Panasonic FP Series

Conversion instructions
189
Part II IEC Instructions
STRING_TO_UDINT
STRING (Decimal Format) into Unsigned DOUBLE INTEGER
First, the string is converted to a value of the data type STRING[32], which is subsequently
converted to a value of the data type UDINT in a subprogram with approximately 270 steps. This
subprogram is also used by the functions STRING_TO_INT, STRING_TO_WORD,
STRING_TO_UDINT and STRING_TO_DWORD.
To add an enable input and enable output to the instruction, select [With EN/ENO] from the
"Instructions" pane (LD, FBD or IL editor). To reuse an instruction select "Recently used" from the
context menu or press <Ctrl>+<Shift>+<v> in the programming window.
Acceptable Format:
'[Space][Sign][Decimal number][Space]', e.g. ' 123456 '
Acceptable characters:
Space Space “ “
Signs Plus “+” and minus “-“
Decimal
numbers
Decimal numbers "0“ - "9“
The analysis ends with the first non-decimal number.
PLC types
Availability of STRING_TO_UDINT (see page 1331)
Data type Comment
STRING Input
UDINT Output
Description
STRING_TO_UDINT converts a string in decimal format to a value of the data type Unsigned
DOUBLE INTEGER.
Data types
Example
In this example the function has been programmed in ladder diagram (LD) and structured text (ST).
POU header
All input and output variables used for programming this function have been declared in the POU
header.
LD
ST
When programming with structured text, enter the following:
UDINT_value := STRING_TO_UDINT(STRING_value);