This function block can be used for mathematical calculations. A formula with a maximum of 4 analog values can be calculated, the result will be provided at the output. An area of application is the determination of the level of a water tank. The formula is defined in the properties of the function block.
Table of Contents
Outputs↑
| Abbreviation | Summary | Description | Value Range |
|---|---|---|---|
| R | Result | ∞ | |
| E | Error | E.g. an illegal mathematical operation. | - |
Parameters↑
| Abbreviation | Summary | Description | Value Range | Default Value |
|---|---|---|---|---|
| I1-4 | Value 1-4 | This value can be used in the formula. A constant value can be also be set in properties. | ∞ | 0 |
Properties↑
| Summary | Description | Default Value |
|---|---|---|
| Formula | The 4 inputs are referred to as I1,I2,I3,I4. The following operands are available: +,-,*,/,^ The following functions are available: PI, ABS, SQRT, LN, LOG, EXP, SIN, COS, TAN, ARCSIN, ARCCOS, ARCTAN, SINH, COSH, TANH, RAD, DEG, SIGN, INT, IF, MIN, MAX Trigonometric functions use Radians as the unit of measure, inputs in degrees have to be converted first (e.g SIN(RAD(I1))). Example: (I1+(I2*0,005))/SIN(I3) |
- |
Supported Features↑
+ : Add
- : Subtract
* : Multiply
/ : Divide
^ : Power x^n
PI : PI (~3,14)
ABS : Absolute value ABS(I1) => |I1|
SQRT : Square Root SQRT(I1)
LN : natural logarithm with the base e LN (I1)
LOG : LOG logarithm base 10 LOG(I1)
EXP : Exponential Function EXP(I1) => e^I1
SIN : Sine SIN(I1)
COS : Cosine COS(I1)
TAN : Tangent TAN(I1)
ARCSIN : Arcsine ARCSIN(I1)
ARCCOS : Arc Cosine ARCCOS(I1)
ARCTAN : Arc Tangent ARCTAN(I1)
SINH : Hyperbolic Sine SINH(I1)
COSH : Hyperbolic Cosine COSH(I1)
TANH : Hyperbolic Tangent TANH(I1)
RAD : Angular representation in radians (360°=2PI)
DEG : Angle display in degrees (360°)
SIGN : Signum function (Sign Function) SIGN(I1)
INT : Integer function (removes decimals) INT(I1)
IF : If function, examples:
IF(I1 > 0;1;0)
IF(I1==0;0;1)
Comparison operators: == (equal), != (not equal), > (greater), >= (greater or equal), < (less), <= (less or equal)
MIN : Minimum function. Returns the smallest result of two expressions, examples:
MIN(I1;I2+10)
MAX : Maximum function. Returns the largest result of two expressions, examples:
MAX(I1*I2;100)