Novatel GNSS Receiver and Antenna SMART-AG - Manual (Page 66)

66 SMART-AG User Manual Rev 5
B.2 COM Configure COM Port
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).
Abbreviated ASCII Syntax: Message ID: 4
COM [port] bps [parity[databits[stopbits[handshake[echo[break]]]]]]
Factory Default:
com com1 9600 n 8 1 n off on
com com2 9600 n 8 1 n off on
com com3 9600 n 8 1 n off on
com aux 9600 n 8 1 n off on
ASCII Example:
com com1,57600,n,8,1,n,off,on
 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.

On SMART-AG receivers with Bluetooth, the default settings for COM3 are:
com3 115200 n 8 1 cts off off
Changing the COM3 serial port settings could interfere with the ability to
communicate using Bluetooth.
 Use the COM command before using the INTERFACEMODE command on
each port.