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 Open TX – Data Flow

This diagram shows where data is created and how the Model screens use it.

 

 

To download this diagram, left click on it to display the pdf, then save it to a file.

Overview

The left hand section of the diagram shows how data comes into the transmitter from external sources and internal utilities.

These external sources are sticks, pots., sliders, switches, trainer channels and the telemetry data. The internal utilities are the transmitter battery voltage, the transmitter clock, timer 1 and timer 2.

Each item of data is represented by a rectangle with a name above it. The value of the data item conceptually is in the rectangle and can vary as things change.

This diagram shows how data is organised for one model. All of 60 models are organised in the same way even though only one model is ever active at one time.

Data Types

This data type contains parameters that you can directly change by setting them to your selected value. Once selected, they remain in permanent memory until you change them again. This data is retained even when the radio is turned off.

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This data type is continually calculated from sources and parameters. It changes as the sources change.

New Model Automatic Data Setup

When a new model is created using the new model wizard (see Model Selection), simple data paths for throttle, ailerons, elevator and rudder are created automatically.

For example, when a four channel plane is created using the model wizard...

  1. The first four channels of the Inputs screen are given the names IThr, IAil, IEle and IRud. The order is chosen in the Radio Setup screen by the ‘Default Channel Order’ parameter. In this example, the order is TAER. I.e. throttle, aileron, elevator and rudder.
  2. The values of the sticks Thr, Ail, Ele and Rud are entered as the sources in the Inputs screen,
  3. The trim values of the sticks TrmT, TrmA, TrmE and TrmR are entered as the trim sources in the Inputs screen also,
  4. The output values of the Inputs (in this example IThr, IAil, IEle and IRud) are entered as the sources in the Mixer screen,
  5. The output values of the Mixer CH1, CH2, CH3 and CH4 are by default the sources in the Servo screen.

 

It is important to understand that the values on the left of each Inputs line is the result of the calculations done in the line(s) for that Inputs channel

Also, the value on the left of each Mixer line is the result of the calculations done in the line(s) for that Mixer channel.

And, the value on the left of each Servo line is the result of the calculations done in the line for that Servo channel.

 

Keep this data flow in mind when setting up other channels manually.

 

Phantom Divide

 

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