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6F3B0250
Basic Hardware and Function
171
7. Instructions
FUN 041 DIV Unsigned double/single division
Expression
Input
-
[
A+1
×
A
DIV
B
®
C
]
-
Output
Function
When the input is ON, the double-word data of
A+1
×
A
is divided by the data of
B
, and the quotient is
stored in
C
and the remainder in
C+1.
The data range of
A+1
×
A
is 0 to 4294967295, and the data range
of
B
and
C
is 0 to 65535.
If the quotient is greater than 65535 (overflow), the limit value 65535 is stored in
C
, 0 is stored in
C+1
,
and the instruction error flag (ERF = S051) is set to ON.
Execution condition
Input Operation Output ERF
OFF No execution OFF
-
ON
Normal execution (
B
¹
0)
ON
-
Overflow (
B
¹
0)
ON Set
No execution (
B
=
0)
OFF Set
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
Dividend
ÖÖÖÖÖÖÖ Ö
B
Divisor
ÖÖÖÖÖÖÖ Ö
C
Quotient
ÖÖÖÖÖÖ
Example
When R010 is ON, the double-word data of D0201
×
D0200 is divided by the constant data 4000,
and the quotient is stored in D1000 and the remainder is stored in D1001.
If the data of D0201
×
D0200 is 332257, the quotient 83 is stored in D1000 and the remainder 257
is stored in D1001.
D0201
×
D0200 332257
¸
D1000 83 (quotient)
Constant 4000 D1001 257 (remainder)
Note
·
If divisor (operand
B
) is 0, ERF (instruction error flag = S051) is set to ON.
The ERF (S051) can be reset to OFF by user program, e.g.
-
[ RST S051 ]
-
.
·
This instruction handles the register data as unsigned integer.
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