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FX3S/FX3G/FX3GC/FX3U/FX3UC Series
Programming Manual - Basic & Applied Instruction Edition
16 External FX Device – FNC 80 to FNC 89
16.7 FNC 86 - VRSC / Volume Scale
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
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 FX3G/FX3U/FX3UC 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
XYMTCSD
.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
S
D