Double Shift Left: Asll - Omron SYSMAC CJ - REFERENCE MANUAL 08-2008 Reference Manual

Data Shift Instructions
Flags
Precautions
Examples
3-9-6

DOUBLE SHIFT LEFT: ASLL(570)

Purpose
Ladder Symbol
Variations
Applicable Program Areas
Operand Specifications
Name Label
Error Flag ER
Equals Flag =
Carry Flag CY
Negative Flag N
When ASL(025) is executed, the Error Flag will turn OFF.
If as a result of the shift the contents of Wd is zero, the Equals Flag will turn
ON.
If as a result of the shift the contents of the leftmost bit of Wd is 1, the Nega-
tive Flag will turn ON.
When CIO 000000 is ON, CIO 0100 will be shifted one bit to the left. "0" will
be placed in CIO 010000 and the contents of CIO 010115 will be shifted to the
Carry Flag (CY).
Shifts the contents of Wd and Wd +1 one bit to the left.
ASLL(570)
Wd
Variations Executed Each Cycle for ON Condition
Executed Once for Upward Differentiation
Executed Once for Downward Differentiation Not supported
Immediate Refreshing Specification
Block program areas
OK OK
Area
CIO Area
Work Area
Holding Bit Area
Operation
OFF
ON when the shift result is 0.
OFF in all other cases.
ON when 1 is shifted into the Carry Flag (CY).
OFF in all other cases.
ON when the leftmost bit is 1 as a result of the shift.
OFF in all other cases.
Wd
Wd: Word
Step program areas Subroutines
OK
CIO 0000 to CIO 6142
W000 to W510
H000 to H510
Section 3-9
ASLL(570)
@ASLL(570)
Not supported
Interrupt tasks
OK
Wd
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