Physical Layer and Media Features Section 1 Introduction
12 9ARD000015-600
Physical Layer and Media Features
The DeviceNet Physical Layer and Media includes the following features:
• Uses Controller Area Network (CAN) technology.
• Small size and low cost.
• Linear bus topology.
• Ability to operate at three data rates:
– 125 kBaud up to 500 m (
1640 ft) maximum.
– 250 kBaud up to 250 m (820 ft) maximum.
– 500 kBaud up to 100 m (328 ft) maximum.
• Bus wires containing both signal and power conductors.
• Low loss, low delay cable.
• Supports various media for drop line or trunk line.
• Supports drop lines upto 6 m (20 ft).
• Supports up to 64 nodes.
• Node removal without severing the network.
• Ability to support both isolated and nonisolated Physical Layers
simultaneously.
• Supports sealed media.
• Protection from wiring errors.
DeviceNet and Ethernet/IP share a common upper layer protocol called Common
Industrial Protocol (CIP). ABB's implementation leverages on this commonality and
allows DeviceNet devices to coexist at the controller level with EtherNet/IP. The
relationship of DeviceNet Physical Layer to EtherNet/IP is shown in Figure 2.
The information in the manual is derived from the Open Device Vendor
Association (ODVA) standards and recommendations. For more details, refer to
web site www.odva.org.
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