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Siemens LOGO Soft Comfort Online Help Manual

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Reference material
5.3 Special functions
LOGO!Soft Comfort Online Help
Operating Instructions, 11/2017
307
Description of function
The function outputs the average value after sampling the analog input signal according to
the set number of samples. This SFB can reduce the error of analog input signal.
Note
There are a maximum of eight analog filter function blocks available for use in the circuit
program in LOGO!Soft Comfort V7.0 or V8.0.
Special Functions Overview (Page 241)
5.3.3.10
Max/Min (0BA7 and later versions only)
Short description
The Max/Min function block records the maximum or minimum value.
Connection
Description
Input
En
The function of input En (
En
able) depends on the settings of parameter Mode
and the selection of check box "when En = 0, reset Max/Min".
Input
S1
This input is enabled when you set
Mode
=2:
A positive transition (0 to 1) at input
S1
sets the output
AQ
to the maximum val-
ue.
A negative transition (1 to 0) at input
S1
sets the output
AQ
to the minimum val-
ue.
Input
Ax
Input
Ax
is one of the following analog signals:
• AI1 to AI8 (*)
• AM1 to AM16 (if 0BA7), or AM1 to AM64 (if 0BA8)
• NAI1 to NAI32
• AQ1 to AQ2 (if 0BA7), or AQ1 to AQ8 (if 0BA8)
• NAQ1 to NAQ16
• Block number of a function with analog output
Parameter
Mode
Possible settings: 0, 1, 2, 3
Mode = 0: AQ = Min
Mode = 1: AQ = Max
Mode = 2 and S1= 0 (low): AQ = Min
Mode = 2 and S1= 1 (high): AQ = Max
Mode = 3 or a block value is referenced: AQ = Ax
Output
AQ
AQ
outputs a minimum, maximum, or actual value depending on the inputs, or is
reset to 0 if configured to do so when function is disabled
* AI1 to AI8: 0 to 10 V corresponds with 0 to 1000 (internal value).
… 307 …


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