Rockwell Automation 1786-series ControlNet Fiber Media Planning and Installation Guide - Manual (Page 34)

34 Rockwell Automation Publication CNET-IN001C-EN-P - October 2011
Chapter 2 Topology and Signal Considerations
1786-RPFS Module
The 1786-RPFS (0…300 m) module specializes in solving short-distance
applications. This system requires the use of pre-terminated cable assemblies. The
total attenuation for a fiber cable section must be less than 4.2 dB.
200/230 Micron HCS (hard-clad silica) Fiber
Use 200 micron HSC cable with the 1786-RPFS module for short-distance
applications. The 200 hcs cable is also known as a step index multi-mode type of
fiber cable.
1786-RPFM Module
The 1786-RPFM (0…3 km) module is designed to solve medium-distance
applications that require less than 3000 m per segment (9843 ft) between two
ControlNet fiber repeaters. You must terminate medium-distance cable in
the field.
The maximum length of a section is dependent on the quality of the fiber,
number of splices, and the number of connectors. The total attenuation for a
cable section must be less than 13.3 dB.
62.5/125 Micron multi-mode OM1 Fiber
Use 62.5/125 micron cable with the 1786-RPFM, 1786-RPFRL/B, and
1786-RPFRXL/B module for medium-distance applications. The OM1 cable is
a graded index multi-mode type of fiber cable.
1786-RPFRL/B Module
The 1786-RPFRL/B (0…10 km) module is designed to solve long-distance
applications that require up to 10,000 m (32,810 ft) between two ControlNet
network devices. You must terminate long-distance cable in the field.
The maximum length of a section is dependent on the quality of the fiber,
number of splices, and the number of connectors. The total attenuation for a
cable section must be less than 15 dB.
62.5/125 Micron multi-mode OM1 Fiber
Use 62.5/125 micron cable with the 1786-RPFM, 1786-RPFRL/B, and
1786-RPFRXL/B modules for long-distance applications. The OM1 cable is a
graded index multi-mode type of fiber cable.