Manual

22 Rockwell Automation Publication DRIVES-IN001M-EN-P - March 2014
Chapter 1 Wire/Cable Types
Communication
This section provides cable recommendations for these communication
protocols:
• DeviceNet on page 22
• ControlNet on page 23
• Ethernet on page 23
• Remote I/O and Data Highway Plus (DH+) on page 24
• Serial (RS-232 and RS-485) on page 24
DeviceNet
DeviceNet cable options, topology, distances allowed, and techniques are specific
to the DeviceNet network. For more information, refer to DeviceNet Media
Design and Installation Guide, publication DNET-UM072
.
In general, the four cable types for DeviceNet media meet these criteria:
• Round (thick) cable with an outside diameter of 12.2 mm (0.48 in.);
normally used for trunk lines, but can also be used for drop lines.
• Round (thin) cable with an outside diameter of 6.9 mm (0.27 in.);
normally used for drop lines, but can also be used for trunk lines.
• Flat cable, normally used for trunk lines.
• KwikLink drop cable, used only in KwikLink systems.
Round cable contains these five wires:
• One twisted pair (red and black) for 24V DC power.
• One twisted pair (blue and white) for signal.
• One drain wire (bare).
Flat cable contains these four wires:
• One pair (red and black) for 24V DC power.
• One pair (blue and white) for signal.
Drop cable for KwikLink is a 4-wire, unshielded, gray cable.
The distance between points, installation of terminating resistors, and chosen
baud rate are significant to the installation. For more information, refer to the
DeviceNet Media Design and Installation Guide, publication DNET-UM072
.