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6F3B0250
Basic Hardware and Function
165
7. Instructions
FUN 031 D+ Double-word addition
Expression
Input
-
[
A+1
×
A
D+
B+1
×
B
®
C+1
×
C
]
-
Output
Function
When the input is ON, the double-word data of
A+1
×
A
and
B+1
×
B
are added, and the result is stored in
C+1
×
C
. The data range is -2147483648 to 2147483647.
If the result is greater than 2147483647, the upper limit value 2147483647 is stored in
C+1
×
C
, and the
output is turned ON. If the result is smaller than -2147483648, the lower limit value
-2147483648 is stored in
C+1
×
C
, and the output is turned ON.
Execution condition
Input Operation Output
OFF No execution OFF
ON Execution (normal) OFF
Execution (overflow or underflow occurred) ON
Operand
Name Device Re
g
ister Constant Index
X Y R S T. C. XW YW RW SW T C D I J K
A
Au
g
end
ÖÖÖÖÖÖÖ Ö
B
Addend
ÖÖÖÖÖÖÖ Ö
C
Sum
ÖÖÖÖÖÖ
Example
When R005 is ON, the data of D0011
×
D0010 and the constant data 100000 is added, and the
result is stored in D0101
×
D0100.
If the data of D0011
×
D0010 is 300000, the result 400000 is stored in D0101
×
D0100, and R010 is
turned OFF. (No overflow/underflow)
D0011
×
D0010 300000
+
D0101
×
D0100 400000 R010 is OFF
Constant 100000
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