User guide

GEI-100340
tine
Description
Interruptable monostable timer.
Timer is activated on every rising edge of input g in the following way:
l On the rising edge of input g the following operations are performed:
l Reading of the activation time from input t.
l Zero setting of the internal variable act (output act).
l Enable of the timer, internal variable ena is set TRUE (output ena).
l Output o is set TRUE.
l After t milliseconds are elapsed, during which input g is always TRUE, timer outputs are set
in the following way:
l output o is set FALSE
l output ena is set FALSE
l ouput act stops on the last value reached (t value)
l If ,during the timer is active, input g becomes FALSE, the timer is immediately disabled and
the outputs are set in the following way:
l output o is set FALSE
l output ena is set FALSE
l ouput act stops on the last value reached
When the timer is active, ouput ena is TRUE, ouput act indicates the number of cycles elapsed from
operations start. When output ena is FALSE output act is not significant.
Input t is read only in the cycle in which the rising cycle of input g is checked. Therefore, if input t changes
while timer is enabled, output ena is TRUE, the new value is not considered. This value will be used in the
next activation timer.
All times are expressed in milliseconds. Therefore, if input t is set to 12, time output o becomes TRUE for 12
milliseconds and output act changes from 0 to 12.
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