CAN Node Identifier and Message Identifier

Discussion in 'General Electronics Chat' started by electronicsLearner77, Mar 3, 2018.

  1. electronicsLearner77

    Thread Starter Active Member

    May 26, 2012
    125
    1
    Suppose i have a Engine ECU with CAN ID 0x300 and it is transmitting some 3 TX messages what will be the relation between the CAN ID and the Tx messages? I mean to say all the Tx Messages should have an ID. So they will be something like 0x300, 0x301,0x302 etc. Please help.
     
  2. Papabravo

    Expert

    Feb 24, 2006
    12,284
    2,723
    CAN Identifiers are NOT connected to a particular node UNLESS a higher level protocol than CAN mandates such a connection between CAN identifiers and Node address. I could write you chapter and verse on how you might or might not want to do this. If we don't have a higher level protocol than CAN involved then a designer is free to whatever she wants.
     
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