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IV.2 Connection to BRP Rotax Engines
BRP CAN protocol differs from J1939 and Volvo Penta EVC protocols and requires configuration
of the Device. BRP CAN diagnostics connector wiring is also differ from the Device’s engine
connector wiring; you should change the pins in the connector or use an adaptor cable.
The Device supports up to two BRP engines on a network. The following data are supported:
• engine speed;
• engine hours;
• engine temperature;
• boost pressure;
• keyswitch battery voltage;
• fuel rate;
• fuel tank level;
• engine warnings transmitted in J1939 messages with PGN 65226; native engine warnings
(see Table 3 in VI.3)
To activate BRP CAN protocol support for most engines, you should add the following lines
to the configuration file (see V.19 and V.20 for details):
BRP_ROTAX=ON
ENGINE_CAN_SPEED=500
Please note that the Device must be rebooted before the new CAN bus speed comes into effect. Most
BRP engines have 500 kbps CAN speed, but some models use 250 kbps. If you do not get any data, try
to set 250 in the second parameter. If get RPM and engine hours, but no fuel rate and oil pressure, set
the HANDSHAKE value to BRP_ROTAX setting.
Usually, that is all that you need to do to change in the default settings.
Engines in a BRP CAN network have no J1939 addresses, but addresses are used in the Device’s