LOGO! functions

4.4 Special functions list - SF

4.4.34Analog filter (0BA7 only)

Short Description

The analog filter function smooths the analog input signal.

Symbol in LOGO!

Wiring

Description

 

 

 

 

 

 

Ax

Input Ax is the analog input signal to be smoothed.

$[

 

 

 

 

$4

 

Input Ax is one of the following analog signals:

 

 

 

 

 

3DU

 

$[

 

 

• AI1 to AI8 (*)

 

 

 

 

 

 

 

 

 

 

 

•

AM1 to AM16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

•

NAI1 to NAI32

 

 

 

 

 

 

 

•

AQ1 to AQ2

 

 

 

 

 

 

 

•

NAQ1 to NAQ16

 

 

 

 

 

 

 

• Block number of a function with analog output

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Parameter

Sn (Number of samples) determines how many

 

 

 

 

 

 

 

analog values are sampled within the program cycles

 

 

 

 

 

 

 

that are determined by the set number of samples.

 

 

 

 

 

 

 

LOGO! samples an analog value within every

 

 

 

 

 

 

 

program cycle. The number of program cycles is

 

 

 

 

 

 

 

equal to the set number of samples.

 

 

 

 

 

 

 

Possible settings:

 

 

 

 

 

 

 

8, 16, 32, 64, 128, 256

 

 

 

 

 

 

Output AQ

AQ is the average value of input Ax over the current

 

 

 

 

 

 

 

number of samples.

* AI1...AI8: 0...10 V corresponds with 0...1000 (internal value).

Timing diagram (example)

$4

$[

6Q 

6Q

 

 

 

 

  



  





 

6Q 

6Q 

LOGO!

 

Manual, 04/2011, A5E03556174-01

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Siemens 6ED1050-1AA00-0BE8 manual Analog filter 0BA7 only, Timing diagram example
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