How do VBOXs use CAN?
The robust nature of CAN Bus has meant that it has become widely used in industry for carrying measurement data in harsh environments. Because of this, Racelogic adopted CAN Bus as a method for transferring data between the VBOX data loggers and external modules such as the ADC03 and TC8. The VBOX uses CAN in two ways: 1) The first is simply to transmit GPS data for use with the Multifunction display or other third party loggers. The format of the GPS data within the messages is fixed and documented in the various VBOX user guides. 2) The second way that VBOX uses CAN Bus is, as previously mentioned, to communicate with external Racelogic modules. When a VBOX is first powered up, it scans the CAN Bus, looking for any Racelogic modules. If a module is found, the VBOX will send out a CAN message to request data from it in synchronisation with incoming GPS data. The module will reply to the VBOX request with its measured input value (temperature, yawrate, voltage, etc). The CAN identifier
