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6 BASIC INSTRUCTIONS
6.6 Data Conversion Instructions
Processing details
• These instructions convert the character strings stored in the device numbers specified by (s) and later to 16-bit binary
data, and store the number of digits in (d1) and converted binary data in the device specified by (d2). For conversion of
character strings to binary data, the data from the device number specified by (s) to the device number containing "00H" is
processed as character strings.
Ex.
When a string "-123.45" (signed) is stored in the device specified by (s) or later
• The total number of characters of the character string stored in the device specified by (s) is 2 to 8.
• Of the character string stored in the device specified by (s), the number of characters in the decimal part is 0 to 5. Note,
however, that the number must not exceed the total number of digits minus 3.
• A numerical character string that can be converted to binary data ranges from -32768 to 32767 when a signed value is
specified ignoring the decimal point or from 0 to 65535 when an unsigned value is specified. Numerical character strings
excluding signs and decimal points can be specified only within the range from 30H to 39H. (A value ignoring the decimal
point
"-12345.6" for example becomes "-123456".)
• For the sign, "20H" can be set to indicate a positive numerical value, or "2DH" can be set to indicate a negative numerical
value.
• "2EH" is set for the decimal point.
• The total number of digits stored in the device specified by (d1) includes all characters (including signs and decimal points)
that represent a numerical value. The number of digits in the decimal part to be stored in the device specified by (d1)+1
represents the decimal part after 2EH(.) For the 16-bit binary data to be stored in the device specified by (d2), the character
string is converted to binary data by ignoring the decimal point and stored.
• If "20H" (space) or "30H" (0) exists between the sign and the first numerical value other than 0 in the character string in the
device specified by (s), the instruction performs conversion to binary data by ignoring "20H" and "30H".
Ex.
When "20H" exists between the sign and the first numerical value other than 0 (when a signed value is specified)
ASCII S: ASCII code (sign data)
ASCII
: ASCII code (
th character)
(s)
(s)+1
(s)+2
(s)+3
(s)+4
b15
b0
∙∙∙
∙∙∙
b7
b8
(d1)
(d1)+1
.
00H
(d2)
-
ASCII 1
ASCII 3
ASCII 5
ASCII S
ASCII 2
ASCII 4
ASCII 7
ASCII 6
BIN16
∙∙∙
Total number of digits
Number of digits in
the decimal part
Integer value ignoring
the decimal point
Sign
1st character
7th character
Null character (end of string)
(s)
(s)+1
(s)+2
(s)+3
b15
b0
∙∙∙
∙∙∙
b7
b8
(d1)
(d1)+1
.
(d2)
7
2
- 1 2 3 4 5
- 1 2 3
4 5
31H (1)
33H (3)
34H (4)
2DH (-)
32H (2)
2EH (.)
00H
35H (5)
1 2 3 . 4 5
-
1 2 3
8
2
4 5
-
BIN16
Total number of digits
Number of digits in
the decimal part
Ignored.
Содержание MELSEC iQ-R Series
Страница 1: ...MELSEC iQ R Programming Manual Instructions Standard Functions Function Blocks ...
Страница 2: ......
Страница 24: ...22 INDEX 2092 INSTRUCTION INDEX 2093 REVISIONS 2104 WARRANTY 2105 TRADEMARKS 2106 ...
Страница 34: ...32 MEMO ...
Страница 35: ...33 PART 1 PART 1 OVERVIEW This part consists of the following chapter 1 OVERVIEW ...
Страница 68: ...66 1 OVERVIEW 1 5 Precautions on Programming MEMO ...
Страница 204: ...202 5 SEQUENCE INSTRUCTIONS 5 3 Output Instructions Operation error There is no operation error ...
Страница 470: ...468 6 BASIC INSTRUCTIONS 6 6 Data Conversion Instructions Operation error There is no operation error ...
Страница 472: ...470 6 BASIC INSTRUCTIONS 6 6 Data Conversion Instructions Operation error There is no operation error ...
Страница 479: ...6 BASIC INSTRUCTIONS 6 6 Data Conversion Instructions 477 6 Operation error There is no operation error ...
Страница 504: ...502 6 BASIC INSTRUCTIONS 6 7 Data Transfer Instructions Operation error There is no operation error ...
Страница 518: ...516 6 BASIC INSTRUCTIONS 6 7 Data Transfer Instructions Operation error There is no operation error ...
Страница 520: ...518 6 BASIC INSTRUCTIONS 6 7 Data Transfer Instructions Operation error There is no operation error ...
Страница 754: ...752 7 APPLICATION INSTRUCTIONS 7 9 Real Number Instructions Operation error There is no operation error ...
Страница 756: ...754 7 APPLICATION INSTRUCTIONS 7 9 Real Number Instructions Operation error There is no operation error ...
Страница 758: ...756 7 APPLICATION INSTRUCTIONS 7 9 Real Number Instructions Operation error There is no operation error ...
Страница 760: ...758 7 APPLICATION INSTRUCTIONS 7 9 Real Number Instructions Operation error There is no operation error ...
Страница 895: ...7 APPLICATION INSTRUCTIONS 7 16 Ramp Signal Instruction 893 7 Operation error There is no operation error ...
Страница 917: ...7 APPLICATION INSTRUCTIONS 7 20 Data Processing Instructions 915 7 Operation error There is no operation error ...
Страница 919: ...7 APPLICATION INSTRUCTIONS 7 20 Data Processing Instructions 917 7 Operation error There is no operation error ...
Страница 1415: ...13 SFC PROGRAM INSTRUCTIONS 13 1 SFC Control Instructions 1413 13 Operation error There is no operation error ...
Страница 1448: ...1446 14 REDUNDANT SYSTEM INSTRUCTIONS 14 2 Disabling Enabling System Switching MEMO ...
Страница 1795: ...25 TYPE CONVERSION FUNCTIONS 25 1 Converting BOOL to WORD 1793 25 Operation error There is no operation error ...
Страница 1805: ...25 TYPE CONVERSION FUNCTIONS 25 10 Converting WORD to DINT 1803 25 Operation error There is no operation error ...
Страница 1819: ...25 TYPE CONVERSION FUNCTIONS 25 21 Converting INT to DWORD 1817 25 Operation error There is no operation error ...
Страница 1950: ...1948 32 STRING FUNCTIONS 32 2 Extracting String Data From the Left Right Operation error There is no operation error ...
Страница 1972: ...1970 33 TIME DATA TYPE FUNCTIONS 33 4 Division MEMO ...
Страница 2067: ...APPX Appendix 5 PID Control Program Examples 2065 A 252 Set PID control data for loop 2 ...
Страница 2082: ...2080 APPX Appendix 6 Process Control Program Examples 129 Set the default value of the loop tag ...
Страница 2093: ...APPX Appendix 7 List of Loop Tag Memory Areas Used by Process Control Instructions 2091 A MEMO ...
Страница 2109: ......