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Reference Manual
00809-0100-4808, Rev CA
June 2008
Rosemount 3051N
A-10
NOTE
Online communication with the transmitter automatically loads the current
transmitter data to the HART Communicator. Changes in on-line data are
made active by pressing SEND (F2). The transfer function is used only for
off-line data retrieval and sending.
• Frequency Device–The Frequency Device option displays the
frequency output and corresponding pressure output of
current-to-pressure transmitters. This is not applicable to the
Rosemount 3051N.
• Utility–The Utility option provides access to the contrast control for the
HART Communicator LCD screen and to the autopoll setting used in
multidrop applications. Note that although the Rosemount 3051N has
multi-drop capability, which is a HART protocol feature, the Rosemount
3051N is not qualified/dedicated for use in multi-drop mode.
Once selecting a MAIN menu option, the HART Communicator provides the
information you need to complete the operation. If further details are required,
consult the HART Communicator manual.
Online Menu The ONLINE MENU can be selected from the MAIN menu as outlined above,
or it may appear automatically if the HART Communicator is connected to an
active loop and can detect an operating transmitter.
NOTE
The MAIN menu can be accessed from the ONLINE MENU. Press the left
arrow action key to deactivate the on-line communication with the transmitter
and to activate the MAIN menu options.
When configuration variables are reset in the on-line mode, the new settings
are not activated until the data is sent to the transmitter. Press SEND (F2)
when it is activated to update the process variables of the transmitter.
On-line mode is used for direct evaluation of a particular meter,
re-configuration, changing parameters, maintenance, and other functions.