xPC Target

RS-232 Asynchronous Mode

Use asynchronous mode when you do not need a response before continuing with other computations. You can achieve faster sample rates with the asynchronous mode since neither the Send or Receive blocks wait for a reply. As a result, the asynchronous mode blocks do not block as do the synchronous mode blocks. The application updates the outputs only when the entire package of data is received from the external device. This section includes the following topics:

• Notes for RS-232 Asynchronous Mode -- Overview for RS-232 communications with xPC Target blocks
• Adding RS-232 Driver Blocks (Asynchronous) -- Add the setup, send, and receive blocks you need to your Simulink model for RS-232 communication
• Creating RS-232 Message Structures (Asynchronous) -- Create the initialize, send/receive, and termination message structures you need in the MATLAB workspace
• Building and Running the Target Application (Asynchronous) -- Run a real-time application with RS-232 communication

Creating RS-232 Message Structures (Synchronous)

Notes for RS-232 Asynchronous Mode