1227
Text String Processing Instructions Section 3-33
Operand Specifications
Description LEFT$(652) reads the number of characters designated by S2, from the left
(the beginning) of the first word of the text string designated by S1 until the
NUL code (00 hex), and outputs the result to D (with NUL added at the end).
If the number of characters fetched exceeds the number of characters desig-
nated by S1, the entire S1 text string will be output.
If 0 (0000 hex) is designated as the number of characters to be read, the two
NUL characters (0000 hex) will be output to D.
Note LEFT$(652) can be processed in the background. Refer to the SYSMAC CS/
CJ/NSJ Series PLC Programming Manual (W394) for details.
Area S1 S2 D
CIO Area CIO 0000 to CIO 6143
Work Area W000 to W511
Holding Bit Area H000 to H511
Auxiliary Bit Area A000 to A447
A448 to A959
A448 to A959
Timer Area T0000 to T4095
Counter Area C0000 to C4095
DM Area D00000 to D32767
EM Area without bank E00000 to E32767
EM Area with bank En_00000 to En_32767
(n = 0 to C)
Indirect DM/EM
addresses in binary
@ D00000 to @ D32767
@ E00000 to @ E32767
@ En_00000 to @ En_32767
(n = 0 to C)
Indirect DM/EM
addresses in BCD
*D00000 to *D32767
*E00000 to *E32767
*En_00000 to *En_32767
(n = 0 to C)
Constants --- #0000 to #0FFF
(binary) or &0 to
&4095
---
Data Registers --- DR0 to DR15 ---
Index Registers ---
Indirect addressing
using Index Registers
,IR0 to ,IR15
–2048 to +2047 ,IR0 to –2048 to +2047 ,IR15
DR0 to DR15, IR0 to IR15
,IR0+(++) to ,IR15+(++)
,–(– –)IR0 to, –(– –)IR15
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