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VIPA System SLIO
5.6.6 Counter operating modes
5.6.6.1
Count continuously
HB300 | CPU | 013-CCF0R00 | en | 16-40
In this operating mode the counter counts starting with the load value.
n
n
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.
n
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 counter limits are fix set to maximum range.
n
n
With overflow or underflow the status bits STS_OFLW respectively STS_UFLW are
set
Ä Chapter 5.6.4 'SFB 47 - COUNT - Counter controlling' on page 105. These bits
remain set until these are reset with RES_STS. If enabled additionally a hardware
interrupt is triggered.
Limits
Lower count limit
Upper count limit
Counting > Counter operating modes
Valid range of values
-2 147 483 648 (-2
31
)
+2 147 483 647 (2
31
-1)
Deployment I/O periphery
115
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