PEAK-System Forum

With Callback Libraries you can evaluate, process, or modify data of received or transmitted CAN messages in your own way.

Callback Libraries are Dynamic Link Libraries (DLLs) that you can create yourself with suitable compilers and program them according to your needs. Once it is created, you include a Callback Library in a PCAN-Explorer project, so that you can assign the individual programmed functions to different events, which PCAN-Explorer triggers when it receives or sends CAN messages, and then calls the functions assigned to these events.

PCAN-Explorer passes special objects to the DLL functions as function parameters, which allow the respective function to access the data of the transmitted or received message. The function of the Callback Library can use the different properties and methods of these objects to process or modify the data bytes of the message according to its needs, or to perform other tasks. For example, a function could calculate a running counter or a checksum for the message and insert it into the data bytes at the correct location before it is transmitted, to ensure the integrity of the message and that it can be acknowledged by the recipient as a valid message.