Non-Interactive Mode

When the debugger's default interactive mode is turned off, OML commands can be executed automatically.

By default, the Interactive mode check box is selected in the Twin Activate debugger dialog box. In interactive mode, you must execute OML commands manually during each pause. If you deselect the Interactive mode check box, the content of the OML commands text box is automatically executed during each pause, and then the simulation immediately continues as if the CONTINUE button were clicked.

Non-interactive mode can be used to program operations on the time history of signals by executing a simple OML script during simulation.


This example uses the BoocWen damper system demo model. The objective is to register the states and their corresponding times for every call to the SuperBlock/Integral block and plot the state time history.

OML variables X and T are used to store the state and time values. They are initially set to empty matrices. At each step of the simulation, points are added to them.

The following script is entered in the OML commands text box:
if prepost==-1, X=[], T=[],
elseif prepost==1, X=[X,x];T=[T,t]; 
elseif prepost==3, plot(T,X)
The pause conditions are:
  • Blocks to pause: SuperBlock/Integral
  • Included actions: Output update (flag 1)
  • Do not include try mode calls
  • Included phases: Only post call
Before starting, click Exec to initialize X and T. Then click START.
Note: OML commands are executed when entering a pause, not when leaving it. This is why the OML commands should be executed to initialize X and T.
The resulting plot is below: