Rockwell Automation 1757-FFLDC4 ControlNet Foundation Fieldbus Linking Device Installation Instructions - Manual (Page 13)

ControlNet Foundation Fieldbus Linking Device 13
Publication 1757-IN022B-EN-P - August 2009
Wiring the Linking Device
To wire the linking device, complete the following sections.
Wire Requirements
The F OUNDATION Fieldbus recommendation for the cable connecting
fieldbus devices is Type A, 0.8 mm 2 (18 AWG) shielded, twisted-pair wire. It is
important to calculate how the planned topology for your fieldbus segment,
selected wiring, supplied power, and intended mix of fieldbus devices may
impact the overall performance of a fieldbus network. For more information,
see the F
OUNDATION Fieldbus specifications at http://www.fieldbus.org ,
publication AG-140 .
ControlNet Ports
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.
IMPORTANT
In a non-redundant system, connect the ControlNet cable to Port A on the
linking device. Port B is left unconnected.
In redundant system, all devices on a channel must be connected through
the same cable. That is, all channel A device ports connect to one cable; all
channel B device ports connect to the other cable.
44419
Connect your ControlNet cables to the ControlNet
port on the side of the linking device. Two ports
(A and B) are provided for redundant media
ControlNet connections.