Rockwell Automation Allen-Bradley ControlNet 1786 Series, Installation Instructions Manual

Page: 26 / 74

Publication CNET-IN002A-EN-P - December 2001
2-10 Plan a ControlNet Coax Media System
Install Repeaters in a Ring
For a ring toplogy, you must use the ControlNet Long-distance Fiber
Repeater (catalog number 1786-RPFRL) or Extra-long-distance Fiber
Repeater (catalog number 1786-RPFRXL).
Refer to the Installation Instructions that shipped with your repeater
for an example ring toplogy drawing.
Determine What Type of
Connectors You Need
These connectors are available:
IMPORTANT
You can order dust-tight (IP65) and
corrosion-resistant (IP67) versions of these
connectors. See the Allen-Bradley
ControlNet Cable
System Component List (publication AG-2.2) for a
complete list of part numbers.
Use this connector: To:
cable connector attach trunk-cable sections to a tap’s
BNC or TNC connector
bullet (jack-to-jack) reserve a space in the trunk cable for
future installation of a tap or to splice a
trunk cable
barrel (plug-to-plug) connect two adjacent taps without a
trunk-cable section between them
isolated-bulkhead
(jack-to-jack) go through grounded panel walls while
maintaining the shield isolation of the
trunk-cable.
tap dummy load cap off installed taps that have yet to
be connected to a node
right angle
(jack-to-plug)
provide a 90
°
bend in your cable
(prevents bending your cable
excessively).
See Chapter 3 for the bend radius
specification.