FAQ

There is no single fixed number for every CAN bus system. The number of devices depends on factors such as transceiver capability, bit rate, cable length, bus loading, termination, and overall network design. In practical systems, engineers must design the bus so signal quality and timing remain stable across all connected nodes.

Classical CAN supports up to 8 bytes of data per frame, while CAN FD supports up to 64 bytes. CAN FD also allows a faster data phase, which helps improve data throughput for modern vehicle ECUs, diagnostics, battery systems, and higher-data applications.

For Classical high-speed CAN, the maximum bit rate is generally 1 Mbit/s under ISO 11898-2. CAN FD can transmit data faster in the data phase and supports larger payloads, while CAN XL can support data throughput up to 20 Mbit/s depending on the transceiver and network design.

CANH stands for CAN High, and CANL stands for CAN Low. They are the two signal lines used in a CAN bus network. CAN bus uses differential signaling, meaning devices read the voltage difference between CANH and CANL to transmit data more reliably in noisy environments.

The main advantages of CAN bus include reliable communication, reduced wiring, strong noise resistance, priority-based message handling, real-time data exchange, and easier system expansion. These features make it suitable for vehicles, industrial equipment, and other systems that require stable device communication.

CAN bus is used to connect multiple electronic devices so they can exchange data through a shared communication network. It is widely used in vehicles, industrial automation, medical equipment, energy systems, heavy-duty machinery, railway systems, marine systems, and embedded devices.