Rockwell Automation 1768-CNBR CompactLogix ControlNet Communication Module Installation Instructions User Manual
Page 20
20 CompactLogix ControlNet Interface Module
Publication
1768-IN006A-EN-P - September 2007
Connecting a Desktop Computer Directly to the ControlNet Network
A 1786-TPR, 1786-TPS, 1786-TPYR, or 1786-TPYS cable can be connected
from a desktop computer with either a 1784-PCIC or 1784-PCICS card
directly to an existing ControlNet network. A desktop computer connected
through this cable is counted as a node and must have a unique network
address (MAC ID) less than or equal to the maximum unscheduled node
(UMAX).
When connecting the module to a ControlNet network, you should also refer
to the following documentation:
• ControlNet Coax Taps Installation Instructions, publication
• ControlNet Coax Media System Planning and Installation Manual,
publication
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.
ATTENTION
If a SoftLogix5800 processor is running on the computer containing
the 1784-PCIC or 1784-PCICS card, do not use the 1786-CP cable to
connect the card to the ControlNet network. Instead, connect the
card directly to the ControlNet network.