Справочник Пользователя для Mitsubishi Electronics Mitsubishi Digital Electronics Video Gaming Accessories FX3G
505
FX
3G
/FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
18 Floating Point – FNC110 to FNC139
18.10 FNC122 – EMUL / Floating Point Multiplication
11
FN
C
C
30
-FN
C
C
39
R
otati
on and
on and
Shi
ft
ft
12
FNC4
0-F
0-F
NC4
9
D
ata O
per
ati
per
ati
on
13
FN
C
C
50-FN
C
59
H
igh S
pe
ed
P
rocessing
14
FM
C
C
60-FN
C
69
H
andy
In
st
ru
ct
ion
15
FNC7
0-F
0-F
NC7
9
Ex
ter
nal FX
I/O
D
evice
16
FN
C
C
80-FN
C
89
Ext
ernal
FX
ernal
FX
De
vic
vic
e
17
FN
C
100-
FN
FN
C
10
9
Da
ta
Transf
er 2
er 2
18
FN
C
110-
FN
FN
C
139
Floati
ng Poi
nt
19
FN
C
14
0-F
N
C
149
Da
ta
O
per
at
at
ion 2
20
FN
C
150-
FN
FN
C
159
Posit
ioning
C
ont
ro
ro
l
18.10 FNC122 – EMUL / Floating Point Multiplication
Outline
This instruction executes multiplication of two binary floating point data.
→ For program examples of floating point operations, refer to Section 12.10.
→ For handling of floating point, refer to Subsection 5.1.3.
1. Instruction format
2. Set data
*1.
When a constant (K or H) is specified, it is automatically converted into binary floating point (real number)
when the instruction is executed.
when the instruction is executed.
3. Applicable devices
S: This function is supported only in FX
3U
/FX
3UC
PLCs.
Explanation of function and operation
1. 32-bit operation (DEMUL and DEMULP)
Binary floating point data [
+1,
] is multiplied by binary floating point data [
+1,
], and the
multiplication result in the binary floating point format is transferred to [
+1,
].
When a constant (K or H) is specified as [
+1,
] or [
+1,
], it is automatically converted into
binary floating point.
Operand Type
Description
Data Type
Word device number storing binary floating point data used in multiplication
Real number (binary)
*1
Word device number storing binary floating point data used in multiplication
Data register number storing the multiplication result
Oper-
and
Type
Bit Devices
Word Devices
Others
System User
Digit Specification
System User
Special
Unit
Index
Con-
stant
stant
Real
Number
Charac-
ter String
Pointer
X Y M T C S D
.b KnX KnY KnM KnS T C D R U
\G
V Z Modify K H
E
"
"
P
3 3
S
3
3 3
3
3 3
S
3
3 3
3
3 3
S
3
P
FNC 122
EMUL
D
−
Mnemonic
Operation Condition
16-bit Instruction
DEMUL
DEMULP
Mnemonic
Operation Condition
32-bit Instruction
13 steps
Continuous
Operation
Pulse (Single)
Pulse (Single)
Operation
S
1
S
2
D
S
1
S
2
D
S
1
S
1
S
2
S
2
D
D
Command
input
FNC122
DEMUL
S
1
S
2
D
[ +1, ]
× [ +1, ] → [ +1, ]
Binary floating point
Binary floating point
Binary floating point
S
1
S
1
S
2
S
2
D
D
S
1
S
1
S
2
S
2
FNC122
DEMUL
S
1
S
2
D
[ +1, ]
× [ K100 ] → [ +1, ]
Binary floating point
Automatically
converted into binary
floating point
Binary floating point
S
1
S
1
D
D
Command
input