C Control The I Unit-M Advanced 5 Vdc Inputs / outputs 16 x digital I/Os / 8 x analogue or digital I/Os Program memory 2 198805 Datenbogen

Produktcode

198805

FUNCTIONS WITH PARAMETER RETURN

A function also can return a float value if the return value is assigned to a help variable (in this example
MyFunction) that is named equal to the function itself (here MyFunction) The help variable must dot be
declared seperately.

Review the example

4_FUNCTION_1 and 2 for details.

FUNCTION MyFunction(FVAL1 as FLOAT,FVAL2 as FLOAT)
. . . . . . .
MyFunction=FVAL1*FVAL2
. . . . . . .
END FUNCTION

'------------ FUNCTION AUFRUF MIT RÜCKGABE ------------------------
FLOATVAR=MyFunction(10.9, 33.0)

MATH OPERATIONS

The overview shows the operations that are integrated to the operating system, and therefore executed with
maximum speed. Other operations are available as extension, but are executed as BASIC Code. The
functions are provided at the FLOTMATH.BLIB and described her in this document it the capter FLOATING
POINTMATH BASIC++ LIBRARY

Overview:

MULTIPLY
DIVIDE
ADD
SUBTRACT
SQRT
SIN
COS
ABS
<, >, =, <=, >=

Please review the example program 5_STANDARD_FLOAT_MATH.BAS

MULTIPLY, DIVIDE, ADD, SUBTRACT

For a multiply demo a conversion of a analog value (given by an ADC) to the true physical value is well
suited. The result is shown at the LCD, limited to 4 digits after decimal point. The secons sample is a
compare that show how much more lines a program has, doing the equivalent conversion with integer
calculations.