AutomationDirect DL105, User Manual

Page: 224 / 350

Standard
RLL
Instructions
5--64
Standard RLL Instructions
Math Instructions
DL105 PLC User Manual, 3rd Edition
MUL
A aaa
Multiply is a 16 bit instruction that
multiplies the BCD value (Aaaa), which is
either a V--memory location or a 4--digit
(max.) constant, by the BCD value in the
lower 16 bits of the accumulator The
result can be up to 8 digits and resides in
the accumulator.
Operand Data Type DL130 Range
A aaa
V--memory V All (See page 4--29)
Constant K 0--9999
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.
SP75 On when a BCD instruction is executed and a NON--BCD number was
encountered.
NOTE: The status flags are only valid until another instruction that uses the same
flags is executed.
In the following example, when X1 is on, the value in V2000 will be loaded into the
accumulator using the Load instruction. The value in V2006 is multiplied by the value
in the accumulator. The value in the accumulator is copied to V2010 and V2011
using the Out Double instruction.
Direct SOFT
Handheld Programmer Keystrokes
LD
V2000
X1
Load the value in V2000 into
the lower 16 bits of the
accumulator
MUL
V2006
The value in V2006 is
multiplied by the value in the
accumulator
OUTD
V2010
Copy the value in the
accumulator to V2010 and
V2011
0 0 0 0 0 0 2
0 0 0
(Accumulator)
¢
0 0 0 0 1 0 0 0
5
(V2006)
V2010
5
1
V2000
0 0 0
V2010
0 0 0 2
2 5
The unused accumulator
bits are set to zero
Acc.
STR
$
SHFT
ANDST
L
3
D
SHFT
ORST
M
ISG
U
ANDST
L
OUT
GX
SHFT
3
D
1
B
ENT
2
C
0
A
0
A
0
A
ENT
2
C
0
A
0
A
ENT
6
G
2
C
0
A
1
B
0
A
ENT
Multiply
(MUL)