FP_BIN_TO_ASCII

Binary -> ASCII conversion

This FP instruction converts 16-bit/32-bit binary data stored in the area specified by s2_BinaryData to ASCII code. The conversion method is specified by the control string of s1_Format. The converted result is stored in the area specified by d_AsciiData.

Parameters

Input

s1_Format (STRING): Control and format string set in inverted commas
s2_BinaryData (BOOL, INT, UINT, WORD, DINT, UDINT, DWORD, REAL, DATE, TOD, DT, STRING): Starting address for storing binary data
n_Conversions (WORD, INT, UINT): Quantity of numbers to be converted: 0–65535
n_AsciiDataStartPosition (INT): Starting position in ASCII data: 0–255

Output

d_AsciiData (BOOL, INT, UINT, WORD, DINT, UDINT, DWORD, REAL, DATE, TOD, DT, STRING): Starting address for storing ASCII data

Explanation of each digit of the control code s1_Format:

Description		s1_Format	16-bit PLCs	32-bit PLCs
Conversion direction
+	forward (only for hexadecimal numbers with specifier x, X)	`'+%4X'`	●	●
	if plus sign is omitted: reverse (default setting)	`'%4X'`	●	●
%	format string specifier (mandatory)		●	●
Padding format
0	fill with zeros	`'%06x'`	-	●
+	add a plus sign	`'%+4d'`	-	●
-	left alignment	`'%-6d'`	-	●
˽	(space) add a space instead of plus sign	`'%˽4d'`	-	●
#	insert 0x for hexadecimal numbers	`'%#4X'`	-	●
#	append always a decimal point for real number	`'%#8.0f'`	-	●
8	width of the ASCII data element	`'%08d'`	●	●
no width FP_BIN_TO_ASCII: required minimum width is assumed FP_ASCII_TO_BIN and FP_ASCII_CHECK: comma separator is required		`'%d,'`	-	●
Precision after decimal point
.5	any digit after decimal point	`'%8.5f'`	-	●
I	double length specifier e.g. specifier i with l = Ii -> DINT	`'+%4ld'`	●	●
Format specifier
i	INT	`'%10i'`	●	●
u	UINT	`'%10u'`	-	●
d	INT	`'%6d'`	●	●
x	hexadecimal lower case	`'+%4x'`	●	●
X	hexadecimal upper case	`'+%4X'`	●	●
b	BCD	`'+%5b'`	-	●
f	floating-point number	`'+%-6.2f'`	-	●
e	exponential 1.23e10	`'+%9.3e'`	-	●
E	exponential upper case 1.23E10	`'+%9.3E'`	-	●
g	floating or exponential	`'+%12g'`	-	●
G	floating or exponential upper case	`'+%9.3G'`	-	●
For FP_BIN_TO_ASCII: any string can be appended to the conversion e.g. `'PANA'` For FP_ASCII_TO_BIN and FP_ASCII_CHECK: only comma is allowed		`'+%8dPANA'`	-	●

● available on 16-bit/32-bit PLCs

Examples of control string s1_Format

Example: '+%4X' converts a binary value to a value with a width of four characters in upper case in forward direction (valid for 16-bit/32-bit PLCs)

Binary data

Conversion result in ASCII data

16#12A

'˽12A'
Example: '%4X' converts a binary value to a value with a width of four characters in upper case in reverse direction (valid for 16-bit/32-bit PLCs)

Binary data

Conversion result in ASCII data

16#B2A

'˽B2A'
Example: '%06d' converts a binary value to a value with a width of six characters, decimal value with three leading zeros (valid for 32-bit PLCs only)

Binary data

Conversion result in ASCII data

16#100

'000100'
Example: '%+4d' converts a binary value to a value with a width of four characters, decimal value, + sign added (valid for 32-bit PLCs only)

Binary data

Conversion result in ASCII data

100

'+100 ˽ ˽'
Example: '%-6d' converts a binary value to a value with a width of six characters, left aligned (valid for 32-bit PLCs only)

Binary data

Conversion result in ASCII data

100

'100˽ ˽ ˽'
Example: '%˽4d' converts a binary value to a value with a width of four characters with one leading space (valid for 32-bit PLCs only)

Binary data

Conversion result in ASCII data

100

'˽100'
Example: '%#8.0f' converts a binary value to a value with a width of eight characters, floating-point number, four leading spaces (valid for 32-bit PLCs only)

Binary data

Conversion result in ASCII data

123.45678

'˽ ˽ ˽ ˽123.'
Example: '%8.3f' converts a binary value to a value with a width of eight characters, three characters precision after decimal point (valid for 32-bit PLCs only)

