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488
8 APPLICATION INSTRUCTION
8.9 Real Number Instruction
E-(P) [For 3 operands]
These instructions subtract the single-precision real number in the device specified by (s2) from the single-precision real
number in the device specified by (s1), 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 (s2) from the single-precision real
number in the device specified by (s1), and store the result in the device specified by (d).
• Values in the devices specified (stored) by (s1), (s2), and (d) should be 0 or 2
-126
|specified value (stored value)|
2
128
.
• The table below shows the related devices.
Ladder diagram
Structured text
ENO:=EMINUS(EN, s1, s2, d);
ENO:=EMINUSP(EN, s1, s2, d);
FBD/LD
("EMINUS", "EMINUSP" enters
.)
Operand Description
Range
Data type
Data type (label)
(s1)
Minuend data or head device number where the data from
which another is to be subtracted is stored
0, 2
-126
|(s1)|<2
128
Single-precision real number
ANYREAL_32
(s2)
Subtrahend data or head device number where the data to
be subtracted from another is stored
0, 2
-126
|(s2)|<2
128
Single-precision real number
ANYREAL_32
(d)
Head device number for storing the operation result
Single-precision real number
ANYREAL_32
EN
Execution condition
Bit
BOOL
ENO
Execution result
Bit
BOOL
Operand
Bit
Word
Double word Indirect
specification
Constant
Others
X, Y, M, L, SM,
F, B, SB, S
T, ST, C, D, W,
SD, SW, R
U
\G
Z
LC
LZ
K, H
E
$
(s1)
(s2)
(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.
(s1) (s2)
(d)
EN
ENO
d
s1
s2
-
(s1)
(s1)+1
(s2)
(s2)+1
(d)
(d)+1
Single-precision real number
Single-precision real number Single-precision real number
Summary of Contents for MELSEC iQ-F FX5
Page 1: ...MELSEC iQ F FX5 Programming Manual Instructions Standard Functions Function Blocks ...
Page 2: ......
Page 17: ...15 CONTENTS ...
Page 24: ...22 MEMO ...
Page 1050: ...1048 26 TIME DATA FUNCTIONS 26 4 Division MEMO ...
Page 1068: ...1066 29 COUNTER FUNCTION BLOCKS 29 4 Counter Function Block Operation error There is no error ...
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