User`s guide

3 Signals and Parameters

Parameter Tuning with the MATLAB Interface

You use the MATLAB functions to change block parameters. W ith these

functions, y ou do not ne ed to set the Simulink interface to external mode, and

you do not need to connect the Simulink interface with the target application.

You can download parameters to the target application while it is running

or be tween runs. This feature lets you change parameters in your target

application w ithout rebuilding the Simulink model.

After you download a target application to the target PC, you can change

block parameters using xPC Target functions. This procedure uses the

Simulink model

xpcosc.mdl as an example, and assumes y ou have created

and downloaded the target application for that model. It also assumes that

you have assigned

tg to the appropriate target PC.

1 In the MATLAB window, type

+tg

tg.start

start(tg)

The t arget PC displ ays the following message:

System: execution started (sample time: 0.001000)

2 Display a list of parameters. Type e ither

set(tg,'ShowParameters','on')

tg.ShowParameters='on'

The latter command displays a list of properties for the target object.

ShowParameters = on

3-70