Automationdirect.com DL06 - Page 285

DL06 Micro PLC User Manual, 3rd Edition, Rev. E
5-124
Chapter 5: Standard RLL Instructions
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A
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Rotate Right (ROTR)
Rotate Right is a 32-bit instruction that rotates the bits in the
accumulator a specified number (Aaaa) of places to the right.
In the following example, when X1 is on, the value in V1400 and V1401 will be loaded into the
accumulator using the Load Double instruction. The bit pattern in the accumulator is rotated
2 bit positions to the right using the Rotate Right instruction. The value in the accumulator is
copied to V1500 and V1501 using the Out Double instruction.
ROTR
A aaa
Handheld Programmer Keystrokes
Direct SOFT Display
LDD
V1400
X1
Load the value in V1400 and
V1401 into the accumulator
ROTR
K2
The bit pattern in the
accumulator is rotated 2
bit positions to the right
OUTD
V1500
Copy the value in the
accumulator to V1500
and V1501
0011000100000001
V1500
01001100010000000000010000000000
15 14 13 12 11 10 987654321031 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
4C4 0
0101100111000001
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
0110011100000101
15 14 13 12 11 10 9876543210
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 1631 30 29 28 27 26 25 24 23 22 21 20 19 18 17
16
Acc.
Acc.
V1501
59C 1
670 5 310 1
V1400V1401
STR
$
SHFT
ANDST
L
3
D
3
D
SHFT
ORN
R
MLR
T
ORN
R
ENT
OUT
GX
SHFT
3
D
1
B
ENT
INST#
O
ENT
1
B
4
E
0
A
0
A
ENT
2
C
1
B
5
F
0
A
0
A
Operand Data Type DL06 Range
A
aaa
V-memory V See memory map
Constant K 1-32
Discrete Bit Flags Description
SP63 On when the result of the instruction causes the value in the accumulator to be zero.
SP70 On anytime the value in the accumulator is negative.
DS Used
HPP Used
DirectSOFT