RE: CANopen question

In SAE J1939 you have the address claim message specifically for this
purpose, but as it is an optional part there are a lot of manufacturers who
just don't bother to implement the specification making it effectively
useless in a lot of cases.

 

The simplest implementation would be that the node receiving a message from
a source address that it considers to be its own goes in some kind of error
state.

Signaling that over the CAN network itself is hard, due to the limitation
that no CAN id should be shared between nodes.

 

cheers,

Bram

 

From: [email protected] [mailto:[email protected]] On Behalf
Of John Dammeyer
Sent: vrijdag 12 februari 2016 19:00
To: [email protected]
Subject: [CANLIST] CANopen question

 

Suppose a technician accidentally installs two CANOpen motor drives with the
same nodeID.  Or two pressure transducers or Inclinometers.  Anything that
requires an external terminal and dongle to program the target ID.  

 

Is there a standardized way to ask nodes to report their NodeID when there
may be two on the bus with the same ID?

 

Thanks

John Dammeyer

 

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