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Mitsubishi Electronics FX3G User Manual

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FX
3S
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3G
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3GC
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3U
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3UC
 Series
Programming Manual - Basic & Applied Instruction Edition
12 Data Operation – FNC 40 to FNC 49
12.10 FNC 49 – FLT / Conversion to Floating Point
11
FN
C30
-FN
C3
9
R
ota
tion and 
Shi
ft
12
FN
C40-FN
C49
D
ata O
perati
on
13
FNC
50-FNC
59
High-Speed
 
Proc
essing
14
FM
C60-FN
C69
H
andy 
In
struction
15
FN
C70-FN
C79
E
xternal
 F
X
 I/O
 
De
vice
16
FNC
80-FNC
89
External
 FX 
Dev
ice
17
FNC1
00-
FNC10
9
Dat
a 
Transfer 2
18
FNC1
10-
FNC139
Fl
oati
ng Poi
nt
19
FNC14
0-F
N
C
149
Da
ta
 
Operation 2
20
FNC1
50-
FNC159
Pos
itioning 
Control
Program example
1. Arithmetic operations by binary floating point operations
The sequence program shown below is constructed as follows:
1) Calculation example
2) Sequence program
    (D0)        
÷       (X017 to X010)
  16-bit binary          2-digit BCD
                                                              
× K34.5
    
(D11, D10)  Binary floating point
operation
(D21, D20)
Binary floating
point operation
(1)
(2)
(D22)
BIN
(D25, D24)
Binary floating
point operation
(3)
(D29, D28)
Binary floating
point operation
(5)
(D27, D26)
Binary floating
point operation
(4)
(6)
 (D13, D12)
Scientific notation operation
for monitoring
 (D15, D14)
32-bit binary integer
(7)
(8)
M8000
FNC 49
FLT
D0
D20
FNC 19
BIN
K2X010
D22
FNC 49
FLT
D22
D24
FNC123
DEDIV
D20
D24
D28
FNC122
DEMUL
D28
D26
D10
FNC118
DEBCD
D10
D12
FNC129
DINT
D10
D14
(D0) 
→ (D21, D20)
 BIN        Binary floating point operation
(X017 to X010) 
→ (D22)
 BCD                      BIN
(D22) 
→ (D25, D24)
 BIN         Binary floating point operation
(D21, D20) 
÷ (D25, D24) → (D29, D28)
(D29, D28) 
× (D27, D26) → (D11, D10)
Binary floating point multiplication
(D11, D10)         
→ (D13, D12)
(D11, D10)         
→ (D15, D14)
(1)
(2)
(3)
(5)
(6)
(7)
(8)
FNC123
DEDIV
K345
K10
D26
(4)
K345 
÷ K 10 → (D27, D26)
                        Binary floating point operation
Binary floating point
division
Binary floating point
operation
Binary floating
point operation
Scientific notation operation
for monitoring
Binary floating
point operation
32-bit binary integer