Limits Valid value range
Limit value
-2 147 483 648 (-2
31
)
to +2 147 483 646 (2
31
-2)
Upper count limit
+2 147 483 647 (2
31
-1)
6.12 Counter - Additional functions
The following additional functions may be set via the parametrization
of the counter:
n Gate function
–
The gate function is used to start , stop and interrupt a
counting function.
n Latch function:
– An edge 0-1 at the digital Latch input stores the current
counter value in the latch register.
n Comparison
– You may set a comparison value that de-activates a digital
output respectively releases a process interrupt depending on
the counter value.
n Hysteresis:
– By specifying a hysteresis you can prevent e.g. a high output
toggling and/or triggering interrupts, when the value of an
encoder signal varies to the comparison value.
The illustration shows how the additional functions influence the
counting behavior
. The following pages describe these additional
functions in detail:
Overview
Schematic structure
VIPA System 300SDeployment I/O periphery
Counter - Additional functions
HB140 | CPU | 314-6CF03 | GB | 16-43 164
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