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FX3S/FX3G/FX3GC/FX3U/FX3UC Series
Programming Manual - Basic & Applied Instruction Edition
10 Arithmetic and Logical Operation (+, −, ×, ÷) – FNC 20 to FNC 29
10.3 FNC 22 – MUL / Multiplication
1
Introduction
2
Overview
3
Instruction
List
4
Devices
in Detail
5
Specified the
Device &
Constant
6
Before
Programming
7
Basic
Instruction
8
FNC00-FNC09
Program Flow
9
FNC10-FNC19
Move & Compare
10
FNC20-FNC29
Arith. & Logic
Operation
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
S1: This function is supported only in FX3G/FX3GC/FX3U/FX3UC PLCs.
S
2: This function is supported only in FX3U/FX3UC PLCs.
S
3: 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 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 is multiplied
algebraically.
5 × (−8) = −40
• When a constant (K) is specified in or , it is automatically converted into 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
Real
Number
Charac-
ter String
Pointer
XYMTCSD.b KnX KnY KnM KnS T C D R U\G V Z Modify K H E ""P
S1 S2
S1 S2
S1 S2 S3
DMUL
DMULP
Mnemonic Operation Condition
P
FNC 22
MUL
D
16-bit Instruction
7 steps
MUL
MULP
Mnemonic Operation Condition
Continuous
Operation
Pulse (Single)
Operation
32-bit Instruction
13 steps
Continuous
Operation
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