AutomationDirect DL105, Руководство пользователя

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Standard
RLL
Instructions
5--60
Standard RLL Instructions
Math Instructions
DL105 PLC User Manual, 3rd Edition
Math Instructions
ADD
A aaa
Add is a 16 bit instruction that adds a
BCD value in the accumulator with a
BCD value in a V--memory location
(Aaaa). The result resides in the
accumulator.
Operand Data Type DL130 Range
A aaa
V--memory V All (See page 4--29)
Discrete Bit Flags Description
SP63 On when the result of the instruction causes the value in the accumulator
to be zero.
SP66 On when the 16 bit addition instruction results in a carry.
SP67 On when the 32 bit addition instruction results in a carry.
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 the lower 16 bits of the
accumulator are added to the value in V2006 using the Add instruction. The value in
the accumulator is copied to V2010 using the Out instruction.
Direct SOFT
Handheld Programmer Keystrokes
LD
V2000
X1
Load the value in V2000 into
the lower 16 bits of the
accumulator
ADD
V2006
Add the value in the lower
16 bits of the accumulator
with the value in V2006
OUT
V2010
Copy the value in the lower
16 bits of the accumulator to
V2010
V2010
V2000
4 9 3 5
7 4 3 5
0 0 0 0 4 9 3 5
+
2 5 0 0
Acc.
7 4 3 5
(V2006)
(Accumulator)
The unused accumulator
bits are set to zero
SHFT
ANDST
L
3
D
STR
$
SHFT
0
A
3
D
3
D
OUT
GX
SHFT
AND
V
2
C
0
A
1
B
0
A
ENT
1
B
ENT
2
C
0
A
0
A
0
A
ENT
2
C
0
A
0
A
ENT
6
G
Add
(ADD)