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.

 

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.

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.