Omron CP - PROGRAMMING MANUAL 05-2007 Programming Manual page 324

Data Shift Instructions
Variations
Applicable Program Areas
Operand Specifications
Description
Flags
Precautions
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
Auxiliary Bit Area
Timer Area
Counter Area
DM Area
Indirect DM addresses
in binary
Indirect DM addresses
in BCD
Constants
Data Registers
Index Registers
Indirect addressing
using Index Registers
ROLL(572) shifts all bits of Wd and Wd +1 including the Carry Flag (CY) to
the left (from rightmost bit to leftmost bit).
Wd+1
Name Label
Error Flag ER
Equals Flag =
Carry Flag CY
Negative Flag N
When ROLL(572) is executed, the Error Flag will turn OFF.
If as a result of the shift the contents of Wd and Wd +1 are zero, the Equals
Flag will turn ON.
Step program areas Subroutines
OK
CIO 0 to CIO 6142
W0 to W510
H0 to H510
A448 to A958
T0000 to T4094
C0000 to C4094
D0 to D32766
@ D0 to @ D32767
*D0 to *D32767
---
---
---
,IR0 to ,IR15
–2048 to +2047 ,IR0 to –2048 to +2047 ,IR15
DR0 to DR15, IR0 to IR15
,IR0+(++) to ,IR15+(++)
,–(– –)IR0 to, –(– –)IR15
Wd
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.
Section 3-8
ROLL(572)
@ROLL(572)
Not supported
Interrupt tasks
OK
Wd
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