Applicable program areas operands, Flags function hint, 2 instructions – Omron SYSMAC CP CP1E-N@@D@-@ User Manual
Page 171: Operand specifications
2-135
2 Instructions
CP1E CPU Unit Instructions Reference Manual(W483)
Data Sh
ift I
n
stru
ctio
ns
2
R
O
L
ROL
Applicable Program Areas
Operands
Operand Specifications
Flags
Function
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.
Instruction
Mnemonic
Variations
Function
code
Function
ROTATE LEFT
ROL
@ROL
027
Shifts all Wd bits one bit to the left
including the Carry Flag (CY).
Symbol
ROL
Area
Step program areas
Subroutines
Interrupt tasks
Usage
OK
OK
OK
Operand
Description
Data type
Size
Wd
Word
UINT
1
Area
Word addresses
Indirect DM addresses
Constants
CF
Pulse bits
TR bits
CIO
WR
HR
AR
T
C
DM
@DM
*DM
Wd
OK
OK
OK
OK
OK
OK
OK
OK
OK
---
---
---
---
Name
Label
Operation
Error Flag
P_ER
OFF
Equals Flag
P_EQ
• ON when the shift result is 0.
• OFF in all other cases.
Carry Flag
P_CY
• ON when 1 is shifted into the Carry Flag (CY).
• OFF in all other cases.
Negative Flag
P_N
• ON when the leftmost bit is 1 as a result of the shift.
• OFF in all other cases.
ROL(027) shifts all bits of Wd including the
Carry Flag (CY) to the left (from rightmost bit
to leftmost bit).
Wd: Word
ROL(027)
Wd
0
15 14
1
CY