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FX
3G
/FX
3U
/FX
3UC
 Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
16 External FX Device – FNC 80 to FNC 89
11
FN
C
30
-FN
C
39
R
otati
on and 
Shi
ft
12
FNC4
0-F
NC4
9
D
ata O
per
ati
on
13
FN
C
50-FN
C
59
H
igh S
pe
ed 
P
rocessing
14
FM
C
60-FN
C
69
H
andy 
In
st
ru
ct
ion
15
FNC7
0-F
NC7
9
Ex
ter
nal FX
 I/O
 
D
evice
16
FN
C
80-FN
C
89
Ext
ernal
 FX 
De
vic
e
17
FN
C
100-
FN
C
10
9
Da
ta
 
Transf
er 2
18
FN
C
110-
FN
C
139
Floati
ng Poi
nt
19
FN
C
14
0-F
N
C
149
Da
ta
 
O
per
at
ion 2
20
FN
C
150-
FN
C
159
Posit
ioning 
C
ont
ro
l
16. External FX Device – FNC 80 to FNC 89
FNC 80 to FNC 89 provide control instructions for special adapters mainly connected to serial ports.
PID control loop instruction is included in this group.
FNC No.
Mnemonic
Symbol
Function
Reference
80
RS
Serial Communication
Section 16.1
81
PRUN
Parallel Run (Octal Mode)
Section 16.2
82
ASCI
Hexadecimal to ASCII Conversion
Section 16.3
83
HEX
ASCII to Hexadecimal Conversion
Section 16.4
84
CCD
Check Code
Section 16.5
85
VRRD
Volume Read
Section 16.6
86
VRSC
Volume Scale
Section 16.7
87
RS2
Serial Communication 2
Section 16.8
88
PID
PID Control Loop
Section 16.9
89
n
RS
D
m
S
D
S
PRUN
ASCI
D n
S
HEX
D n
S
CCD
D n
S
D
S
VRRD
D
S
VRSC
n1
RS2
n
D
m
S
D
PID
S3
S2
S1