<< J1939 Stack – CAM11/CAM21 Client/Server Extension <<

The J1939 parameter groups CAM11, CAM21 and CEM are defined in the J1939 Digital Annex to be used as CANopen Application Messages and CANopen Emergency Messages. The CANopen specification CiA 510 defines how to use these 3 PGs to use the classical CANopen SDO and Emergency protocol in J1939 networks.

In order to use these services within a J1939 device, we offer optionally a CAM11/CAM21 server or client extension for our J1939 protocol stack.

The CAM11/CAM21 Server Extension provides functions to implement an SDO server and a CANopen object dictionary in a J1939 devices. The object dictionary may start at index 0x2000 and the objects supports all CANopen features. Likewise all three SDO protocols (expedited, segmented and block transfer) are supported.
The CAM11/CAM21 Client Extension includes functions to use an SDO client and to read or write objects from another device that implements an SDO server using CAM11/CAM21.

Please contact us at service@emotas.de for additional questions.

For customers familiar with our CANopen stack we would like to emphasize that the API is the same as in our CANopen stack and all its SDO features can be used including SDO split indication (to delay an SDO response) or functions to handle large domains in smaller chunks for both the client and the server side. So especially a firmware download using CAM11/CAM21 is facilitated.  |||||


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