Bin Subtraction - Delta MS300 Series User Manual

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API
21
D
Bit device
X Y
S1
S2
D
Notes on operand usage: none
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S1 S2
SUB
P
Word device
M K H KnX KnY KnM
＊ ＊ ＊ ＊
＊ ＊ ＊ ＊
＊
S1
 : Minuend.
 Using two data sources: The result of subtraction of
BIN method is stored in
 The highest bit of any data is symbolized as bit 0 indicating (positive) 1 indicating
(negative), enabling the use of algebraic subtraction operations.
 Flag changes connected with subtraction.
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.
 16-bit BIN subtraction: When X0=On, the content of D10 is subtracted from the
content of D0, and the difference is stored in D20.
X0
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Chapter 16 PLC Function ApplicationsMS300

BIN subtraction

D
16-bit command (7 STEP)
SUB
T C D
＊ ＊ ＊ ＊
＊ ＊ ＊ ＊
32-bit command (13 STEP)
＊ ＊ ＊ ＊
DSUB
Flag signal: M1020 Zero flag
S2 D
: Subtrahend.
D
.
D0 D10
SUB D20
16-55
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Continuous SUBP
execution type
Continuous
DSUBP
execution type
M1021 Borrow flag
M1022 Carry flag
Please refer to the following
supplementary explanation
: Difference.
S1
and
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Pulse
execution type
Pulse
execution type
S2
using the