Binary data

Conversion result in ASCII data

123.45599

'˽123.456'
Example: '+%10u' converts a binary value to a value with a width of 10 characters, seven leading spaces, unsigned integer (valid for 32-bit PLCs only)

Binary data

Conversion result in ASCII data

-100

'˽ ˽ ˽ ˽ ˽ ˽ ˽100'
Example: '%06d' converts a binary value to a value with a width of six characters with three leading spaces (valid for 16-bit/32-bit PLCs)

Binary data

Conversion result in ASCII data

100

'˽ ˽ ˽100'

Permissible range for the value before the specifier:

1–15 before specifiers d, ld, i, li

1–4 before specifier X

1–8 before specifier lX

if no width is specified, comma is appended e.g. '%d,' (valid for 32-bit PLCs only)

Binary data

Conversion result in ASCII data

100

'100,'
- FP_BIN_TO_ASCII: required minimum width is assumed
- FP_ASCII_TO_BIN and FP_ASCII_CHECK: comma separator is required
Example: '+%4ld' converts a binary value to a value with a width of four characters, requires DINT or DWORD for the converted result (valid for 16-bit/32-bit PLCs)

Binary data

Conversion result in ASCII data

100

'˽100'
Example: '+%6i' converts a binary value to a value with a width of six characters, three leading spaces, signed integer in forward direction (valid for 16-bit/32-bit PLCs)

Binary data

Conversion result in ASCII data

-100

'˽ ˽ ˽-100'
Example: '+%6d' converts a binary value to a value with a width of six characters with three leading zeros in forward direction (valid for 16-bit/32-bit PLCs)

Binary data

Conversion result in ASCII data

100

'000100'
Example: '+%4X' converts a binary value to a value with a width of four characters, hexadecimal number in upper case in forward direction (valid for 16-bit/32-bit PLCs)

Binary data

Conversion result in ASCII data

16#12A

'˽12A'
Example: '+%5b' converts a binary value to a value with a width of five characters, BCD data (valid for 32-bit PLCs only)

Binary data

Conversion result in ASCII data

16#123

'˽123'
Example: '+%-6.2f' converts a binary value to a value with a width of six characters, left aligned, precision two digits after decimal point (valid for 32-bit PLCs only)

Binary data

Conversion result in ASCII data

1.2345

'1.23˽'
Example: '+%9.3e' converts a binary value to a value with a width of 9 characters, precision 3 digits after decimal point, exponential lower case (valid for 32-bit PLCs only)

Binary data

Conversion result in ASCII data

1234.5678

'1.235e+03'
Example: '1.235E+03' converts a binary value to a value with a width of 9 characters, precision 3 digits after decimal point, exponential upper case (valid for 32-bit PLCs only)

Binary data

Conversion result in ASCII data

1234.5678

'1.235E+03'
Example: '+%12g' converts a binary value to a value with a width of 12 characters, floating-point number (valid for 32-bit PLCs only)

Binary data

Conversion result in ASCII data

1234.5678

'˽ ˽ ˽ ˽ ˽1234.57'
Example: '+%9.3G' converts a binary value to a value with a width of nine characters, precision three characters after decimal point, floating-point number, exponential upper case (valid for 32-bit PLCs only)

Binary data

Conversion result in ASCII data

1234

'˽ ˽ ˽1.E+03'
For FP_BIN_TO_ASCII: any string can be appended to the conversion

Example: '+%8dPANA' converts a binary value to a value with a width of eight characters, decimal number, 'PANA' is appended (valid for 32-bit PLCs only)

Binary data

Conversion result in ASCII data

100

'˽ ˽ ˽ ˽ ˽100PANA'

Binary data	Conversion result in ASCII data
16#12A	'˽12A'

Binary data	Conversion result in ASCII data
16#B2A	'˽B2A'

Binary data	Conversion result in ASCII data
16#100	'000100'

Binary data	Conversion result in ASCII data
100	'+100 ˽ ˽'

Binary data	Conversion result in ASCII data
100	'100˽ ˽ ˽'

Binary data	Conversion result in ASCII data
100	'˽100'

Binary data	Conversion result in ASCII data
123.45678	'˽ ˽ ˽ ˽123.'

