18 Rockwell Automation Publication CNET-IN005A-EN-P - May 2011
Chapter 1 Install a 1756 ControlNet Communication Module
The 1786-CP cable can be plugged into any ControlNet network product’s NAP
to provide programming capability on the ControlNet network. A programming
terminal connected through this cable is counted as a node and must have a
unique network address.
Connect to the Module via
the USB Port
The 1756-CN2/B, 1756-CN2R/B, and 1756-CN2RXT communication
modules include a USB port. For more information about USB setup and
configuration, refer to Appendix A
.
ATTENTION: Use a 1786-CP cable when connecting a programming
terminal to the network through an NAP. Using a commercially available
RJ-style cable could result in network failure.
WARNING: The NAP is intended for temporary local programming
purposes only and not intended for permanent connection. If you connect
or disconnect the NAP cable with power applied to 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: The USB port is intended for temporary local programming
purposes only and not intended for permanent connection. If you connect
or disconnect the USB cable with power applied to this module or any
device on the USB 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.
A Samtec Inc. RSP-119350 USB cable is required to maintain hazardous
location certifications.
WARNING: Series B of the 1756-CN2, 1756-CN2R, and 1756-CN2RXT
modules have an industrial Type B USB port. The port has the same
electrical characteristics as other Type B ports, but a higher cable pull-out
rating.
For typical applications in nonhazardous environments, you may use any
high-quality USB cable. If used in a hazardous location, a Samtec Inc. RSP-
119350 USB cable is required to meet the 15-Newton pull test for hazardous
environments.
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