West Control Solutions KS98-1 - Manual (Page 93)

III-1.5 SCAL ( scaling (No. 09))
y a x a Exp
1 1 0
= × +
( )
Input variable x1 is multiplied by factor a and added to constant a0.
The result ( a w x1 + a0) is set to the power Exp.
If x1 is not used, this is interpreted as x1=0. With Exp = 0 SCAL outputs 1.
Parameter Description Range Default
a Multiplication factor -29 999...999 999 1
a0 Offset -29 999...999 999 0
Exp Exponent -7...7 1
Example: y x x x
1 1
2
3
1 1
0,6 2
3 = = =
+ This function block should be used only, if the exponential function is needed. Factor a and the offset a0 are also avai -
lable with functions that need less calculating time (e.g. ADSU, MUDI, ABSV).
III-1.6 10EXP (10s exponent (No. 10))
y x
1
1 10 =
Input value x1 is calculated according to formula y x
1
1 10 =
and output at the y1 output.
An unwired x1 is interpreted as x1 = 0 (in this case y1 is 1).
If the value at input x1 is higher than 36,7, an overflow may occur. In this case, output y1 is set to 1.5
w
10 37 rather
than forming the power.
g
Note:
10EXP is the reversal function of function LG10.
9499-040-82711 Scaling and calculating functions
SCAL ( scaling (No. 09)) III-93
x1 y1
a0 a Exp
EXP
x1 y1
10
x1