·438·
Installation manual
CNC 8055
CNC 8055i
9.
PLC RESOURCES
SOFT: V02.2X
Timers
9.5 Timers
These are elements capable of maintaining their output at a determined logic level during a preset
time (time constant), after which the output changes status.
They do not have image values and are represented by the letter T, followed by the number of the
timer it is required to reference, for example, T1, T25, T102, etc.
The time constant is stored in a 32-bit variable, and so its value can be between 0 and 4294967295
milliseconds, which is equivalent to 1193 hours (almost 50 days).
The PLC has 512 timers, each of which has T status output and TEN, TRS, TG1, TG2, TG3 and
TG4 inputs. It is also possible to check at any time , the time elapsed since it was activated.
Enable input (TEN)
This input allows the timing of the timer to be stopped. It is referred to by the letter TEN followed
by the number of the timer which is wished to reference, for example TEN 1, TEN 25, TEN 102, etc.
So that the time elapses within the timer this input must be at level "1". By default, every time a timer
is activated, the PLC sets this input low ("1").
If once the timer has been activated, TEN = 0, the PLC interrupts the timing and TEN must be set
to "1" to resume timing.
Example:
I2 = TEN 10 Input I2 controls the Enable input of timer T10.
To Next Page
Loading...
