Getting Started

Using commstartup to Set Simulation Parameters

Before starting to build the model, enter

• commstartup
  

at the MATLAB prompt. This

• Sets the Simulink Boolean logic signals parameter to Off
• Sets default simulation parameters that are optimal for communications models

The Communications Blockset does not support signals with boolean data types. If you want to use Simulink blocks that output boolean data types, such as the Logical Operator block, in a model with blocks from the Communications Blockset, enter commstartup before building the model. The commstartup settings apply to any models you create during the current MATLAB session. You must enter commstartup at the beginning of each MATLAB session to establish these settings.

If you build a model without entering commstartup and subsequently decide to use Simulink blocks that output signals with boolean data types, turn off the model's Boolean logic signals parameter by entering

• set_param('my_model', 'BooleanDataType', 'off')
  

where my_model.mdl is the name of the model.

Building a Simple Model

Opening a New Model Window