Analog Comparator - Siemens Logo! Manual

LOGO! functions

4.4.18 Analog comparator

Short description
The output is set and reset, depending on the difference
Ax – Ay and on two configurable thresholds.
Symbol in
LOGO!
* AI1...AI8: 0...10 V corresponds with 0...1000 (internal value).
188
Wiring
Inputs Ax and
Ay
Parameter
Output Q
Description
You apply the analog sig-
nals whose difference you
want to analyze at the in-
puts Ax and Ay.
Use the analog inputs
( )
AI1...AI8 * , the analog
flags AM1...AM6, the block
number of a function with
analog output, or the analog
outputs AQ1 and AQ2.
A: Gain
Range of values:
10.00
B: Zero offset
Range of values:
10.000
On: On threshold
Range of values:
20.000
Off: Off threshold
Range of values:
20.000
p: Number of decimals
Range of values:
0, 1, 2, 3
Q is set or reset, depending
on the difference Ax – Ay
and the set thresholds..
LOGO! Manual
A5E00380835-01