F_FormatArgToStr

Format helper function. This function is used internally by the FB_FormatString function block. The function can be used to convert a variable of type T_Arg into a formatted string according to the format specification.

Return value

Name	Type	Description
F_FormatArgToStr	UDINT

Inputs

Name	Type	Description
bSign	BOOL	The sign flag.
bBlank	BOOL	The blank flag.
bNull	BOOL	The null flag.
bHash	BOOL	The hash prefix flag.
bLAlign	BOOL	The alignment flag (TRUE=left align).
bWidth	BOOL	If TRUE, the iWidth parameter is evaluated, otherwise not.
iWidth	INT	Width parameter.
iPrecision	INT	: Precision parameter.
eFmtType	E_TypeFieldParam	Type parameter (type: E_TypeFieldParam).
arg	T_Arg	The argument to be formatted. The following helper functions can be used to convert PLC variables of different types into the required data type T_Arg: F_BYTE, F_WORD, F_DWORD, F_LWORD, F_SINT, F_INT, F_DINT, F_LINT, F_USINT, F_UINT, F_UDINT, F_ULINT, F_STRING, F_REAL, F_LREAL.

/ Inputs/outputs

Name	Type	Description
sOut	T_MaxString	If successful, this variable returns the formatted output string (type: T_MaxString).

Return parameter	Meaning
0	No error
<> 0	Error. Error description can be found at: Format error codes

Examples:

Formatting a BYTE variable as a binary string.

The result:

s1 = '10000000'
s2 = '            10000000'
s3 = '10000000            '
s4 = '2#10000000          '
L1 = 8
L2 = 20
L3 = 20
L4 = 20

Formatting an LREAL variable.

The result:

s1 = '12345.67890000'
s2 = '      12345.67890000'
s3 = '12345.67890000      '
s4 = '00000012345.67890000'
s5 = '+12345.67890000     '
L1 = 14
L2 = 20
L3 = 20
L4 = 20
L5 = 20

Requirements

Development environment	Target platform	PLC libraries to be integrated (category group)
TwinCAT v3.1.0	PC or CX (x86, x64, Arm^®)	Tc2_Utilities (System)