Rockwell Automation 1768-CNxxx ControlNet Communication Modules - Manual (Page 16)

16 Rockwell Automation Publication CNET-IN005C-EN-P - July 2014
Chapter 1 Install a 1756 ControlNet Communication Module
To connect the module to the network with a tap, perform this procedure.
1. Remove and save the dust caps from the ControlNet taps.
2. Connect the tap’s straight or right-angle connector to the module’s BNC
connector.
3. Apply power to the module and check the status indicators to determine
whether the power supply and module are operating properly.
For more information about status indicators, see 1756 ControlNet Status
Indicators on page 37 .
ATTENTION: Do not allow any metal portions of the tap to contact any
conductive material. If you disconnect the tap from the module, place
the dust cap back on the straight or right-angle connector to prevent
the connector from accidentally contacting a metallic grounded surface.
If your network supports Then connect the tap’s connector
Nonredundant media
(all 1756-CN
x modules)
From trunkline A to channel A on the module.
Redundant media
(1756-CNBR, 1756-CN2R, 1756-CN2RXT,
and 1756-CN2RK modules) From trunkline A to channel A on the 1756-CN2R module.
From trunkline B to channel B on the 1756-CN2R module.
IMPORTANT To avoid accidentally reversing the tap connections, before making your
connection, check the tap drop cable for the label indicating the attached
segment. Accidental connection reversals produce incorrect status displays and
require troubleshooting.
Trunkline A Trunkline B
1756-CN2 Trunkline A
1756-CN2R Trunklines A and B
Dust Cap
Dust Cap
32464
Nonredundant Media Redundant Media
Tap Tap Tap
Network
Network