NAiS FP Series, Руководство пользователя

Страница: 234 / 326

FP
Σ
11.1 Analog Potentiometer
11 - 3
11.1 Analog Potentiometer
This section explains about the analog potentiometer.
11.1.1 Overview of Analog Potentiometer
The FP
Σ
is equipped with two analog potentiometers as a standard feature. Turning the
potentiometers changes the values of the special data registers DT90040 and
DT90041 within a range of K0 to K1000.
Using this function makes it possible to change the internal set values in the PLC without
using the programming tool, so this can be used, for example, with analog clocks, to
change the set value externally by turning the potentiometer.
Analog potentiometer
V0 (potentiometer 0) Changes the value of DT90040 within a range of K0 to K1000. .
V1 (potentiometer 1) Changes the value of DT90041 within a range of K0 to K1000. .
Figure 223: FP
Σ
Analog potentiometer
Applicable special data register
Symbol Potentiometer No. Special data register Range of change
V0 Volume 0 DT90040
K0 to K1000
V1 Volume 1 DT90041
K0 to K1000
11.1.2 Example Showing How the Analog Potentiometers are Used
The FP
Σ
is provided with special data registers, in which the values in the registers
change in response to the analog potentiometers being moved. If the values of these
registers are sent to the clock setting value area, a clock can be created that allows the
time to be set using the potentiometer.
Writing example of the clock setting value
The value of the special data register (DT90040) that corresponds to the analog
potentiometer V0 is sent to the setting value area (SV0) of TMX0 to set the time for the
clock.
TMX 0, K 999 R0
R9010
F0 MV
DT 90040 , SV 0
Data transmission instruction
The value of special data register DT90040 is
sent to the setting value area.
0.1-second type timer
K999 is set as a dummy value.
Figure 224: Program example of analog potentiometer