Virtual Input

Overview

A Virtual Input is a value you set from the datalogger over USB. The datalogger presents a set of sliders; each Virtual Input is one slider you can drag to set its value live. Use it to inject a value for testing and tuning — exercising logic that consumes an input without the real sensor connected.

Prerequisites

  • The datalogger connected over USB to move the slider.

Add it in the app

  1. Add a new input and choose Virtual Input as the type.
  2. Give it a clear alias (e.g. Test Setpoint).
  3. That's it — the value is driven from the datalogger slider.

Settings reference

This input has no type-specific settings — its value is set from the datalogger slider over USB. See Common settings below.

Common settings

Virtual Input also uses the shared setting — alias. See Common IO Settings.

Example — test setpoint

  1. Type Virtual Input, alias Test Setpoint.
  2. Reference Test Setpoint wherever you would normally use a measured input — for example as a term in a Compare Input or Math Input.
  3. In the datalogger, drag the Test Setpoint slider to different values to exercise the logic that consumes it.

Troubleshooting

  • Value never changes: the datalogger isn't connected over USB, or the slider hasn't been moved.
  • Other IO don't see it: check they reference the correct alias.