Mitsubishi MELSEC iQ-F FX5 series, Programming Manual, Page: 412 / 888

410
7 APPLICATION INSTRUCTION
7.7 Real Number Instruction
Adding single-precision real numbers
E+(P) [For 2 operands]
These instructions add the single-precision real number in the device specified by (s) to the single-precision real number in
the device specified by (d), and store the result in the device specified by (d).
Setting data
■
Descriptions, ranges, and data types
■
Applicable devices
Processing details
• These instructions add the single-precision real number in the device specified by (s) to the single-precision real number in
the device specified by (d), and store the result in the device specified by (d).
• Values in the devices specified (stored) by (s) and (d) should be 0 or 2
-126

|specified value (stored value)| <2
128
.
• When an input value is set from the engineering tool, a rounding error may occur.
• The table below shows the related devices.
Operation error
Ladder diagram Structured text
Not supported
Operand Description Range Data type Data type (label)
(s) Addend data or the head device number where the data that
is added to another is stored 0, 2
-126

|(s)|<2
128
Single-precision real number Single-precision real number
(d) Head device number where the data to which another is
added is stored

Single-precision real number Single-precision real number
Operand Bit Word Double word Indirect
specification Constant Others
X, Y, M, L,
SM, F, B, SB U

\G

T, ST,
C, LC T, ST, C, D,
W, SD, SW, R U

\G

Z LC LZ K, H E $
(s)
            
(d)
            
Device Name Description
Condition Operation
SM700 Carry The absolute value of the operation result

2
128
The value of (d) is the maximum value (2
128
) of 32-bit real
numbers and the carry flag SM700 turns on.
SM8020 Zero The operation result is true "0".
(The mantissa part is "0"). The zero flag SM8020 turns on.
SM8021 Borrow The absolute value of the operation result < 2
-126
The value of (d) is the minimum value (2
-126
) of 32-bit real
numbers and the borrow flag SM8021 turns on.
SM8022 Carry The absolute value of the operation result

2
128
The value of (d) is the maximum value (2
128
) of 32-bit real
numbers and the carry flag SM8022 turns on.
Error code
(SD0/SD8067) Description
3402 The specified device value is -0, denormalized number, NaN (not a number), or

.
The value stored in specified device is outside the following range
0, 2
-126

|Specified device value|<2
128
(s) (d)
+
(d) (d)+1 (s) (s)+1 (d) (d)+1
Single-precision real number Single-precision real number Single-precision real number