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Rosemount Tank Radar Rex
Chapter 4 Service
Service Manual
308012En, Ed.2
May 2013
4.2.7
Redundancy (option)
Introduction
In order to reduce the risk of communication failure between the
TankMaster
and the units connected to the TRL/2 field bus, two FCUs
can be connected to run in parallel. If one FCU fails, the other one
automatically takes over without any action from the operator. The FCUs
are connected with an extra cable allowing them to communicate. The
inactive FCU constantly checks if the connected FCU is active. If the
active FCU fails, it becomes inactive, and signals to the backup FCU to
take over. Then the backup FCU immediately switches to an active state.
Figure 4-22. Parallel Field Communication Units connected to the TRL/2
bus.
Redundancy cable
Field Bus 2
Field Bus 1
PC
Summary of Contents for TankRadar Rex DAU 2100
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Page 3: ...www rosemount tg com Service manual Second edition Copyright May 2013 Rosemount Tank Radar AB ...
Page 8: ...Rosemount TankRadar Rex Contents TOC 4 Service Manual 308012En Ed 2 May 2013 ...
Page 116: ...Rosemount Tank Radar Rex Chapter 4 Service 4 72 Service Manual 308012En Ed 2 May 2013 ...
Page 124: ...Rosemount Tank Radar Rex Chapter 5 Calibration 5 8 Service Manual 308012En Ed 2 May 2013 ...
Page 132: ...Rosemount Tank Radar Rex Chapter 6 Troubleshooting 6 8 Service Manual 308012En Ed 2 May 2013 ...
Page 134: ...Rosemount Tank Radar Rex Chapter 7 Spare Parts 7 2 Service Manual 308012En Ed 2 May 2013 ...
Page 146: ...Rosemount Tank Radar Rex Chapter 9 Technical Data 9 10 Service Manual 308012En Ed 2 May 2013 ...
Page 152: ...Rosemount Tank Radar Rex Index 1 6 Service Manual 308012En Ed 2 May 2013 ...
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