Applicable program areas operands, Flags function sample program, 2 instructions – Omron SYSMAC CP CP1E-N@@D@-@ User Manual
Page 169: Operand specifications
2-133
2 Instructions
CP1E CPU Unit Instructions Reference Manual(W483)
Data Sh
ift I
n
stru
ctio
ns
2
ASL
ASL
Applicable Program Areas
Operands
Operand Specifications
Flags
Function
Sample program
Instruction
Mnemonic
Variations
Function
code
Function
ARITHMETIC SHIFT LEFT
ASL
@ASL
025
Shifts the contents of Wd one bit to the left.
Symbol
ASL
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.
ASL(025) shifts the contents of Wd one bit to
the left (from rightmost bit to leftmost bit). “0”
is placed in the rightmost bit and the data
from the leftmost bit is shifted into the Carry
Flag (CY).
When CIO 0.00 is ON, CIO 100 will be
shifted one bit to the left. “0” will be placed in
CIO 100.00 and the contents of CIO 100.15
will be shifted to the Carry Flag (CY).
ASL(025)
Wd
Wd: Word
0
0
15
0
15
CY
ASL
100
0.00
Wd
0
15
1 0 0 1 0 0 0 1 0 0 0 1 0 0 0 1
0
CY
0 0 1
1
0 0 0 1 0 0 0 1 0 0 0
0
1
Wd: 100CH