A function calculates a result according to the current value of its inputs. A function has no internal data and is not linked to declared instances. - Converts string to integer using hexadecimal basis
Inputs
IN : STRING String representing an integer in hexadecimal format
Outputs
Q : DINT Integer represented by the string
Truth table (examples)
| IN | Q |
|---|---|
|
'' |
0 |
|
'12' |
18 |
|
'a0' |
160 |
|
'A0zzz' |
160 |
Remarks
The function is case insensitive. The result is 0 for an empty string. The conversion stops before the first invalid character. In FFLD language, the operation is executed only if the input rung (EN) is TRUE. The output rung (ENO) keeps the same value as the input rung.
In IL"Instruction list"
This is a low-level language and resembles assembly, the
input must be loaded in the current result before calling the function.
ST Language
Q := ATOH (IN);
FBD Language
FFLD Language
(* The function is executed only if EN is TRUE *)
(* ENO keeps the same value as EN *)
IL Language:
See also
