Emerson Edition 4 Water Heater User Manual


 
6-1
Rosemount Tank Radar REX
Chapter 6 The Field Communication
Installation Manual
308014EN, Edition 4
May 2013
6. The Field Communication Unit
The Field Communication Unit (FCU) continuously polls data from the
Radar Tank Gauges and the Data Acquisition Units and stores it in a
buffer memory. The Field Communication Unit is the master on the Field
Bus but acts as a slave on the Group Bus.
Note! No explosion protection is provided, so the Field Communication Unit
must be installed in a non-hazardous area.
Figure 6-1. The Field Communication Unit.
6.1 FCU Enclosure
As standard the Field Communication Unit is shipped in a weather
protected, wall-mounted box of the same type as the Data Acquisition
Unit. The Field Communication Unit is built on a Printed Circuit Board
and may be delivered as such for mounting within a customer supplied
enclosure.
Ground
connection
Cable
outputs
FCU_2160.eps