Mitsubishi MELSEC iQ-F FX5 series User Manual

412
7 APPLICATION INSTRUCTION
7.7 Real Number Instruction
Subtracting single-precision real numbers
E-(P) [For 2 operands]
These instructions subtract the single-precision real number in the device specified by (s) from 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 subtract the single-precision real number in the device specified by (s) from 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 be 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) Subtrahend data or the head device number where the data
to be subtracted from another is stored
0, 2
-126
|(s)|<2
128
Single-precision real number Single-precision real number
(d) Head device number where the data from which another is
to be subtracted 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

Mitsubishi MELSEC iQ-F FX5 series Specifications

General

Brand	Mitsubishi
Model	MELSEC iQ-F FX5 series
Category	Controller
Language	English