Novatel 01018518 Benutzerhandbuch

This command permits you to configure the receiver’s asynchronous serial port communications 
drivers.

The current COM port configuration can be reset to its default state at any time by sending it two 
hardware break signals of 250 milliseconds each, spaced by fifteen hundred milliseconds (1.5 
seconds) with a pause of at least 250 milliseconds following the second break. This will:

•

Stop the logging of data on the current port (see UNLOGALL command in the 
OEMV Family Firmware Reference Manual).

•

Clear the transmit and receive buffers on the current port.

•

Return the current port to its default settings (see Factory Defaults section in 
Chapter 2 Commands of the OEMV Family Firmware Reference Manual).

•

Set the interface mode to NovAtel for both input and output (see 
INTERFACEMODE command in the OEMV Family Firmware Reference Manual).

 Baud rates higher than 115,200 bps are not supported by standard PC hardware. Special PC 

hardware may be required for higher rates, including 230400 bps, 460800 bps and 921600 bps. 
Also, some PC's have trouble with baud rates beyond 57600 bps.

COM [port] bps [parity[databits[stopbits[handshake[echo[break]]]]]]

com com1 9600 n 8 1 n off on

com com2 9600 n 8 1 n off on

com aux 9600 n 8 1 n off on

 Do not alter the COM3 port configuration, since COM3 is reserved for Bluetooth.

com com1,57600,n,8,1,n,off,on

 Watch for situations where the COM ports of two receivers are connected together and the baud 

rates do not match. Data transmitted through a port operating at a slower baud rate may be 
misinterpreted as break signals by the receiving port if it is operating at a higher baud rate. This is 
because data transmitted at the lower baud rate is stretched relative to the higher baud rate. In this 
case, configure the receiving port to have break detection disabled using the COM command.