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C-4
Determine Your ControlNet Media Requirements
Determine How Many Taps
You Need
Tap
(1786-TPR, -TPS, -TPYR, -TPYS)
(1797-TPR, -TPS, -TPYR, -TPYS
Publication CNET-UM001C-EN-P - November 2005
The number of taps you need depends on the number of devices you want to
connect to the network. You need a tap for each node and fiber hub on a
segment.
If you plan to add nodes at a later date, you should consider ordering and
installing the cable and connectors for these additional nodes when you install
the initial network. This will minimize disruption to the network during
operation.
A disconnected drop cable can cause noise on the network.
IMPORTANT
Because of this, we recommend having only one
unconnected drop cable per segment for maintenance
purposes. Be sure to keep the dust cap on any unconnected
drop cable. If your cable system requires more than one
unconnected drop cable, unused drop cables should be
terminated with a tap terminator, such as the 1786-TCAP.
If you are planning future installation of additional nodes,
TIP
do not install the tap. Instead, install a BNC bullet
connector. For more information on BNC connectors, see
the section Determine What Type of Connectors You
Need.
Each tap kit contains:
Figure C.1 Contents of a Tap Kit
ControlNet Cable Labels
Dust Cap
For noise suppression, ferrite beads
are molded on the drop cable.
BNC Connector Kits
Universal Mounting bracket
Screws
Intrinsically Safe
Sheaths
41329
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