Choose the fiber media system composition – Rockwell Automation 1786-series ControlNet Fiber Media Planning and Installation Guide User Manual
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Rockwell Automation Publication CNET-IN001C-EN-P - October 2011
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Get Started with the ControlNet Network Fiber Media System Chapter 1
Plan the Installation of the
Fiber Media Components
During the planning phase of your network design, create checklists to help you
determine the following components that are needed in an application:
• Number of nodes in your network
• Length of the fiber segments
• Number of fiber connectors and splices in your network
• Calculate the maximum allowable segment length
• Any additional repeaters and coax segments you need
Choose the Fiber Media
System Composition
The fiber repeater consists of the following:
• A 1786-RPA repeater adapter
• Up to two 1786-RPFRL/B (long-distance) or 1786-RPFRXL/B (extra-long
distance) fiber repeater modules
• Up to four 1786-RPFS (short-distance) or 1786-RPFM (medium-distance)
fiber repeater modules
It is allowable to mix these repeater modules on a single repeater adapter.
Refer to
to determine how many repeater modules you can
connect to one repeater adapter. The number of repeaters and the total cable
length depends on your network topology limits and the repeater modules
you select.
TIP
In a network containing a fiber repeater module, such as a
1786-RPFRL/B or 1786-RPFRXL/B module, you cannot have more
than 98 node addresses assigned.