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11 Use of Built-in Analog
99
FX3S Series Programmable Controllers
User's Manual - Hardware Edition
11
Built-in Analog
12
Output Wiring
13
Wiring for
Various Uses
14
Test Run,
Maintenance,
Troubleshooting
15
Other Extension
Units and
Options
16
Display Module
(FX
3S
-5DM)
17
Memory
Cassette
A
Special Devices
(M8000-, D8000-)
B
Instruction List
C
Discontinued
models
11.1 Outline
11.1 Outline
This section explains handling of the built-in variable analog potentiometer and built-in analog input.
For the built-in variable analog potentiometer function, refer to Section 11.2.
For the built-in analog input function, refer to Section 11.3.
11.2 Built-in variable analog potentiometer function
11.2.1 Outline of functions
The main unit has two built-in variable analog potentiometers function (shown in the figure below).
The value increases from 0 to 255 when the variable analog potentiometer is turned clockwise, and will be
automatically written to a special data register of the PLC.
11.2.2 Applicable PLC
The following models have built-in variable analog potentiometers.
11.2.3 Special data register
The current value of each variable analog potentiometer is stored in special data registers shown below.
Applicable PLC
FX3S-10MR/ES FX3S-10MT/ES FX3S-10MT/ESS FX3S-10MR/DS FX3S-10MT/DS FX3S-10MT/DSS
FX3S-14MR/ES FX3S-14MT/ES FX3S-14MT/ESS FX3S-14MR/DS FX3S-14MT/DS FX3S-14MT/DSS
FX
3S-20MR/ES FX3S-20MT/ES FX3S-20MT/ESS FX3S-20MR/DS FX3S-20MT/DS FX3S-20MT/DSS
FX3S-30MR/ES FX3S-30MT/ES FX3S-30MT/ESS FX3S-30MR/DS FX3S-30MT/DS FX3S-30MT/DSS
Variable analog potentiometer Data register to store current value
VR1 (Upper side): Variable analog potentiometer 1 D8030 (Integer from 0 to 255)
VR2 (Lower side): Variable analog potentiometer 2 D8031 (Integer from 0 to 255)
Variable analog potentiometer
enlarged view
VR2
VR1