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API
Mnemonic
30
D
ROR
Type
Bit Devices
X
Y
M
OP
D
n
Operands:
D: Device to be rotated
Explanations:
1.
If D is used in device F, only 16-bit instruction is applicable.
2.
If D is designated as KnY, KnM, and KnS, only K4 (16-bit) and K8 (32-bit) are valid.
3.
Range of n: K1 ~ K16 (16-bit); K1 ~ K32 (32-bit)
4.
See the specifications of each model for their range of use.
5.
Flag: M1022 (carry flag)
6.
This instruction rotates the device content designated by D to the right for n bits.
7.
This instruction adopts pulse execution instructions (RORP, DRORP).
Program Example:
When X0 = Off→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.
X0
Rotate to the right
h igher bit
0 1 1
1
1 0
D10
h igher bit
0
1
0
1 0 1 1
D10
6-46
Operands
P
Word Devices
S
K H KnX KnY KnM KnS T C D E F
*
*
*
*
PULSE
ES EX SS SA SX SC EH SV ES EX SS SA SX SC EH SV ES EX SS SA SX SC EH SV
n: Number of bits to be rotated in 1 rotation
RORP
D10
K4
lower bit
1
1 0 1
0 0
0
1
0 1
16 bits
After one rotation
to the right
lower bit
1
1 0
1
1
0 1
0
0
6 Application Instructions API 00-49
Function
Rotation Right
ROR, RORP: 5 steps
*
*
*
*
*
*
DROR, DRORP: 9 steps
16-bit
Carry
flag
0
Carry
flag
Controllers
ES/EX/SS SA/SX/SC EH/SV
Program Steps
32-bit
DVP-PLC Application Manual
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