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Reference material
5.3 Special functions
LOGO!Soft Comfort Online Help
Operating Instructions, 11/2017
285
You select the required function by the block number.
0BA4:
A
: Gain
Range of values 0.00 to 10.00
0BA2, 0BA3:
These parameters apply:
G: G
ain in [%]
Range of values 0% to
1000%
O
: Offset
Range of values
-999 to 999
On
: On threshold
Range of values 0 to 9999
Off
: Off threshold
Range of values 0 to 9999
Parameter p (number of decimals)
Parameter p applies only to the display of On, Off and Ax values in a message text.
Parameter p does not apply to the comparison of On and Off values. (The compare function
ignores the decimal point.)
Timing diagram
Description of the function
The function reads the value of the signal at the analog input Ax.
This value is multiplied by the value of parameter A (gain). Parameter B (offset) is added to
the product, hence
(Ax * Gain) + Offset = Actual value Ax.
Output Q is set or reset depending on the set threshold values. See the following calculation
rule.
0BA2, 0BA3:
The function
is as follows:
The offset parameter is added to the read analog value. The s
um is multiplied by
the value of the gain parameter.
Value = (AI+offset)*gain
Output Q is set to 1 if the calculated value exceeds the on threshold (TH high).
Q is reset to 0 when the value reaches or drops below the off threshold (TH low).
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