Installation guide

Planning and Designing RIO Cable System
890 USE 101 00 October 2006 43
Flexible Cable Two types of flexible cable can be used in Modicon RIO cable systems—RG-6 and
RG-11.
RG-6 is a 5/16 in. flexible cable with moderate noise immunity and moderate signal
loss. The loss varies among manufacturers and cable types. Most applications use
RG-6 for drop cables; RG-6 can be used as the trunk cable on small networks.
Modicon 97-5750-000 RG-6 quad shield cable can be ordered on 1000 ft. rolls:
Modicon also provides pre-assembled RG-6 drop cables in 50 ft. (AS-MBII-003) and
140 ft (AS-MBII-004) lengths.
RG-11 is a 3/8 in. flexible cable with good noise immunity and low signal loss. RG-
11 cable is suitable for use as trunk cable in most industrial applications and may be
used as drop cable in very high noise environments. Modicon 97-5951-000 RG-11
quad shield cable can be ordered on 1000 ft rolls.
Semirigid Cable Semirigid cable construction is similar to that of flexible cable except that it uses a
solid aluminum shield for 100% shield coverage. Semirigid cable has high noise
immunity and very low signal loss, making it ideally suited for the main trunk cable
when maximum distance and/or high noise immunity is needed. It is not generally
used for drop cable because of its inflexibility. Semirigid cable is available in sizes
that usually range from 1/2 ... 1 in. and up. Only large applications, or high noise
environment applications, will need to use this type of cable.
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com