to T2047
(c) The timer type can be arbitrarily set in serial numbers, with T0 to T255 in 8 point
units, and T256 to T2047 in 16 point units.
By setting the timer points actually to be used, the timer processing time
subsequent to the END instruction can be shortened.
(d) Timer setting values are as follows:
T0 to T255 : constant or word device (D)
T256 to T2047 : word device (D, W, R)
Counter setting range
(a) Default values of counter setting ranges are as follows:
Counter points :256 points
Normal counter :C0 to C255
Interrupt counter :None
(b) When the counter-use points are set to 257 points or more, the default values
will become as follows:
Normal counter :C0 to C255
Normal counter :C256 to C1024
(c) A counter which can be setup as an interrupt counter must be in the range C244
to C255 only, and any counters outside the range cannot be set up.
The setup is made with parameters in C224 to C255 by one point for the
interrupt counter.
Any counter in the range C224 to C255 which is not set up as an interrupt
counter can be used as a normal counter.
(Allocate a storage device for the set value by setting
parameters.)
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