Address Claim Procedure; Nmea2000 Logging - Novatel SMART7 Installation And Operation Manual

Chapter 7 CAN Bus
< J1939STATUS NODE1 FAILED <attempt count> 0xFE
4. CANCONFIG CAN1 OFF
< J1939STATUS NODE1 DISABLED 0 0xFE
5. J1939CONFIG NODE1 CAN1 <addresses>
6. CANCONFIG CAN1 ON
< J1939STATUS NODE1 CLAIMING 1 <address>
< J1939STATUS NODE1 CLAIMED <attempt count> <address>

7.2.5 Address Claim Procedure

To become operational on the CAN bus, an OEM7 receiver must claim a J1939 address. The pre-
ferred address and a range of alternative addresses are specified using the J1939CONFIG com-
mand. When a configured receiver is placed on bus, it may make multiple attempts to claim an
address. It may also have its address bumped by a higher priority device claiming the same
address.
While the device is attempting to claim an address, the J1939STATUS log reports a status of
CLAIMING and automatically tries to claim the next allowed address. Depending on the
J1939CONFIG parameters, an address different from the J1939CONFIG preferred address
may be claimed or the address claim procedure can fail entirely. If no addresses could be
claimed, a FAILED status is reported and the receiver takes no further action. To recover from
this failure, take the receiver off bus using the CANCONFIG command and change the CAN
address configuration using the J1939CONFIG command.
The address can also be assigned using J1939 Commanded Address message sent by another
ECU on the bus, such as a tester unit. The commanded address always overrides the address
specified using J1939CONFIG command. When the Commanded Address is received, the
receiver reports a status of CLAIMING followed by CLAIMED. Restarting CAN using the
J1939CONFIG command or CANCONFIG command clears the commanded address; the
Address Claim procedure will be executed again based on parameters specified in the
J1939CONFIG command.

7.3 NMEA2000 Logging

OEM7 receivers support both a subset of the standard NMEA2000 PGNs, as well as NovAtel pro-
prietary PGNs.
All NMEA2000 logs are configured using the LOG command, where the COM port is a CAN port
(CCOM). The CCOM port must be associated with a J1939 node using the CCOMCONFIG com-
mand. If only NMEA2000 logs are needed, CCOMCONFIG parameters other than J1939NODE
may be ignored.
To enable NMEA2000 logs:
1. Configure the CAN bus. See Configuring the CAN Bus on page 100.
2. Enable the CCOM port on the CAN bus node using the CCOMCONFIG command.
3. Optionally, specify a custom PGN for the OEM7 specific NMEA2000 logs using the
PGNCONFIG command.
4. Enable the desired NMEA2000 logs.
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