CDBUS Bridge has two types of communication ports, which are 3 serial ports and 2 RS485 ports:
- Only one of the three serial ports will be in use at the same time. Inserting USB will switch over to the configuration-free USB serial port (the communication rate will not be affected by the selected baud rate);
- The two RS485 ports are internally connected for easy wiring (or pull up, pull down, and termination resistors).
The CDBUS Bridge has two modes, which are selected by the switch: