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P/N 016-0171-493 Rev. I 35
CAN Networking and Diagnostics
CAN Troubleshooting
Although the control algorithm is located within the CAN node, all of the same troubleshooting techniques that
are used in a traditional hard-wired or serial control systems still apply to a CAN system and the behavior of the
system remains the same. Flow and speed sensors, as well as the control valve and boom valves, are used in
the same fashion.
CAN Node Off-line Errors
Occasional reports have been received on Raven consoles sporadically losing communication with one or
more CAN nodes. The most likely causes for this problem are:
1. Corroded and/or open connections in the circuit.
2. Computer and/or CAN node logic power and grounds connected to a “dirty” power source (dirty power is
defined as any circuit with a variable load that exceeds 1 ampere). This is especially true of circuits loaded
by electrical coils.
3. Computer and/or nodes connected to different power and/or ground sources. This can result in components
operating at different voltage planes.
Refer to the Raven CANbus Network Installation Manual for detailed troubleshooting procedures and
information.
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