How can I tell that the controller has received an RS232 command?
The controller will “echo”, or send back, every character it has acknowledged as valid. By reading back the returned characters and comparing them to those that were sent, it is easy to verify that there was no communication error. Furthermore, at the end of each command, the controller will send back a “+” (OK) or “-” (error) character to indicate whether the command was acknowledge and executed properly.
Related Questions
- What are the maximum recommended distance between SmartMotor and the computer/controller for communication through RS232, RS485, AniLink, and I/O connector?
- Who checks the status (failure or success) of a command, the controller simulation, or the processor?
- How can I tell that the controller has received an RS232 command?
