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Chapter 16 PLC Function Applications│CFP2000
API
ADD
20
D
Bit device
X
Y
M
S1
S2
D
Notes on operand usage: none
Using two data sources: The result of adding
method will be stored in
The highest bit of any data is symbolized as bit 0 indicating (positive) 1 indicating
(negative), enabling the use of algebraic addition operations. (for instance:
3+(-9)=-6)
Flag changes connected with the addition.
16-bit BIN addition: When X0=On, the result of the content of addend D0 plus the
content of augend D10 will exist in the content of D20.
Relationship between flag actions and negative/positive numbers:
S1
S2
D
P
Word device
K
H
KnX KnY KnM
＊
＊
＊
＊
＊
＊
＊
＊
＊
＊
＊
＊
S1
S2
: Augend.
: Addend.
1. When calculation results are 0, the zero flag M1020 will be On.
2. When calculation results are less than –32,768, the borrow flag M1021 will be
On.
3. When calculation results are greater than 32,767, the carry flag M1022 will be
On.
X0
ADD
BIN addition
16-bit command (7 STEP)
ADD
T
C
D
＊
＊
＊
＊
＊
＊
32-bit command (13 STEP)
＊
＊
＊
DADD
Flag signal: M1020 Zero flag
D
: Sum.
D
.
D0
D10
D20
16-66
Continuous
ADDP
execution type
execution type
Continuous
DADDP
execution type
execution type
M1021 Borrow flag
M1022 Carry flag
Please refer to the following
supplementary explanation
S1
S2
and
using the BIN
Pulse
Pulse
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