Emerson Rosemount 644 with HART Protocol, Reference Manual

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Reference Manual
00809-0200-4728, Rev SA
Configuration
July 2018
Configuration
Figure 2-17. Configuring the LCD Display using LOI
* Available only if option code (S) or (D) is ordered.
2.9 Inputting device information
Access the transmitter information variables on-line using the Field Communicator or other suitable
communications device. The following is a list of transmitter information variables, including device
identifiers, factory-set configuration variables, and other information.
2.9.1 Tag, date, descriptor and message
The Tag , Date , Descriptor and Message are parameters that provide transmitter identification in large
installations. See below for a description and a process to enter these pieces of configurable device
information:
The Tag variable is the easiest way to identify and distinguish between different transmitters in
multi-transmitter environments. It is used to label transmitters electronically according to the
requirements of the application. The defined Tag is automatically displayed when a HART-based
communicator establishes contact with the transmitter at power-up. The Tag is up to eight characters
and the Long Tag (a parameter introduced with the HART 6 and 7 protocol) was extended to 32
characters long. Neither parameter has any impact on the primary variable readings of the transmitter, it
is only for information.
The Date is a user-defined variable that provides a place to save the date of the last revision of
configuration information. It has no impact on the operation of the transmitter or the HART-based
communicator.
The Descriptor variable provides a longer user-defined electronic label to assist with more specific
transmitter identification than is available with tag. The descriptor may be up to 16 characters long and
has no impact on the operation of the transmitter or the HART-based communicator.
The Message variable provides the most specific user-defined means for identifying individual
transmitters in multi-transmitter environments. It allows for 32 characters of information and is stored
with the other configuration data. The message variable has no impact on the operation of the
transmitter or the HART-based communicator.
SENSOR 1
SENSOR 2*
ANALOG
PV
AVG*
1
ST
GOOD*
DIFF*
% RANGE
TERM
MNMAX1*
MNMAX2*
MNMAX3*
MNMAX4*
BACK TO MENU
EXIT MENU
VIEW CONFIG
SENSOR CONFIG
UNITS
RERANGE
LOOP TEST
DISPLAY DISPLAY
EXTENDED MENU
EXIT MENU