Value range: 0...99999999
StartVal: Initial value from which to begin
counting either down or up.
Retentivity set (on) = the status is
retentive in memory.
Q is set and reset according to the actual
value at Cnt and the set thresholds.
Parameter
The on threshold On and the off threshold Off can be provided by the value of another already-programmed
function:
Analog comparator: Ax – Ay
Analog trigger: Ax
Analog amplifier: Ax
Analog multiplexer: AQ
Analog ramp: AQ
Analog math: AQ
PI controller: AQ
Data latching relay: AQ
Up/Down counter: Cnt
The value of ＂On＂，＂Off＂and ＂Cnt＂can be set/modified in parameter mode. For information about how
to modify ,refer to chapter 5.2.2 please.
Timing diagram
Description of the function
The function increments (Dir = 0) or decrements (Dir = 1) the internal counter by one count with every
positive edge at input Cnt.
You can reset the internal counter value to '000000', with a signal at the reset input R. As long as R=1, the
output is 0 and the pulses at input Cnt are not counted.
Output Q is set and reset according to the actual value at Cnt and the set thresholds. See the following rules
for calculation.
Calculation rule
If the on threshold >= off threshold, then:
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