AutomationDirect DL205 - Page 326

DL205 User Manual, 4th Edition, Rev. D
5-102
Chapter 5: Standard RLL Instructions
1
2
3
4
5
6
7
8
9
10
11
12
13
14
A
B
C
D
Add Binary Double (ADDBD)
Add Binary Double is a 32-bit instruction that adds the binary
value in the accumulator with the value (Aaaa), which is either
two consecutive V-memory locations or an 8-digit (max.) binary
constant. The result resides in the accumulator.
NOTE: Status flags are valid only until another instruction uses the same flag.
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 binary value in the accumulator is added
with the binary value in V1420 and V1421 using the Add Binary Double instruction. The
value in the accumulator is copied to V1500 and V1501 using the Out Double instruction.




230
240
250-1
260
ADDBD
A aaa
LDD
V1400
X1
ADDBD
V1420
Thebinar yval ue in the
accumulatoris added withthe
valueinV1420 and V1421
OUTD
V1500
Copy thevalue in the
accumulatortoV1500
and V1501
111000
010000
A
A
(Accumulator)
+1
0
0 0
C
00A01
V1500
0
(V1421 and V1420)
C
V1400
A11
V1401
V1501
1000
000 C 010
Acc.
Load the value in V1400
and V1401 into the
accumulator
LD D
BIN
K2561
Use either OR Constant
V-memory
DirectSOFT
STR
LD
OUT
ADD
SHFT D SHFT
SHFT D SHFT
SHFT D SHFT
B
Handheld Programmer Keystrokes
1
1
1
400
214 0
500
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
SP73 On when a signed addition or subtraction results in an incorrect sign bit
Operand Data Type DL260 Range
A aaa
V-memory V All (See page 3-56)
Pointer P All V mem (See page 3-56)
Constant. K 0-FFFFFFFF
DS Used
HPP Used