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Configuring the LWT300 with a computer
LWT300 instruments can also be configured with a computer. All configuration options explained
previously can be performed via a software communication tool and a HART driver (see also “Configuring
HART communication” on page 71). The following provides an overview of the configuration setup.
NOTICE
For instrument configuration with software tools running on a PC, you must disconnect
the LWT from the flow computer/RTU
—
Figure 43
LWT instrument Modbus connection to a PC or laptop via USB/RS485 converter
Description
1
Software tool
Driver and device management tool for configuration and parameterization of intelligent field devices.
2
USB/RS 485 converter (
not provided by ABB
)
At end of Modbus interface, with 120 Ω resistance between ‘(A) Tx/Rx+’/‘(B) Tx/Rx−’
3
RS 485 cable (
not provided by ABB
)
Half-duplex wiring with (A) Tx/Rx+, (B) Tx/Rx− and GND
•
Connect ‘Tx+’ and “Rx+’
•
Connect ‘TX−’ and ‘Rx−’
LWT guided wave radar level transmitters can be configured with the aid of various software
communication tools such as ABB Field Information Manager, a software configurator that can be
downloaded at www.abb.com/measurement.
With the graphical user interface all configuration possibilities are available. The procedure for program
installation is described in the appropriate installation manual delivered with the software.
The transmitter can be configured, read out and tested via the program. Each configuration step is
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