Endress+Hauser Liquiline System CA80NO, Operating Instructions Manual

Page: 114 / 172

Operation Liquiline System CA80NO
114 Hauser
Symbol Operation Type of operands Type of result Example
SIN Sine Numerical Numerical SIN(A)
COS Cosine Numerical Numerical COS(B)
EXP Exponential function e x Numerical Numerical EXP(A)
LN Natural logarithm Numerical Numerical LN(B)
LOG Decadic logarithm Numerical Numerical LOG(A)
MAX Maximum of two values Numerical Numerical MAX(A,B)
MIN Minimum of two values Numerical Numerical MIN(20,B)
ABS Absolute value Numerical Numerical ABS(C)
NUM Boolean → numerical conversion Boolean Numerical NUM(A)
= Equals Boolean Boolean A=B
<> Not equal to Boolean Boolean A<>B
> Greater than Numerical Boolean B>5.6
< Less than Numerical Boolean A<C
OR Disjunction Boolean Boolean B OR C
AND Conjunction Boolean Boolean A AND B
XOR Exclusive disjunction Boolean Boolean B XOR C
NOT Negation Boolean Boolean NOT A
Menu/Setup/Additional functions/Mathematical functions/MF1 to 6/Mode = Formula
Function Options Info
Calculation Selection
• Off
• On
Factory setting
Off
On/off switch for the function
Source A ... C Selection
Select source
Factory setting
None
You can use all the sensor inputs, binary and
analog inputs, mathematical functions, limit
switches, timers, fieldbus signals, controllers and
data records for measuring range switching as
the source for measured values.
1. Choose a maximum of three sources (A, B
and C) for measured values.
2. For each source, choose the measured
value to be calculated.
 All available signals - depending on
the selected source - are possible
measured values.
3. Enter the formula.
4. Switch on the calculation.
 The current measured values A, B
and C as well as the result of the
calculation using the formula are
displayed.
Measured value Selection
Depends on the source
A ... C The current measured
value is displayed
Formula Free text Table →  113

Make sure the exact notation is used
(upper case). Blank spaces before and after
mathematical characters are irrelevant.
Note the operator precedence, i.e.
multiplication and division take
precedence over addition and subtraction.
Use parentheses if necessary.