6F3B0253
Basic Hardware and Function 153
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 ≠ 0)
ON
−
Overflow (B ≠ 0)
ON Set
No execution (B = 0)
OFF Set
Operand
Name Device Register Constant Index
X Y R S T. C. XWYWRWSW T C D I J K
A Dividend
√√√√√√√ √
B Divisor
√√√√√√√ √
C Quotient
√√√√√√
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.
