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9.3
Continuous Counting
Definition
In this operating mode, the counter of the FM 450-1 counts continuously
from the current counter status. If the counter reaches the upper limit when
counting up, it jumps to the lower limit and continues to count from there
without any pulse losses. If the counter reaches the lower limit when count-
ing down, it jumps to the upper limit and continues to count without any
pulse losses.
Selecting the Gate
You can select the gate function in this mode. The following possibilities are
Function
available to you:
Figure 9-1
Opening and
You open and close the software gate of the counter in each case with the
Closing the
input parameter SW_GATE of the FC CNT_CTRL.
Software Gate
Open software gate
Close software gate
FM 450-1 Counter Function Module
C79000-G7076-C450-01
www.gkbpx.com
Operating Modes, Settings, Parameters and Commands
Without gate (default)
Software gate
Hardware gate, level-controlled or edge-controlled
Counter status
Upper count limit
Current counter limit
Lower count limit
Gate start
Continuous Counting with Load Value and Gate Function
Action
Gate stop
...Is Initiated By
Setting SW_GATE
Resetting SW_GATE
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9-5
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