7 APPLICATION INSTRUCTIONS
7.20 Data Processing Instructions
907
7
Processing details
• These instructions search the (n) points in units of 16-bit binary data from the device specified by (s2) using the 16-bit
binary data in the device specified by (s1) as a keyword. Each instruction stores the number of data which matches the
keyword in the device specified by (d)+1 and also stores the relative value of the first-matched device number from (s2) in
the device specified by (d).
• If the value specified in (n) is 0, no processing is performed.
• If no matching data is found as the result of search, 0 is stored in the devices specified by (d) and (d)+1.
• If the data to be searched by the SERDATA(P) instruction has been sorted in ascending order, turning on
SM702
*1
enables a binary search which can process the search faster. If SM702 is turned on even though
the data to be search has not been sorted in ascending order, normal search results cannot be obtained.
The following figure shows an example of binary search.
*1 SM702 is a special relay for setting the search method.
SM702 is off: Sequential search (linear search)
This method compares the search data with the data to be searched for starting from the start of data
SM702 is on: Binary search
For the data that has been sorted in ascending order, this method checks the center value of the search range, determining whether the
center value is larger or smaller than the search value, and thereby narrows the search range to either side. Thus, target data is
searched for by repeating this processing.
Operation error
There is no operation error.
3
2
(d)+1
10
500
123
-123
20
(s2)+1
(s2)+2
(s2)+(n)-2
(s2)+(n)-1
123
123
123
123
(d)
(s1)
(s2)
Location
Number of matches
Search range:
(n) points
Search result
Data matched
Start device number of search range
Search data
Relative value
500
400
600
200
300
100
700
500
400
600
200
300
100
700
500
400
600
200
300
100
700
500
Search
range
Compared with
the search data
Search
range
Compared with
the search data
Search
range
Search data
Compared with
the search data
Data to be searched
Data to be searched
Data to be searched
Search order
Содержание MELSEC iQ-R Series
Страница 1: ...MELSEC iQ R Programming Manual Instructions Standard Functions Function Blocks ...
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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 ...
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