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Operation Chapter 3
SMART-AG User Manual Rev 2 33
pdpmode relative auto
The following command is recommended to enable CAN:
setcanname 305
NovAtel has registered manufactured ID code 305 with J1939. When complete, your configuration
can be saved with the SAVECONFIG command. See the OEMV Family Firmware Reference Manual
and APN-050 SMART-AG Firmware Release for further details on these commands.
3.3.5 Configuration Notes
For compatibility with other GNSS receivers, and to minimize message size, it is recommended that
you use the standard form of RTCA, RTCM, RTCMV3 or CMR corrections as shown in the base and
rover examples above. This requires using the INTERFACEMODE command to dedicate one
direction of a serial port to only that message type. When the INTERFACEMODE command is used
to change the mode from the default, NOVATEL, you can no longer use NovAtel format messages.
If you wish to mix NovAtel format messages and RTCA, RTCM, RTCMV3 or CMR messages on the
same port, you can leave the INTERFACEMODE set to NOVATEL and log out variants of the
standard correction messages with a NovAtel header. ASCII or binary variants can be requested by
simply appending an "A" or "B" to the standard message name. For example on the base station:
interfacemode com2 novatel novatel
fix position 51.11358042 -114.04358013 1059.4105
log com2 rtcm1b ontime 2
Using the receiver in this mode consumes more CPU bandwidth than using the native
differential messages as shown in Section 3.3.1, Base Station Configuration on Page 31.
At the rover station you can leave the INTERFACEMODE default settings (interfacemode com2
novatel novatel). The rover receiver recognizes the default and uses the corrections it receives with a
NovAtel header.
The PSRDIFFSOURCE and RTKSOURCE commands set the station ID values which identify the
base stations from which to accept pseudorange or RTK corrections respectively. They are useful
commands when the rover station is receiving corrections from multiple base stations. Refer to the
GPS+ Reference Manual for more information on SBAS, available from our website at:
http://www.novatel.com/support/docupdates.htm
All PSRDIFFSOURCE entries fall back to SBAS (even NONE) for backwards compatibility.
At the base station it is also possible to log out the contents of the standard corrections in a form that is
easier to read or process. These larger variants have the correction fields broken out into standard
types within the log, rather than compressed into bit fields. This can be useful if you wish to modify
the format of the corrections for a non-standard application, or if you wish to look at the corrections