Binary data	Conversion result in ASCII data
123.45599	'˽123.456'

Binary data	Conversion result in ASCII data
-100	'˽ ˽ ˽ ˽ ˽ ˽ ˽100'

Binary data	Conversion result in ASCII data
100	'˽ ˽ ˽100'

Binary data	Conversion result in ASCII data
100	'100,'

Binary data	Conversion result in ASCII data
100	'˽100'

Binary data	Conversion result in ASCII data
-100	'˽ ˽ ˽-100'

Binary data	Conversion result in ASCII data
100	'000100'

Binary data	Conversion result in ASCII data
16#12A	'˽12A'

Binary data	Conversion result in ASCII data
16#123	'˽123'

Binary data	Conversion result in ASCII data
1.2345	'1.23˽'

Binary data	Conversion result in ASCII data
1234.5678	'1.235e+03'

Binary data	Conversion result in ASCII data
1234.5678	'1.235E+03'

Binary data	Conversion result in ASCII data
1234.5678	'˽ ˽ ˽ ˽ ˽1234.57'

Binary data	Conversion result in ASCII data
1234	'˽ ˽ ˽1.E+03'

Binary data	Conversion result in ASCII data
100	'˽ ˽ ˽ ˽ ˽100PANA'

Error flags

sys_bIsOperationErrorHold (turns to TRUE and remains TRUE)

if there is an error in the control string specified by sFormat.
if forward direction (+) is specified in sFormat when the format is decimal.
if the number of ASCII characters per converted unit specified by n_Conversions exceeds 4 for 16-bit data or 8 for 32-bit data when hexadecimal format is specified by s1_Format.
if 0 is specified for the no. of 16- or 32-bit (1- or 2-word) units to be converted in n_Conversions.
if the number of 16- or 32-bit decimal numbers to be converted specified by n_Conversions exceeds the area for storing ASCII data.
if the converted result exceeds the area.

sys_bIsOperationErrorNonHold (turns to TRUE for one scan)

if there is an error in the control string specified by sFormat.
if forward direction (+) is specified in sFormat when the format is decimal.
if the number of ASCII characters per converted unit specified by n_Conversions exceeds 4 for 16-bit data or 8 for 32-bit data when hexadecimal format is specified by s1_Format.
if 0 is specified for the no. of 16- or 32-bit (1- or 2-word) units to be converted in n_Conversions.
if the number of 16- or 32-bit decimal numbers to be converted specified by n_Conversions exceeds the area for storing ASCII data.
if the converted result exceeds the area.

Example

POU header

All input and output variables used for programming this function have been declared in the POU header. The same POU header is used for all programming languages.

	VAR
		bStart: BOOL:=FALSE;
		iArray1: ARRAY [0..1] OF INT:=[1234,-56];
		iAscii1: ARRAY [0..4] OF WORD:=[5(16#FFFF)];
	END_VAR

POU body

When the variable bStart changes from FALSE to TRUE, the function is carried out. It converts two 16-bit units to 2 x 4 decimal ASCII data. Offset = 1 ASCII character (8-bit).

LD body

BODY
    WORKSPACE
        NETWORK_LIST_TYPE := NWTYPELD ;
        ACTIVE_NETWORK := 0 ;
    END_WORKSPACE
    NET_WORK
        NETWORK_TYPE := NWTYPELD ;
        NETWORK_LABEL :=  ;
        NETWORK_TITLE :=  ;
        NETWORK_HEIGHT := 10 ;
        NETWORK_BODY
B(B_VARIN,,'%4d',10,5,12,7,);
B(B_VARIN,,iArray1,10,6,12,8,);
B(B_VARIN,,2,10,7,12,9,);
B(B_VAROUT,,iAscii1,25,5,27,7,);
B(B_CONTACT,,bStart,7,4,9,6,R);
B(B_COMMENT,,Converts two 16-bit units to 2x4 decimal ASCII data. Offset = 1 ASCII character (8-bit).,5,1,38,3,);
B(B_F,FP_BIN_TO_ASCII!,,12,3,25,10,,?DEN?hs1_Format?ds2_BinaryData?dn_Conversions?dn_AsciiDataStartPosition?AENO?cd_AsciiData);
B(B_VARIN,,1,10,8,12,10,);
B(B_COMMENT,,Result iAscii1: 'x1234 -56x',28,8,41,9,);
L(9,5,12,5);
L(1,5,7,5);
L(1,0,1,10);
        END_NETWORK_BODY
    END_NET_WORK
END_BODY

ST body

IF DF(bStart) then
    FP_BIN_TO_ASCII(s1_Format := '%4d', 
        s2_BinaryData := iArray1, 
        n_Conversions := 2, 
        d_AsciiData => iAscii1);
END_IF;