Multiplying Single-Precision Real Numbers - Mitsubishi MELSEC iQ-F FX5 series Programming Manual

Multiplying single-precision real numbers

E*(P)
These instructions multiply the single-precision real number in the device specified by (s2) to the single-precision real number
in the device specified by (s1), and store the result in the device specified by (d).
Ladder diagram
(s1)
Setting data
■Descriptions, ranges, and data types
Operand Description
(s1) Multiplicand data or head device number where the data to
be multiplied by another is stored
(s2) Multiplier data or head device number where the data by
which another is to be multiplied is stored
(d) Head device number for storing the operation result
■Applicable devices
Operand Bit
X, Y, M, L,
SM, F, B, SB

(s1)

(s2)

(d)
Processing details
• These instructions multiply the single-precision real number in the device specified by (s2) to the single-precision real
number in the device specified by (s1), and store the result in the device specified by (d).
(s1)+1 (s1)
Single-precision real number Single-precision real number Single-precision real number
• Values in the devices specified (stored) by (s1), (s2), and (d) should be 0 or 2
• When an input value is set from the engineering tool, a rounding error may occur.
• The table below shows the related devices.
Device Name
SM700 Carry
SM8020 Zero
SM8021 Borrow
SM8022 Carry
7 APPLICATION INSTRUCTION
418
7.7 Real Number Instruction
(s2) (d)
Word
U\G T, ST, T, ST, C, D,
C, LC W, SD, SW, R
  
  
  
(s2)+1 (s2)

Description
Condition
The absolute value of the operation result
The operation result is true "0".
(The mantissa part is "0").
The absolute value of the operation result < 2
The absolute value of the operation result
Structured text
Not supported
Range Data type
-126 128
|(s1)|<2
0, 2 Single-precision real number
-126 |(s2)|<2 128
0, 2 Single-precision real number

Single-precision real number
Double word Indirect
U\G Z LC LZ
   
   
   
(d)+1 (d)
Operation

128
2 The value of (d) is the maximum value (2
numbers and the carry flag SM700 turns on.
The zero flag SM8020 turns on.
-126
The value of (d) is the minimum value (2
numbers and the borrow flag SM8021 turns on.

128
2 The value of (d) is the maximum value (2
numbers and the carry flag SM8022 turns on.
Data type (label)
Single-precision real number
Single-precision real number
Single-precision real number
Constant
specification
K, H
 
 
 
-126
|specified value (stored value)|
128
-126
128
Others
E $
  
  
  

128
2 .
) of 32-bit real
) of 32-bit real
) of 32-bit real