1 Answers
Laxmi answered 4 years ago
The characteristics of the J1939 protocol are:
- Higher-layer protocol based on Controller Area Network (CAN)
- Provides serial data communication between Electronic Control Units (ECUs) in any kind of heavy duty vehicle.
- Extended CAN identifier (29 bit)
- The bit rate of 250 kbit/s
- Peer-to-peer and broadcast communication
- Transport protocols for up to 1785 data bytes
- Network management
- Definition of parameter groups for commercial vehicles and others
- Manufacturer-specific parameter groups are supported
- Diagnostics features
- Maximum 30 nodes (ECUs) in a network