Floating Point Divide - Fdiv(79) - Omron C200H Operation Manual

BCD Calculations
Flags
5-17-13 FLOATING POINT DIVIDE – FDIV(79)
Limitations
Description
174
divided by the content of Dr and Dr+1 and the result is placed in R to R+3:
the quotient in R and R+1, the remainder in R+2 and R+3.
Remainder
R+3
Dr+1 Dr
ER: Dr and Dr+1 contain 0.
Dd, Dd+1, Dr, or Dr+1 is not BCD.
Indirectly addressed DM word is non-existent. (Content of *DM word
is not BCD, or the DM area boundary has been exceeded.)
EQ: ON when the result is 0.
Ladder Symbols
FDIV(79) @FDIV(79)
Dd
Dr
R
Dr and Dr+1 cannot contain zero. Dr and Dr+1 must be in the same data
area, as must Dd and Dd+1; R and R+1.
When the execution condition is OFF, FDIV(79) is not executed. When the
execution condition is ON, FDIV(79) divides the floating-point value in Dd and
Dd+1 by that in Dr and Dr+1 and places the result in R and R+1.
Dr+1 Dr
To represent the floating point values, the rightmost seven digits are used for
the mantissa and the leftmost digit is used for the exponent, as shown below.
Quotient
R+2 R+1
Dd+1
Dd
Dr
R
Quotient
R+1
Dd+1
Section 5-17
R
Dd
Operand Data Areas
Dd: First dividend word (BCD)
IR, SR, AR, DM, HR, TC, LR
Dr: First divisor word (BCD)
IR, SR, AR, DM, HR, TC, LR
R: First result word
IR, AR, DM, HR LR
R
Dd