"Evolution instead of revolution" – that is the motto of the new CAN-Bus FD! It wasn’t the integration of a completely new data bus system that was at the forefront when CAN-FD was introduced, but rather the expansion and improvement of the existing one. The result was CAN-FD: taking all known mechanisms of the CAN bus, the data transmission speed and data volume in a message were increased considerably. “FD” means “flexible data rate”, which means that as a message is being transmitted, the speed of data transmission in the data field can be increased to up to 8 MBps! But that’s not all: now 64 bytes instead of the previous 8 bytes can be transmitted in a message. As a result, these two characteristics mean that with CAN bus FD, a longer message will be transmitted faster than a considerably shorter message is sent with the standard motor CAN bus.
This is especially beneficial for the flash duration for controllers. Vehicle software updates can now be carried out considerably faster than before.
LEYBOLD offers a CAN FD device set with which CAN FD messages can be freely defined and transmitted. These can be recorded on the logic level on the PC and on the physical level with an oscilloscope. Of course standard CAN messages can also be produced and transmitted for comparison.
