Inputting Device Information - Emerson Rosemount 644 Reference Manual

Configuration
March 2021
Configure the LCD display using LOI
Reference
Figure 2-19: Configuring the LCD Display using LOI
VIEW CONFIG
SENSOR CONFIG
UNITS
RERANGE
LOOP TEST
DISPLAY
EXTENDED MENU
EXIT MENU
*Available only if option code (S) or (D) is ordered.
2.9

Inputting device information

Access the transmitter information variables online 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.
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
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
40
Figure 2-19 to find the LCD display value configuration path on the LOI.
SENSOR 1
SENSOR 2*
ANALOG
PV
AVG*
ST
1 GOOD*
DIFF*
% RANGE
TERM
MNMAX1*
MNMAX2*
MNMAX3*
MNMAX4*
BACK TO MENU
EXIT MENU
®
-based communicator establishes contact with the
Reference Manual
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