Siemens LOGO!, Руководство пользователя

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LOGO! functions
4.4 Special functions list - SF
LOGO!
248
Manual, 04/2011, A5E03556174-01
Setting the Par parameter (0BA7)
View in programming mode (example):
%\WHLQGH[
%5
4 6
5HWHQWLYLW\HQDEOHG
<RXFDQVHOHFWDE\WHLQGH[IURPWR
<RXFDQVHOHFWDELWQXPEHUIURPWR
The view above indicates that the configured shift register bit is S4.8.
This special function is not available in parameter assignment mode.
4.4.28 Analog multiplexer
Short description
This special function outputs one of four predefined analog values or 0 at the analog output.
Symbol in LOGO! Wiring Description
Input En A change in status from 0 to 1 at input En (Enable)
switches a parameterized analog value to the output
AQ, depending on the value of S1 and S2.
Inputs S1 and S2 S1 and S2 (selectors) for selecting the analog value
to be issued.
•
S1 = 0 and S2 = 0:
Value 1 is issued
• S1 = 0 and S2 = 1:
Value 2 is issued
•
S1 = 1 and S2 = 0:
Value 3 is issued
• S1 = 1 and S2 = 1:
Value 4 is issued
Parameter V1...V4: Analog values that will be issued.
Range of values: -32768...+32767
p: Number of decimals
Range of values: 0, 1, 2, 3
$ᇄ
$4
(Q
6
6
3DU
Output AQ This special function has an analog output. This
output can only be connected with the analog input of
a function, an analog flag or an analog output
connector (AQ1, AQ2).
Range of values for AQ:
-32768...+32767