If the HW gate is enabled, only the HW gate may be influenced by the
gate functions. An opening and closing of the SW gate only interrupts
the count process.
Abort count process
The count process starts after closing and restart of the gate begin-
ning with the load value.
Interrupt count process
The count process continuous after closing and restart of the gate
beginning with the last recent counter value.
In this operating mode, the counter counts from the load value. When
the counter counts forward and reaches the upper count limit and
another counting pulse in positive direction arrives, it jumps to the
lower count limit and counts from there on. When the counter counts
backwards and reaches the lower count limit and another counting
pulse in negative direction arrives, it jumps to the upper count limit
and counts from there on. The count limits are set to the maximum
count range.
Limits Valid value range
Lower count limit
-2 147 483 648 (-2
31
)
Upper count limit
+2 147 483 647 (2
31
-1)
With overflow or underflow the status bits STS_OFLW respectively
STS_UFLW are set. These bits remain set until these are reset with
RES_STS. If enabled additionally a process interrupt is triggered.
No main counting direction
n The counter counts once starting with the load value.
n You may count forward or backwards.
n The count limits are set to the maximum count range.
n At over- or underflow at the count limits, the counter jumps to the
according other count limit and the internal gate is automatically
closed and the status bits STS_OFLW respectively STS_UFLW
are set. If enabled additionally a process interrupt is triggered.
n To restart the count process, you have to re-open the internal
gate.
Gate function abort/
interrupt
Count continuously
Count Once
VIPA System SLIO Deployment
Counter - Functions
HB300 | FM | 050-1BA00 | GB | 14-36 47
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