Rosemount TankRadar Rex DAU 2100, Service Manual

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Rosemount Tank Radar Rex
Chapter 3 Device Description
3-18
Service Manual
308012En, Ed.2
May 2013
3.2 Field Communication Unit (FCU)
The Field Communication Unit, FCU acts as a master of communications
on the Field Bus and as a slave on the Group Bus. The FCU is an
intelligent data concentrator that continuously collects input data from a
group of Radar Tank Gauges and Data Acquisition Units and stores it in
a buffer memory.
The heart of the FCU is a microprocessor with RAM and EEPROM for
data and program storage.
The FCU is delivered in an IP-65 weather protected, wall-mounted box of
the same type as for the Data Acquisition Unit. See Figure 3-13.
Figure 3-13. Field Communication Unit FCU 2160
Note! No explosion protection is provided so the Field Communication Unit
must be installed in a non-hazardous area.
Cable Outputs
Ground
Connection