Seed Hawk Raven 2011 - Manual (Page 31)

CHAPTER
3
Manual No. 016-3001-003 21
Chapter 3
CAN (Controller Area
Network) Setup
Overview of a Raven CANbus System
A Controller Area Network, or CAN, is a high-integrity serial data communications bus that operates at a data
rate of 250 kilobits per second for real-time control applications and uses special CAN cables and terminators
for operation. The CAN protocol has excellent error detection and confinement capabilities, making it very
suitable and reliable for agricultural applications.
CAN systems allow products to be added to a control system at any time. Five product control nodes can be
connected to the Viper Pro control system for any combination of liquid, granular, or chemical injection
applications.
Power for a CANbus system is separated into high and low current.
• High current power is used to provide working power to valves and other components of the application
control system.
• Low current, or logic, power is used to provide power for computing and processing the various commands
sent via the CANbus from the control console to the nodes.
CAN Terminators signal the end of the CANbus and condition CANbus signals to control power surges that
may cause signal or communication errors.
Note:
The cab terminator is built into the Seed Hawk
®
switch box mounted in the cab.