Automationdirect.com DL06 - Page 284

DL06 Micro PLC User Manual, 3rd Edition, Rev. E
5-123
Chapter 5: Standard RLL Instructions
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14
A
B
C
D
Rotate Left (ROTL)
Rotate Left is a 32-bit instruction that rotates the bits in the
accumulator a specified number (Aaaa) of places to the left.
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 left using the Rotate Left instruction. The value in the accumulator is
copied to V1500 and V1501 using the Out Double instruction.
NOTE: Status flags are valid only until another instruction uses the same flag.
ROTL
A aaa
DirectSOFT32 Display
Handheld Programmer Keystrokes
STR
$
SHFT
ANDST
L
3
D
3
D
SHFT
ORN
R
MLR
T
ANDST
L
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
X1
LDD
V1400
ROTL
K2
OUTD
V1500
Load the value in V1400 and
V1401 into the accumulator
The bit pattern in the
accumulator is rotated 2
bit positions to the left
Copy the value in the
accumulator to V1500
and V1501
17
00000000001 1111
1
1618192021222324252627282930
31
9C14
V1501
Acc.
Acc.
1
10000000010 0101
1
0234567891011121314
15
C405
V1500
10000011110 0001
11
0000010100 0010 0
17 161819202122232425262728293031 10234567891011121314
15
67 0
53101
V1401 V1400
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