This tool allows you to view your CAN signals and compare how they are formatted in Intel and Motorola formats
This is to be added shortly as it is currently being devised by Richard so we can explain what the tool is for and that it is also a feature of X-Analyser
There are three main formats in CAN: Intel, Motorola Forward and Motorola Backward. A very commonly used format in the automotive sector is Motorola Backward. Intel is designated as the standard usage in all J1939 applications. Motorola Forward is still used, but not commonly. It is considered confusing to work with.
Here’s an example that shows a signal (e.g. engine speed) is located in a CAN frame’s Data field at position Start Bit of 48, and its length is 16 bits. Also, we show the Data field is a total of 8 Bytes long (DLC 8).
In this example, you can see the differences in the bit placing in the three formats. This is relayed to the microprocessor on how to extract the data from the CAN controller and utilise the data in its calculations. When building up CAN database files, it is essential to understand which format is specified for your application.