Tuesday, 23 March 2010 04:12

Potentiometer Soft-Device

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Potentiometer Soft-Device

Overview

The Potentiometer Soft-Device provides one continuously variable "analog" input value through a three wire interface.  You can use the potentiometer Soft-Device to connect a wide variety of devices, not simply a traditional rotary "pot".  For example, joy sticks, linear potentiometers and various Hall effect devices behave like potentiometers, and you can hook them up to Soft-I/O just like a potentiometer.  Compared to wiring a potentiometer to a PLC or conventional I/O system where you need to wire the power conductor to the positive side of the power supply and the ground conductor to the negative side of the power supply, with Soft-I/O, you simply hook up three wires to any three pins of the module.  Soft-I/O supplies the power, ground and accepts the signal, whether it is 24VDC or 5VDC.  What could be simpler?

Features

  • Three wire interface
  • Soft-I/O supplies power to potentiometer
  • Supply power choice of 5V or 24V
  • You select the units of the input
  • Configurable input filter to assure the right balance between responsiveness and stability
  • Flexible pin assignments
  • Non-volatile saving of settings
  • Flexible tags for remote control

In Action

The potentiometer Soft-Device can be used for a variety of three-wire analog devices in addition to potentiometers.  Closely related to potentiometers are joy sticks, which are used as operator input devices to guide moving systems.  There are myriad other three-wire analog devices such as temperature sensors for which the potentiometer Soft-Device is an ideal input device. 

Technical Specifications

Each configured Potentiometer Soft-Device provides one continuously variable analog input.  You can provide a scaling factor and provide units so that your Soft-Device reports in engineering units.  The module supplies power, and that simplifies wiring.  Non-volatile, user-configurable parameters include: Soft-I/O module supplied 24 V or 5 V power selection; 3-wire sensor support; configurable filtering; and Soft-I/O pin assignments.  Typical sensors used with this Soft-Device include rotary or linear potentiometers, joy sticks and other analog sensors.

Last modified on Saturday, 26 June 2010 20:49
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Published in Analog Input Soft-Devices
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