632
7 APPLICATION INSTRUCTIONS
7.8 String Processing Instructions
Processing details
• These instructions perform a comparison operation between the character string data in the device specified by (s1) and
the character string data in the device specified by (s2). (Devices are used as normally open contacts).
• In comparison operation, the ASCII code of character string is compared character by character from the beginning of the
character string.
• The character strings in the devices specified by (s1) and (s2) mean those in the device numbers from the specified one to
the one containing 00H.
• The comparison result turns out matching if all character strings match.
Instruction symbol (ladder, FBD/LD)
Result
$=, EQ
Continuity state (ENO is on.)
$<>, NE
Non-continuity state (ENO is off.)
$>, GT
Non-continuity state (ENO is off.)
$<=, LE
Continuity state (ENO is on.)
$<, LT
Non-continuity state (ENO is off.)
$>=, GE
Continuity state (ENO is on.)
• When different character strings are compared, the character string with a larger character code is greater.
Instruction symbol (ladder, FBD/LD)
Result
$=, EQ
Non-continuity state (ENO is off.)
$<>, NE
Continuity state (ENO is on.)
$>, GT
Continuity state (ENO is on.)
$<=, LE
Non-continuity state (ENO is off.)
$<, LT
Non-continuity state (ENO is off.)
$>=, GE
Continuity state (ENO is on.)
• When different character strings are compared, the relative size of a character string is determined by the relative size of the first different character codes.
Instruction symbol (ladder, FBD/LD)
Result
$=, EQ
Non-continuity state (ENO is off.)
$<>, NE
Continuity state (ENO is on.)
$>, GT
Non-continuity state (ENO is off.)
$<=, LE
Continuity state (ENO is on.)
$<, LT
Continuity state (ENO is on.)
$>=, GE
Non-continuity state (ENO is off.)
∙∙∙
∙∙∙
b15
(s1)
(s1)+1
(s1)+2
42H (B)
b8
41H (A)
b7
b0
43H (C)
44H (D)
45H (E)
00H
"ABCDE"
∙∙∙
∙∙∙
b15
(s2)
(s2)+1
(s2)+2
=
42H (B)
b8
41H (A)
b7
b0
43H (C)
44H (D)
45H (E)
00H
"ABCDE"
∙∙∙
∙∙∙
b15
(s1)
(s1)+1
(s1)+2
42H (B)
b8
41H (A)
b7
b0
43H (C)
44H (D)
46H (F)
00H
"ABCDF"
∙∙∙
∙∙∙
b15
(s2)
(s2)+1
(s2)+2
42H (B)
b8
41H (A)
b7
b0
43H (C)
44H (D)
45H (E)
00H
"ABCDE"
>
∙∙∙
∙∙∙
b15
(s1)
(s1)+1
(s1)+2
32H (2)
b8
31H (1)
b7
b0
33H (3)
34H (4)
35H (5)
00H
"12345"
∙∙∙
∙∙∙
b15
(s2)
(s2)+1
(s2)+2
32H (2)
b8
31H (1)
b7
b0
34H (4)
33H (3)
35H (5)
00H
<
"12435"
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 ...
Страница 2109: ......