Omron CJ - PROGRAMMING MANUAL 12-2009 - Page 199

159
Text String Processing Instructions
Section 3-31
EXCHANGE
STRING
XCHG$
@XCHG$
665
Output
Required
CLEAR STRING
CLR$
@CLR$
666
Output
Required
INSERT INTO
STRING
INS$
@INS$
657
Output
Required
String Compari-
son
LD, AND, OR +
=$, <>$, <$, <=$,
>$, >=$
670 (=$)
671 (<>$)
672 (<$)
673 (<=$)
674 (>$)
675 (>=$)
Sting comparison instructions (=$, <>$, <$, <=$, >$, >=$) compare two
text strings from the beginning, in terms of value of the ASCII codes. If
the result of the comparison is true, an ON execution condition is cre-
ated for a LOAD, AND, or OR.
LD: Not required
AND, OR:
Required
Instruction
Mnemonic
Code
Symbol/Operand Function Location
Execution condition
XCHG$(665)
Ex1
Ex2
Ex1: 1st
exchange word 1
Ex2: 1st
exchange word 2
Ex1
Ex1
Ex2
Ex2
Replaces a designated text string with another designated text string.
CLR$(666)
S
S: Text string first
word
S
S
AB
CD
NUL
NUL
Clears an entire text string with NUL (00 hex).
→→
INS$(657)
S1
S2
S3
D
S1: Base text
string first word
S2: Inserted text
string first word
S3: Beginning
position
D: First
destination word
NUL
Deletes a designated text string from the middle of a text string.
Inserted
characters
→→
→
LD
AND
OR
S1
S2
S1
S2
S1
S2
Symbol
Symbol
Symbol
S1: Text string 1
S2: Text string 2