Lenze PLC Designer PLC Designer (R3-1) - Manual (Page 1069)

L-force | PLC Designer
Programming Reference

DMS 4.1 EN 03/2011 TD29 1067
Examples in FBD:
( *Result is TRUE *)
(* Result is FALSE *)
(* Result is TRUE *)
(* Result is TRUE *)
Examples in St:
b := BYTE_TO_BOOL(2#11010101); (* Result is TRUE *)
b := INT_TO_BOOL(0); (* Result is FALSE *)
b := TIME_TO_BOOL(T#5ms); (* Result is TRUE *)
b := STRING_TO_BOOL('TRUE'); (* Result is TRUE *)
Conversion between Integral Number Types
Conversion from an integral number type to another number type.
Syntax for the conversion operator:
<INT data type>_TO_<INT data type>
When you perform a type conversion from a larger to a smaller type, you risk losing
some information. If the number you are converting exceeds the range limit, the first
bytes for the number will be ignored.
Beispiel in ST:
si := INT_TO_SINT(4223); (* Result is 127 *)
If you save the integer 4223 (16#107f represented hexadecimally) as a SINT variable, it
will appear as 127 (16#7f represented hexadecimally).
Beispiel in AWL:
Beispiel in FUP: