13.3 Functions Of The Counter Module; Continuous Upward Counting; Continuous Downward Counting - Siemens Metro 21 M216KA Operator's Manual

The 1COUNT40kHz Counter Module

13.3 Functions of the Counter Module

Contents of the
Section
Continuous
Counting
13-4
Section
13.3.1 24V Pulse Initiator With/Without Direction Indicator
13.3.2 Gate Function
13.3.3 Digital Output
The counter begins at the lower count limit.
If the counter reaches the upper limit when counting upward and there is then
another count pulse, the counter jumps to the lower limit and starts to count
the count pulses again, thus counting continuously.
If the counter reaches the lower count limit when counting downward and
there is then another count pulse, the counter jumps to the upper count limit
and starts to count downward from there.
Counter status
Upper count limit
Lower count limit
Figure 13-3 Continuous Upward Counting
Counter status
Upper count limit
Lower count limit
Figure 13-4 Continuous Downward Counting
ET 200L, ET 200L-SC and ET 200L-SC IM-SC Distributed I/O Device
Topic
EWA 4NEB 780 6009-02c
Page
13-7
13-8
13-9
Time
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