Can Bus Communications - Novatel SMART2 Series Installation And Operation User Manual

SMART2 Operation
data transfer rate may be lower and depends on the number of satellites being tracked, data fil-
ters in use, and idle time. It is therefore suggested that you leave yourself a margin when choos-
ing a data rate.
The minimum suggested baud rate for most applications is 115200 bps. If the buffer
overrun flag is present in the RXSTATUS log (refer to the
Logs Reference
Although the receiver can operate at data transfer rates as low as 300 bps, this is not
recommended. For example, if several data logs are active (that is, a significant amount
of information needs to be transmitted every second) but the bit rate is set too low, data
overflows the serial port buffers, causing an error condition in the receiver status that
results in lost data.
The following ports are supported and can be configured using the commands listed.
Receiver Type
SMART2
Change the COM Port Settings
To change the settings on a COM port, use the SERIALCONFIG command. For example:
To change the data rate of COM2 to 115200, enter:
l
SERIALCONFIG COM2 115200
To change the data rate of COM1 to 57600 and enable even parity, enter:
l
SERIALCONFIG COM1 57600 E
Communicating using a Remote Terminal
One method of communicating with the receiver is through a remote terminal. To communicate
with the terminal, the receiver requires only the RX, TX and GND lines be used. Ensure the ter-
minal's communications set up matches the receiver's port settings.
Communicating using a Computer
A computer can emulate a remote terminal as well as provide the added flexibility of supporting
multiple command batch files and data logging storage files. Use any standard communications
software package that emulates a terminal to establish bidirectional communications with the
receiver. Examples include NovAtel Connect and PuTTY. All data is sent as raw 8-bit binary or
ASCII characters.
Refer to Communicating with the Receiver on the next page for details.

3.1.2 CAN Bus Communications

The SMART2 supports J1939 and NMEA2000 CAN protocols.
The SMART2 has one CAN port—CAN1. CAN1 port supports data rates of up to 500 kbits/s.
SMART2 Installation and Operation Manual 1
Manual), log at a higher baud rate if possible.
Table 7: Serial Ports Supported
Port Supported
COM1, COM2, COM3
Agriculture Commands and
Configuration Command
SERIALCONFIG
22