Corrections Over CAN

All NovAtel supported correction types are supported over CAN ports (CCOM).

To send or receive corrections:

1. Configure the CAN Bus. See Configuring the CAN Bus.

2. Use the CCOMCONFIG command to configure the PGN and other CAN parameters used by the RTK corrections CAN messages.

   PGN: Use the PGN designated for corrections.

   Address:

   • Use 0xFF to receive corrections from any CAN address and to broadcast corrections to all CAN nodes.

   • Use 0x00 to 0xFE to send corrections to or receive corrections from a specific CAN node.

3. Use the INTERFACEMODE command to configure the CCOM interface mode.

   • To transmit corrections, use the desired INTERFACEMODE, e.g. RTCMV3
   • To receive corrections, it is recommended to use INTERFACEMODE AUTO.

Corrections configuration (CANCONFIG and INTERFACEMODE) for a particular CCOM port do not affect its NMEA2000 configuration. NMEA2000 logs coexist with correction messages, both incoming and outgoing.

Example for Receiving Corrections from Any Source

1. CCOMCONFIG CCOM2 NODE1 J1939 61184 6 0xFF

2. INTERFACEMODE CCOM2 AUTO NONE OFF

Example for Transmitting Corrections to 0x1C Node

1. CCOMCONFIG CCOM2 NODE1 J1939 61184 6 0x1c

2. INTERFACEMODE CCOM2 NONE RTCMV3 OFF