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473
FX
3G
/FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
16 External FX Device – FNC 80 to FNC 89
16.7 FNC 86 - VRSC / Volume Scale
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
oa
ting Poi
nt
19
FNC14
0-F
N
C
149
Da
ta
Operation 2
20
FNC1
50-
FNC159
Pos
itioning
Control
Program example
1. Example in which the scale value is used as a rotary switch
One of the auxiliary relays from M0 to M10 turns ON in accordance with the scale value ranging from 0 to 10 of the
specified variable analog potentiometer.
Cautions
• In 14-point and 24-point type FX
3G
PLCs, the variable analog potentiometer board can be connected to the option
connector 1, and occupies communication channel ch1.
In this case, the communication function using communication channel ch1 is not available when the VRRD or
VRSC instruction is used.
• In 40-point and 60-point type FX
3G
PLCs, the variable analog potentiometer board can be connected only to the
option connector 2, and occupies communication channel ch2.
In this case, the communication function using communication channel ch2 is not available when the VRRD or
VRSC instruction is used.
• The communication function is not available for ch1 when the VRRD or VRSC instruction is used in the program in
FX
3U
/FX
3UC
PLCs.
→
For details, refer to the Communication Control Edition manual.
• FX
3G
PLCs support the FX
3G
-8AV-BD.
• FX
3U
/FX
3UC
-32MT-LT(-2) PLCs support the FX
3U
-8AV-BD.
K1
X000
FNC 86
VRSC
FNC 41
DECO
D1
M0
K4
X001
M0
M1
M10
D1
M0 turns ON when the scale value is "0".
M0 turns ON when the scale value is "1".
M0 turns ON when the scale value is "10".
The FNC41 (DECO)
instruction occupies auxiliary
relays M0 to M15.