TO_BOOL Conversions

Conversion from another variable type to BOOL:

The result is TRUE when the operand is not equal to 0. The result is FALSE when the operand is equal to 0.

The result is true for STRING type variables when the operand is “TRUE”, otherwise the result is FALSE.

Examples in IL:

(*Result is TRUE *)
LD 213
BYTE_TO_BOOL
ST b

(*Result is FALSE *)
LD 0
INT_TO_BOOL
ST b

(*Result is TRUE *)
LD T#5ms
TIME_TO_BOOL
ST b

(*Result is TRUE *)
LD 'TRUE'
STRING_TO_BOOL
ST b

Examples in ST:

(* Result is TRUE *)
b := BYTE_TO_BOOL(2#11010101);

(* Result is FALSE *)
b := INT_TO_BOOL(0);

(* Result is TRUE *)
b := TIME_TO_BOOL(T#5ms);

(* Result is TRUE *)
b := STRING_TO_BOOL('TRUE');

Examples in FBD:

	Result is TRUE
	Result is FALSE
	Result is TRUE
	Result is TRUE