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Rosemount Tank Radar REX
Chapter 11 Electrical Installation of the
11-14
Installation Manual
308014EN, Edition 4
May 2013
11.5.5 TRL/2 Bus
The transmitter is connected to a workstation via a a Field
Communication Unit (FCU) and a Field Bus Modem (FBM). The FBM
converts the USB (or RS232) signal to a TRL/2 Modbus signal.
Each TRL/2 Bus can connect up to 8 units.
Figure 11-6. Connection of the TRL/2 Bus
Connect the TRL/2 Bus with a single pair of shielded twisted wires. The
maximum length is 4 km. Use cables with an area of at least 0.5 mm
2
(AWG 20 or similar).
Once connected to the TRL/2 Bus you can configure the transmitter as
well as monitor tank data by using the TankMaster WinSetup/WinOpi
software. The TankMaster software provides a modern user-friendly
interface including functions for monitoring tank data such as level,
temperature and inventory data.
X11_TRL2Bus .eps
FCU
FBM
TRL/2 Bus
TRL/2 Bus