LOGO! functions

4.4 Special functions list - SF

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4.4.20Analog comparator

Short description

The output is set and reset depending on the difference Ax - Ay and on two configurable thresholds.

 

Symbol in LOGO!

Wiring

Description

 

 

 

 

 

 

 

 

 

 

Inputs Ax and Ay

Inputs Ax and Ay are one of the following analog

 

$[

 

 

˂$

 

 

 

signals:

 

 

 

 

 

 

$\

 

 

 

 

 

 

 

4

 

• AI1 to AI8 (*)

 

 

 

 

 

 

 

 

 

3DU

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• AM1 to AM6 (if 0BA6) or AM1 to AM16 (if 0BA7)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• NAI1 to NAI32 (if 0BA7)

 

 

 

 

 

 

 

 

 

 

 

• AQ1 to AQ2

 

 

 

 

 

 

 

 

 

 

 

• NAQ1 to NAQ16 (if 0BA7)

 

 

 

 

 

 

 

 

 

 

 

• Block number of a function with analog output

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Parameter

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

 

 

 

 

 

 

 

 

 

 

Output Q

Q is set or reset, depending on the difference Ax - Ay

 

 

 

 

 

 

 

 

 

 

 

and the set thresholds..

 

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

 

 

 

 

 

 

 

 

 

 

 

LOGO!

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Manual, 04/2011, A5E03556174-01

Page 217 Page 219
Page 218
Image 218
Siemens 6ED1050-1AA00-0BE8 manual 2II , Analog comparator
Page 217 Page 219

6ED1050-1AA00-0BE8 specifications

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