Rockwell Automation 1786-series ControlNet Coax Media Planning and Installation Guide - Manual (Page 27)

Publication CNET-IN002B-EN-P - June 2010 27
Plan a ControlNet Coax Media System Chapter 2
Install Repeaters in Parallel
When you install repeaters in parallel you create smaller, isolated segments that
have less signal noise than larger segments. You can install a maximum of 48
repeaters - the maximum number of taps per 250 m (820 ft) segment - on any
one segment. If your link is configured using repeaters in parallel, you count
one of the repeater taps for one segment and the other repeater tap for the
parallel segment that the repeater is connecting to the backbone network.
The illustration shows an example of repeaters used in parallel.
IMPORTANT
Under no circumstances can delay exceed 121 µs each way in a
network. For more information, see
page 30 .
1794-ACNR15
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-RPCD
REPEA TER DU AL COPPER MODULE 1786-RPCD
CH 1 CH 2
1786-RPA
32041-M