Panasonic FP Series Programming Manual page 249

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Table of Contents

Conversion instructions

STRING_TO_IPADDR

This function converts a STRING in IP address format into a value of the data type DWORD.

Thereby the attached string is first converted to a value of the data type STRING[32]. Finally this is

converted to a value of the data type DWORD via a sub-programm of approx. 330 steps that is also

used in the functions STRING_TO_IPADDR and STRING_TO_ETLANADDR.

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.

See also: STRING_TO_IPADDR_STEPSAVER (see page 248)

Permissible format:

'[Space]Octet1.Octet2.Octet3.Octet4[Space]', e.g.: ' [192.168.206.4] '

Permissible characters:

Availability of STRING_TO_IPADDR (see page 1331)

 The analysis ends with the first non-decimal number after the 4th octet

or in case of a format error.

 If the format is wrong the result is 0.

 The conversion is such that the first octet represents the lowest byte

of the IP address and the fourth octet the highest byte of the ET-LAN

address. The format corresponds to the standard format as used in

"Standard Socket Application Interfaces", for example.

STRING to IP Address

All characters except for decimal numbers

Decimal numbers "0"-"9", maximal 3 positions, with or without leading

zeros in the range 0-255

input variable

output variable