Omron SYSMAC CJ - REFERENCE MANUAL 08-2008 Reference Manual page 431

Data Shift Instructions
Description
Flags
Precautions
Examples
Area
EM Area with bank
Indirect DM/EM
addresses in binary
Indirect DM/EM
addresses in BCD
Constants
Data Registers
Index Registers
Indirect addressing
using Index Registers
SLD(074) shifts data between St and E by one digit (4 bits) to the left. "0" is
placed in the rightmost digit (bits 3 to 0 of St), and the content of the leftmost
digit (bits 15 to 12 of E) is lost.
Lost
Name
Error Flag
When St is greater than E, an error will be generated and the Error Flag will
turn ON.
Note When large amounts of data are shifted, the instruction execution time is quite
long. Be sure that the power is not cut while SLD(074) is being executed,
causing the shift operation to stop halfway through.
When CIO 000000 is ON, words CIO 0100 through CIO 0102 will shift by one
digit (4 bits) to the left. A zero will be placed in bits 0 to 3 of word CIO 0100
and the contents of bits 12 to 15 of CIO 0102 will be lost.
St
E
E: CIO 0102
Lost
St
En_00000 to En_32767
(n = 0 to C)
@ D00000 to @ D32767
@ E00000 to @ E32767
@ En_00000 to @ En_32767
(n = 0 to C)
*D00000 to *D32767
*E00000 to *E32767
*En_00000 to *En_32767
(n = 0 to C)
---
---
---
,IR0 to ,IR15
–2048 to +2047 ,IR0 to –2048 to +2047 ,IR15
DR0 to DR15, IR0 to IR15
,IR0+(++) to ,IR15+(++)
,–(– –)IR0 to, –(– –)IR15
E
Label
ER ON when St is greater than E.
OFF in all other cases.
St+1: CIO 0101
Section 3-9
E
S t
Operation
St: CIO 0100
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