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Figure 31: NAVconfig CAN output configuration tab
You can select individual messages or enable all messages by choosing them from the table displayed.
Depending on the baud rate selected, the suggested maximum CAN messages per second will change. A
warning message will appear if the combined rate of all current navigation and status messages will overload
the CAN bus at the selected baud rate.
Disabling or reducing the frequency of navigation or status messages will remove the warning and ensure
reliable operation of the CAN bus. Increasing the baud also works, but the baud rate must be common to all
devices on the bus. When using an RT-ANA, the default baud rate is 1 MBaud.
The Export DBC file button generates a CAN DBC library listing all navigation and status messages that are
enabled (not greyed-out). The DBC file does not include channels defined under the acquisition tab. The
navigation status message binary format is described in the CAN Interface manual. The status message binary
format is the same as the NCOM status message binary format as described in the NCOM Description manual.
Those status messages that do not have signals listed against them are not described at the signal level in the
DBC file. The binary format of these messages is quite complex and as such the DBC file it not sufficient to
describe the decoding process.
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