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

Review the sample program 2_FP_CONVERSION

LOOPS WITH FLOAT VARIABLES

FOR TO NEXT loops will not work together with FP variables. This does not matter because it is possible to
use DO LOOP UNTIL and here it is possible to create loops working with all valid floating point values.

DO
. . . . .
. . . . .

LOOP UNTIL (COUNTER>ENDVALUE)

The end condition may not consist of terms or constants
LOOP UNTIL (COUNTER>123456) is not allowed

Example:

'*********************************************************************
'***     LOOP WITH MIT FLOAT VARIABLES        ***
'*********************************************************************
COUNTER=123.4567
ENDVALUE=999.567

'---- FOR COUNTER=123.4567 TO 999.567 STEP 0.123 ----

DO
COUNTER=COUNTER+0.123
LCD.POS 1,1
LCD.PRINT COUNTER & "         "
LOOP UNTIL COUNTER>ENDVALUE

FUNCTIONS WITH PARAMETERS

The function calls are equally done with word or bytes. Parameters may also be mixed types.

FUNCTION MyFunction(FVAL1 as FLOAT,FVAL2 as FLOAT)
. . . . . . .
. . . . . . .

END FUNCTION

Because the memory usage is very intesive, when using float variables it is recommended to use referenced
float values as local variables. This means different variables as here in the example INPUT and WERT
share a memory location (FVALUE in this example).

define FVALUE as FLOAT

FUNCTION ABC(INPUT ref FVALUE)
RESULT=RESULT*INPUT
END FUNCTION

FUNCTION XYZ(WERT ref FVALUE)
RESULT=RESULT*WERT
END FUNCTION