Mitsubishi Electronics Mitsubishi Digital Electronics Video Gaming Accessories FX3G ユーザーズマニュアル
273
FX
3G
/FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
10 Arithmetic and Logical Operation (
+, −, ×, ÷) – FNC 20 to FNC 29
10.3 FNC 22 – MUL / Multiplication
1
In
trodu
ct
ct
ion
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O
ver
vi
ew
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In
st
ru
ct
ion
Li
st
4
D
evices
in D
etail
etail
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Specifi
ed t
he
he
D
evice &
C
onst
ant
ant
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Bef
ore
ore
Pr
ogr
am
am
m
ing
7
B
asic
In
st
ru
ct
ion
8
FNC0
0-F
0-F
NC0
9
Pr
ogr
am
Flow
am
Flow
9
FN
C
C
10-FN
C
19
Mo
ve
ve
&
Co
mp
are
are
10
FNC2
0-F
0-F
NC2
9
Ar
ith.
&
&
Logic
O
per
ati
ati
on
10.3
FNC 22 – MUL / Multiplication
Outline
This instruction executes multiplication by two values to obtain the result (A x B = C).
→ For the floating point multiplication instruction EMUL (FNC122), refer to Section 18.10.
1. Instruction format
2. Set data
3. Applicable devices
S
1
: This function is supported only in FX
3U
/FX
3UC
PLCs.
S
2
: Available only in 16-bit operations (Not available in 32-bit operations)
Explanation of function and operation
1. 16-bit operation (MUL and MULP)
The contents of
are multiplied by
in the binary format, and the multiplication result is transferred to 32-bit
[
+1,
] .
• The most significant bit of each data indicates the sign (positive: 0 or negative: 1), and data are multiplied
algebraically.
5
5
× (−8) = −40
• When a constant (K) is specified in
or
, it is automatically converted into the binary format.
Operand type
Description
Data type
Data for multiplication or word device number storing data
16- or 32-bit binary
Data for multiplication or word device number storing data
16- or 32-bit binary
Head word device number storing the multiplication result
32- or 64-bit binary
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
3
3
3 3 3 3
S1
3
3
3 3
3
3
3
3
3 3 3 3
S1
3
3
3 3
3
3
3
3 3 3 3
S1
S
2
3
DMUL
DMULP
Mnemonic
Operation Condition
P
FNC 22
MUL
D
16-bit Instruction
7 steps MUL
MULP
Mnemonic
Operation Condition
Continuous
Operation
Pulse (Single)
Pulse (Single)
Operation
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
2
D
D
1
Command
input
FNC 22
MUL
BIN BIN BIN
( )
( )
× ( ) → ( +1, )
16 bits 16 bits 32 bits
D
S1
S2
D
S1
S2
D
S
1
S
2