Pixsys TD240 series, Руководство по эксплуатации

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10.4 Timer T
The TD240 has 128 timers of 16 bits. Each is available in three
modes of functioning:
•
TON “on-delay” of activation: time begins counting when the
coil is activated (ON). The timer bit (contact T) will be activated
when the current timer value (word T) becomes greater than or
equal to the pre-established time (preset, word PT). When the
coil is deactivated (OFF), the current value of the timer is reset
(zeroed). The timer stops in any case when it reaches the
maximum value in signed 16-bits (+32767).
•
TOFF “off-delay” of deactivation: allows delaying the
deactivation of an output for a given period of time after the
input has been deactivated. When the coil is activated (ON),
the time bit (contact T) is immediately activated and the current
value of the timer (word T) will be set to “0”. At the deactivation
of the coil, the timer will count until the elapsed time becomes
greater than or equal to the pre-established time (preset, word
PT). Once reached, the timer bit deactivates and the current
value stops advancing. If the input remains inactive for a time
that is less than the pre-established time, the timer bit remains
active. To start the count, the TOFF operation should sense a
transition from state active to non-active (ON
OFF).
•
TONR with memory: time begins counting when the coil is
active (ON). The timer bit (contact T) is active when the current
timer value (word T) becomes greater than or equal to the
preestablished time (preset, word PT). When the coil is
deactivated (OFF), the current value of the timer is maintained.
Thus it is possible to accumulate time for more periods of
activation of the coil. The current value of the timer can be
reset with the operation MOV(Tx = #0). The timer stops in any
case when it reaches the maximum value in signed 16-bits
(+32767)..è attiva (ON).