BECKHOFF KL1501 - Manual (Page 16)

Terminal configuration
14 KL1501
3.5 Data transfer, function
3.5.1 Automatic setting of the outputs with defined
counter readings
V/R counter or gated
counter: An internal function for setting the outputs can activated via the feature
register R32.
If the counter reaches the counter status 0x80000000 the output OUT1 is
set (feature bit 5) or is reset (feature bit 6).
If the counter overflows, the output is withdrawn accordingly.
In parallel, output OUT2 is set with bit 15 (0x8000).
Two counters active: If the corresponding counter reaches the counter status 0x8000 the output
(OUT2, OUT1) is set (feature bit 4,6) or is reset (feature bit 5,7).
If the counter overflows, the output is withdrawn accordingly.
Example Feature register = 0x02AC, i.e. two counters are active, the counter is set
via the positive edge of the CNT_SET bits and the control bit CNT_INH is
responsible for setting the second counter.
A glass is to be filled with 200 ml of beer. In doing so, one pulse
corresponds to 0.01 ml, i.e. one glass corresponds to 20000 pulses
(0x31E0 = 0x8000-20000).
First counter Control
byte Status
byte Output
data Output
OUT1 Function
0x0000 0x00 0x00 0x0000 Low Power on reset
0x0000 0x22 0x00 0x31E0 Low Counter is set, internal
function activated
0x31Ex 0x02 0x28 Don’t care High Beer is running
....
0x8000 0x02 0x00 Don’t care Low The first glass is full
...
0x8000 0x22 0x00 0x31E0 Low Counter is set, internal
function activated
0x31Ex 0x02 0x28 Don’t care High Beer is running
....
0x8000 0x02 0x00 Don’t care Low The second glass is full
....