D-65
API
Mnemonic
Operands Function
30
ROR
P
D, n
Rotate to the Right
Type
OP
Bit Devices
Word devices
Program Steps
X
Y
M K
H KnX KnY KnM T C D ROR, RORP: 5 steps
D
*
*
*
*
*
n
* *
Operands:
D: Device to be rotated n: Number of bits to be rotated in 1 rotation
Explanations:
1.
This instruction rotates the device content designated by
D
to the right for
n
bits.
2.
This instruction adopts pulse execution instructions (RORP).
Program Example:
When X0 goes from Off to On, the 16 bits (4 bits as a group) in D10 will rotate to the right, as shown
in the figure below. The bit marked with
※
will be sent to carry flag M1022.
0 1 1
1 0
1 0 1
0
0 1
1
1
0 0
1
0
1 0 1 1
1 0
0 1
1
1
1
0
0
1
0
0
upper bit
lower bit
upper bit
lower bit
*
X0
RORP D10
K4
Rotate to the right
16 bits
Carry
flag
Carry
flag
After one rotation
to the right
D10
D10
