Mitsubishi FX3G Series Programming Manual

323
FX3G/FX3U/FX3GC/FX3UC Series
Programming Manual - Basic & Applied Instruction Edition
12 Data Operation – FNC 40 to FNC 49
12.6 FNC 45 – MEAN / Mean
11
FNC30-FNC39 Rotation and Shift
12
FNC40-FNC49 Data Operation
13
FNC50-FNC59 High-Speed Processing
14
FMC60-FNC69 Handy Instruction
15
FNC70-FNC79 External FX I/O Device
16
FNC80-FNC89 External FX Device
17
FNC100-FNC109 Data Transfer 2
18
FNC110-FNC139 Floating Point
19
FNC140-FNC149 Data Operation 2
20
FNC150-FNC159 Positioning Control
12.6 FNC 45 – MEAN / Mean
Outline
This instruction obtains the mean value of data.
1. Instruction format
2. Set data
3. Applicable devices
S: This function is supported only in FX3U/FX3UC PLCs.
Explanation of function and operation
1. 16-bit operation (MEAN and MEANP)
The mean value of "n" 16-bit data from is stored to .
• The sum is obtained as algebraic sum, and divided by "n".
• The remainder is ignored.
2. 32-bit operation (DMEAN and DMEANP)
The mean value of "n" 32-bit data from [ +1, ] is stored to [ +1, ].
• The sum is obtained as algebraic sum, and divided by "n".
• The remainder is ignored.
Operand type Description Data type
Head word device number storing data to be averaged 16- or 32-bit binary
Word device number storing the mean value result 16- or 32-bit binary
n Number of data to be averaged (1 ≤ n ≤ 64) 16- or 32-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 VZModifyKH E ""P
33333333 S 3
3333333 S 33 3
n 33 33
DMEAN
DMEANP
Mnemonic Operation Condition
P
FNC 45
MEAN
D
16-bit Instruction
7 steps
MEAN
MEANP
Mnemonic Operation Condition
Continuous
Operation
Pulse (Single)
Operation
32-bit Instruction
13 steps
Continuous
Operation
Pulse (Single)
Operation
S 1 
S
D
S 1 
S
S 2 
D
D 1 S D 1 D
Command
input
FNC 45
MEAN
n
S  D 
n
S  S  S 
+ + 1 + ……… + + n − 1
D 
D 1 S D 1 S D 1 D D 1 D
[ + 1, ] + [ + 3, + 2] + ……… + [{ + n × 2 − 1}, { + n × 2 − 2}]
[ + 1, ]
Command
input
FNC 45
DMEAN
n
S  D 
n
S  S  S  S  S  S 
D  D 

Mitsubishi FX3G Series Specifications

General

Model	FX3G Series
Power Supply	AC 100-240V or DC 24V
Program Capacity	32, 000 steps
Execution Speed	0.21 µs/basic instruction
Communication Options	RS-422, USB, Ethernet
Expansion Modules	Analog, digital, communication
Programming Language	Ladder Logic, Instruction List
Built-in Functions	High-speed counters, pulse output
Analog I/O	Available via expansion modules