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v10.0.1.x for R2026a
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IO205 - Digital Output

This example shows you how to use the IO205 to output digital signals and which settings you must first define.
The IO205 I/O module is a digital output module with Simulink® driver blocks. The 32 digital outputs are available as high-side switches with a 6 V to 48 V output range. All channels are galvanically isolated by optocouplers. All outputs are protected against short-circuit and thermal overload and can output up to 0.5 A per channel.
Table of Contents
Setup Prerequisites Pin Mapping/Connection Diagram/Test Setup Initialize and Open the Simulink model Model Description Build, Download, and Run the Example Check the Results Additional References

Setup

Prerequisites

You will require the following to run this example:
  • Speedgoat real-time target machine with one IO205 I/O module installed
  • Connector cable from the I/O module to the terminal board
  • 50-pin terminal board with jumper wires
  • External power supply (6 V to 48 V)
  • Oscilloscope to measure the signals

Pin Mapping/Connection Diagram/Test Setup

IO205_DigitalOutput_pinWiring.png
On the terminal board of the digital I/O module, connect pin 02 with the external power supply and pin 49 with the ground or 0 V of the power supply.
Connect pin 17 and pin 20 to the oscilloscope.
IO205 Pin Mapping

Initialize and Open the Simulink model

% Open Simulink model
modelName = 'sgMdl_IO205_DigitalOutput';
open_system(modelName);

Model Description

The Simulink model features one IO205 Setup block, one IO205 Write block and one Pulse Generator block.
The Pulse Generator block generates a square wave which then propagates to the IO205 Write block. Please note that the Pulse Generator has two different phase shifts configured as a vector. This parameter allows better visualization of the two signals.

Build, Download, and Run the Example

To run the example, either run the following code section or click the Run on Target button in the REAL-TIME tab in the Simulink model.
% Build the Simulink model
slbuild(modelName); % this will create the real-time application file (.mldatx)
 
% Create and connect to the Speedgoat real-time target machine
tg = slrealtime;
tg.connect;
 
% Download and install the real-time application on the target machine
tg.load(modelName);
 
% Connect the Simulink model with external mode to the real-time application on the target machine
set_param(modelName, 'SimulationMode', 'external') % put model into External Mode
set_param(modelName, 'SimulationCommand', 'connect') % connect with External Mode
% set_param(modelName,'SimulationCommand','start') % start real-time application through Simulink toolstrip
 
% Start the real-time application
tg.start;
 
% Wait a few seconds and then stop the real-time application on the target machine
pause(10)
tg.stop;
 

Check the Results

The blue signal is channel 1 and the red signal is channel 4 of the IO205 Write block.
IO205.png

Additional References