Dividing Double-Precision Real Numbers - Mitsubishi Electric MELSEC iQ-R Series Programming Manual

Dividing double-precision real numbers

ED/
This instruction performs division between double-precision real numbers.
ST
ENO:=EDDIVISION(EN,s1,s2,d);
■Execution condition
Instruction
ED/
Setting data
■Description, range, data type
Operand Description
(s1) Dividend data or the start device where dividend data is stored
(s2) Divisor data or the start device where divisor data is stored
(d) Start device for storing the operation result
EN Execution condition
ENO Execution result
■Applicable devices/labels
Operand Bit
SB
(s1)

(s2)

(d)

Processing details
• This instruction divides the double-precision real number in the device specified by (s1) by the double-precision real
number in the device specified by (s2), and store the division result in the device specified by (d).
(s1)+3 (s1)+2 (s1)+1 (s1)
Double-precision real number
-1022
• Value 0 or 2 ≤|specified value (stored value)| <2
and (d).
• If the operation result is -0 or an underflow occurs, the operation result turns out to 0.
• When an input value is set using the engineering tool, a rounding error may occur. Refer to the following for the precautions
on setting input values using the engineering tool.
Page 26 Precautions
Operation error
Error code Description
3400H The data (divisor) in the device specified by (s2) is 0.
3402H The value input to (s1) is -0, a subnormal number, NaN (not a number), or ±∞.
The value input to (s2) is -0, a subnormal number, NaN (not a number), or ±∞.
3403H The data output from (d) exceeds the following range. (An overflow has occurred.)
|(d)|<2
10 REAL VALUE PEOCESSING
112
10.1 Floating-point instruction
Execution condition
RX, RY, LB



(s2)+3 (s2)+2 (s2)+1
÷
Double-precision real number
1024
Range
0, 2
0, 2



Word
SW



(s2) (d)+3 (d)+2
Double-precision real number
1024
can be specified or stored in the devices specified by (s1), (s2),
Data type
-1022 1024
ANYREAL_64
≤|(s1)|<2
-1022 1024
ANYREAL_64
≤|(s2)|<2
ANYREAL_64
BOOL
BOOL
Constant
G, RWw, RWr, LW K, H
 
 
 
(d)+1 (d)