AC75 AT Command Set
20.9 AT^SSCNT s
AC75_ATC_V01.002 Page 520 of 569 10/30/06
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3 The effect of value 3 depends on the selected counter mode:
If AT^SCCNT, parameter <mode>= 0 (Start-Stop counter mode), then
<action> type 3 stops the pulse counter and displays, as "^SSCNT" URC, the
number of pulses counted until this time.
If AT^SCCNT, parameter <mode>= 1 (Limit counter mode), then <action>
type 3 immediately stops the pulse counter without indicating the "^SCCNT"
URC. This action has the same effect as the command AT^SCCNT=0,0.
Measurement result of the pulse counter in Start-Stop mode, indicated within the "^SSCNT" URC, if AT^SCCNT,
parameter <action>=2 or 3. The value range of <pulse> is 32 bits (232-1).
0...4294967295 Number of pulses counted.
Note
• Measurement accuracy: In Start-Stop mode, you can achieve 100% accuracy if you take care that pulse trans-
mission begins after the start command (AT^SSCNT=0 or 1) has returned OK and ends before the stop com-
mand (AT^SSCNT=3) is issued.
20.9.1 Using the Pulse Counter in Start-Stop Counter Mode<pulse>(num)
at^sccnt=1,0
Open pulse counter and enable Start-Stop counter mode.
OK
at^sscnt=0
Reset and start pulse counter from 0.
OK
at^sscnt=2
Request value.
OK
^SSCNT: 0000003254
"^SSCNT" URC indicates number of pulses counted.
at^sscnt=2
Request value.
OK
^SSCNT: 0000010024
"^SSCNT" URC indicates number of pulses counted.
at^sscnt=2
Request value.
OK
^SSCNT: 0000015134
"^SSCNT" URC indicates number of pulses counted.
at^sscnt=3
Request value and stop pulse counter.
OK
^SSCNT: 0000021020
"^SSCNT" URC indicates number of pulses counted until this time.
at^sscnt=2
Request value.
OK
^SSCNT: 0000021020
"^SSCNT" URC still indicates the count of the last run.
at^sscnt=1
Restart pulse counter at the value of the last run.
OK
at^sscnt=2
Request value.
^SSCNT: 0000022123
"^SSCNT" URC indicates number of pulses incremented from the last
run.