Mitsubishi Electronics FX3G Manual De Usuario

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FX
3S
/FX
3G
/FX
3GC
/FX
3U
/FX
3UC
 Series
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
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
16.7
FNC 86 - VRSC / Volume Scale
Outline
This instruction reads the value of a variable analog potentiometer on the variable analog potentiometer board 
attached to the PLC main unit as a numeric value ranging from 0 to 10.
1. Instruction format
2. Set data
3. Applicable devices
S
: This function is supported only in FX
3G
/FX
3U
/FX
3UC
 PLCs.
Explanation of function and operation
This instruction reads the value of a variable analog potentiometer on the variable analog potentiometer board
attached to the main unit as a numeric value ranging from 0 to 10.
However, the actual scale value does not always correspond to the switching position of the variable analog
potentiometer scale (0 to 10).
This instruction converts into a binary value the scale value of a variable analog potentiometer specified in
, and
transfers the converted binary value to
.
Operand type
Description
Data type
Volume number [setting range: 0 to 7]
16-bit binary
Device to which the read analog value is transferred
16-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
X Y M T C S D .b KnX KnY KnM KnS T C D R U \G
V Z Modify K H
E
" "
P
S
S

Mnemonic
Operation Condition
16-bit Instruction
5 steps VRSC
VRSCP
Mnemonic
Operation Condition
Continuous
Operation
Pulse (Single)
Operation
32-bit Instruction
P
FNC 86
VRSC
VOLUME SCALE
S
1
 ‚
  S
  D
S
1
 ‚
  S
S
2
 ‚
  D
S
1
 ‚
  S
  D
FNC 86
VRSC
Command
input