Rockwell Automation 1786-series ControlNet Coax Media Planning and Installation Guide - Manual (Page 26)

26 Publication CNET-IN002B-EN-P - June 2010
Chapter 2 Plan a ControlNet Coax Media System
Configuring Your Link with Repeaters
When you configure your link using repeaters, you can install them in series,
parallel, and a combination of series and parallel.
Install Repeaters in Series
When you install repeaters in series, use the RSNetWorx for ControlNet
software to verify that the system is an allowable configuration. The system
size is based on the maximum number of repeaters in a series and length of the
media used between any two nodes.
•
20 repeaters in series, if using 1786-RPA/B repeater adapters
•
5 repeaters in series, if using 1786-RPA/A repeater adapters
Repeaters add delay in the network. The delays between redundant cabling at
any point in the network should be equally maintained. See
page 30 for limits.
A repeater can be connected to a segment at any tap location. For redundant
networks, the repeaters of each segment must be in the same cable section
between taps. See
page 32 for an example.
The illustration shows an example of 1786-RPCD repeaters wired in series.
TIP
When using the 1786-RPFM module, we recommend horizontal
mounting if cabinet temperatures are expected to approach
60 °C (140 °F). If your expected temperatures are much lower
than 60 °C (140 °F), vertical mounting is acceptable. If using
vertical mounting, we recommend that the 1786-RPA module be
mounted at the top.
1794-ACNR15
1794-ACNR15
1786-RPCD
REPEA TER DU AL COPPER MODULE 1786-RPCD
CH 1 CH 2
1786-RPA 1786-RPCD
REPEA TER DU AL COPPER MODULE 1786-RPCD
CH 1 CH 2
1786-RPA
31484-M