Rockwell Automation DeviceNet Media Design Installation Guide - Manual (Page 38)

Publication DNET-UM072C-EN-P - July 2004
2-2 Identify Cable System Components
TIP
The catalog numbers listed in this document are not
representative of the full range of available DeviceNet
media products. For a complete list of DeviceNet media,
refer to the On-machine Connectivity Catalog,
publication M115-CA001.
Component Description Component Description
Trunk line The cable path between terminators that
represents the network backbone
- can be made of thick, thin, or flat cable
- connects to taps or directly to device DeviceBox tap A junction box that allows 2, 4, or 8 drop lines
to connect to the trunk line.
Drop line The drop line is made up of thick or thin cable.
- connects taps to nodes on the network. DevicePort tap A junction box with sealed connectors that
allows 4 or 8 drop lines to connect to the trunk
line.
Node/device An addressable device that contains the
DeviceNet communication circuitry. PowerTap tap The physical connection between the power
supply and the trunk line.
Terminating resistor The resistor (121 W, 1%, 1/4 W or larger)
attaches only to the ends of the trunk line. Open-style tap Screw terminals that connect a drop line to the
trunk line.
Open-style connector Used with devices not exposed to harsh
environments. KwikLink Micro tap A single-port connection to flat cable available
in both sealed and unsealed versions.
Sealed-style
connector Used with devices exposed to harsh
environments. KwikLink Open-Style
tap A single terminal connection to flat cable
available only in unsealed versions.
T-Port tap A single-port connection with sealed connector. KwikLink Terminator A terminating resistor for use with flat cable,
available in both sealed and unsealed versions.