Double Shift Right: Asrl - Omron SYSMAC CJ - REFERENCE MANUAL 08-2008 Reference Manual

Data Shift Instructions
Description
Flags
Precautions
Examples
3-9-8

DOUBLE SHIFT RIGHT: ASRL(571)

Purpose
Ladder Symbol
374
Area
Index Registers
Indirect addressing
using Index Registers
ASR(026) shifts the contents of Wd one bit to the right (from leftmost bit to
rightmost bit). "0" will be placed in the leftmost bit and the contents of the
rightmost bit will be shifted into the Carry Flag (CY).
Name Label
Error Flag ER
Equals Flag =
Carry Flag CY
Negative Flag N
When ASR(026) is executed, the Error Flag and the Negative Flag will turn
OFF.
If as a result of the shift the contents of Wd is zero, the Equals Flag will turn
ON.
When CIO 000000 is ON, word CIO 0100 will shift one bit to the right. "0" will
be placed in CIO 010015 and the contents of CIO 010000 will be shifted to the
Carry Flag (CY).
Shifts the contents of Wd and Wd +1 one bit to the right.
ASRL(571)
Wd
Wd: Word
---
,IR0 to ,IR15
–2048 to +2047 ,IR0 to –2048 to +2047 ,IR15
DR0 to DR15, IR0 to IR15
,IR0+(++) to ,IR15+(++)
,–(– –)IR0 to, –(– –)IR15
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.
OFF
Wd
Section 3-9
Wd