What is DeviceNet?
- It began life as CAN technology designed for cars.
- Cars required simple networks, and that simplicity is apparent in DeviceNet.
- Is a low-cost, simple alternative to much more complex networks.
- Most networks start with complexity and expand to meet Industrial Networking requirements. DeviceNet started simple and worked upward.
- Uses unique communication processes.
- DeviceNet includes self-diagnosis and message priority, among other things.
DeviceNet History
- 1986: Bosch introduces CAN.
- Robert Bosch unveils the network he created for vehicles at a conference in Detroit, Michigan.
- Early 1990s: Rockwell, Honeywell, and Cincinatti Milacron work toward higher-level protocol.
- Their collaboration fell through, but this alliance started work that would end in the creation of DeviceNet.
- Rockwell creates DeviceNet.
- Rockwell first adapted CAN to the Industrial Automation industry.
- 1994: Rockwell releases DeviceNet for ODVA regulation.
Device Roles
- Master Devices
- Issue commands.
- Control connections.
- Slave Devices
- Respond to commands.
- Accept connections.