Rockwell Automation 1768-CNxxx ControlNet Communication Modules - Manual (Page 15)

Rockwell Automation Publication CNET-IN005C-EN-P - July 2014 15
Install a 1756 ControlNet Communication Module Chapter 1
Connect the Module to a
ControlNet Network You can connect the module to the ControlNet network by using a tap, catalog
numbers 1786-TPR, 1786-TPS, 1786-TPYR, 1786-TPYS, or 1786-TCT2BD1.
This example shows a ControlNet network using redundant media.
WARNING: If you connect or disconnect the communication cable with power
applied to this module or any device on the network, an electrical arc can occur.
This could cause an explosion in hazardous location installations.
Be sure that power is removed or the area is nonhazardous before proceeding.
WARNING: Do not use the USB port in hazardous locations.
ATTENTION: The USB port is intended only for temporary local programming
purposes and is not intended for permanent connection. The USB cable is not to
exceed 3.0 m (9.84 ft) and must not contain hubs.
1756-CN2R Module in a
1756-A4 Chassis
ControlNet Node
Redundant Media
(Optional)
ControlNet Node
ControlNet Link
TIP For network connections, we recommend taps with a straight connector
(catalog number 1786-TPS or 1786-TPYS) because of the location of the BNC
connectors on the bottom of the module.