West Control Solutions KS98-1 - Manual (Page 134)

III-7 Selecting and storage
III-7.1 EXTR ( extreme value selection (No. 30))
Analog inputs x1, x2 and x3 are sorted according to their instantaneous values and provided at outputs Max,
Mid and Min. Input value output is at Max for the highest one, at Mid for the medium one and at Min for the
smallest one.
The number of the input with the highest value is output at MaxNo.
The number of the input with the medium value is provided at output MidNo.
The number of the input with the smallest value is provided at output MinNo.
+ With equality, the distribution is at random. Inputs are not included into the extreme value selection, if:
-the input is not wired
-or the input value is higher than 1,5 . 10 37 or smaller than -1,5 . 10 37 .
Number of
failed inputs
Max Mid Min MaxNo MidNo MinNo
0 x
max
x
mid
x
min
number of x
max
number of x
mid
number of x
min
1 x
max
x
min
number of x
max
number of x
min
2 the valid value number of the valid value
3 1,5
. 1037
1,5
. 1037
1,5
. 1037
0 0 0
Inputs/outputs
Analog inputs
x1
...
x3
Input variables to be compared
Analog outputs
Max Maximum instantaneous input value
Mid Mean instantaneous input value
Min Minimum instantaneous input value
MaxNo Number of maximum instantaneous input value (1 = x1, 2= x2, 3= x3)
MidNo Number of mean instantaneous input value (1 = x1, 2= x2, 3= x3)
MinNo Number of minimum instantaneous input value (1 = x1, 2= x2, 3= x3)
9499-040-82711 Selecting and storage
EXTR ( extreme value selection (No. 30)) III-134
Max
MaxNo
Mid
MidNo
Min
MinNo
y1>y2>y3 x1
x2
x3