2-132.4 Analog Potentiometer2.4.1 Overview of Analog PotentiometerThe FPΣ is equipped with two analog potentiometers as a standard feature. Turning the potentiometerschanges 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 theprogramming tool, so this can be used, for example, with analog clocks, to change the set valueexternally by turning the potentiometer.Applicable special data registerSymbol Potentiometer No. Special data register Range of changeV0 Volume 0 DT90040V1 Volume 1 DT90041 K0 to K10002.4.2 Example Showing How to Use Analog PotentiometerThe FPΣ is provided with special data registers, in which the values in the registers change in responseto the analog potentiometers being moved. If the values of these registers are sent to the clock settingvalue area, a clock can be created that allows the time to be set using the potentiometer.Example: Writing of the clock setting valueThe value of the special data register (DT90040) that corresponds to the analog potentiometer V0 is sentto the setting value area (SV0) of TMX0 to set the time for the clock.
