Toshiba 6F3B0253 - Manual (Page 149)

6F3B0253
Basic Hardware and Function
147
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 Register Constant Index
X Y R S T. C. XW YW RW SW T C D I J K
A Augend √ √ √ √ √ √ √ √
B Addend √ √ √ √ √ √ √ √
C Sum
√ √ √ √ √ √
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