Fnc 86 - Vrsc / Volume Scale - Mitsubishi Electric MELSEC FX3U Programming Manual

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
16.7

FNC 86 - VRSC / Volume Scale

Outline
This instruction reads the value of a variable analog potentiometer on the variable analog potentiometer
board (FX -8AV-BD) attached to the FX
3G
1. Instruction format
FNC 86
VRSC
VOLUME SCALE
2. Set data
Operand type
S S
1
D
3. Applicable devices
Bit Devices
Oper-
and System User
Type
X Y M T C S D .b KnX KnY KnM KnS T C D R U \G
S
S
1
S D
2
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 in the range 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
S S
1
Command
input
FNC 86
VRSC
490
Mnemonic
16-bit Instruction
P
5 steps VRSC
VRSCP
Volume number [setting range: 0 to 7]
Device to which the read analog value is transferred
Digit Specification
S D
PLC main unit as a numeric value in the range from 0 to 10.
3G
Operation Condition
Continuous
Operation
Pulse (Single)
Operation
Description
Word Devices
Special
System User
Unit
.
D
16 External FX Device – FNC 80 to FNC 89
16.7 FNC 86 - VRSC / Volume Scale
Mnemonic
32-bit Instruction
−
−
Con- Real
Index
stant Number
V Z Modify K H E
Operation Condition
Data type
16-bit binary
16-bit binary
Others
Charac-
Pointer
ter String
" " P