Rol - Omron SYSMAC CP Series Instruction & Reference Manual

ROL

Instruction
ROTATE LEFT
Symbol
Applicable Program Areas
Area Step program areas
Usage OK
Operands
Operand
Wd Word
Operand Specifications
Word addresses
Area
CIO WR HR
Wd OK OK OK
Flags
Name
Error Flag
Equals Flag
Carry Flag
Negative Flag
Function
ROL(027) shifts all bits of Wd including the
Carry Flag (CY) to the left (from rightmost bit
to leftmost bit).
Hint
It is possible to set the Carry Flag contents to 1 or 0 immediately before executing this instruction, by
using the Set Carry (STC(040)) or Clear Carry (CLC(041)) instructions.
CP1E CPU Unit Instructions Reference Manual(W483)
Mnemonic Variations
ROL @ROL
Description
AR T C DM
OK OK OK OK
Label
P_ER OFF
P_EQ • ON when the shift result is 0.
• OFF in all other cases.
P_CY • ON when 1 is shifted into the Carry Flag (CY).
• OFF in all other cases.
P_N • ON when the leftmost bit is 1 as a result of the shift.
• OFF in all other cases.
Function
code
Shifts all Wd bits one bit to the left
027
including the Carry Flag (CY).
ROL
ROL(027)
Wd Wd: Word
Subroutines
OK
Data type
UINT
Indirect DM addresses
Constants
@DM *DM
OK OK ---
Operation
CY 15 14
2 Instructions
Function
Interrupt tasks
OK
Size
1
CF Pulse bits TR bits
--- --- ---
1 0
2-135
2