I am trying to connect ICP CON i-7565 (USB <-> CAN interface) to a custom made device (supporting CAN 2.0B, proved to work with PCL-841 card). Although I think I have configured the Baud rate and acceptance code/mask correctly, I can't see any CAN messages coming from the device (ICP provides a tool that should allow me to send and receive CAN messages).
I-7565 might be wrong interface for me, I might have misconfigured it, or it is simply broken. Or I am just doing something wrong out of my ignorance. I don't think anyone can help me with my specific problem, so I am rather asking for general information on how are problems with CAN bus identified and analyzed. In TCP/IP for example, you would call ping, you'd recheck your IP address, gateway settings, etc.
Question is: How do you troubleshoot CAN bus communication?