Rockwell Automation DeviceNet Media Design Installation Guide - Manual (Page 15)

Publication DNET-UM072C-EN-P - July 2004
Get Started 1-5
Basic DeviceNet network
Understand the topology
The DeviceNet cable system uses a trunk/drop line topology.
This figure shows a basic DeviceNet network and calls out its basic components.
TR TR
Power
Supply
TR terminating resistor
device or node
1
3,4
2
2
Checklist
5
trunk line
drop lines
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D
Understand the
Media 1
You must terminate the trunk line at both ends
with 121
Ω
, 1%, 1/4W or larger terminating
resistors.
device or node
TR TR
trunk line
drop line
TR = terminating resistor
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