Service Operations; Abort Softkey; Interaction Between Analog Mode And Hart Mode - Fluke HART 744 User Manual

744
HART Mode Users Guide

Service Operations

The softkey provides access to Loop Test,
Service
Pressure Zero Trim (where applicable), Output Trim, and
Sensor Trim operations. For generic transmitters, only
Loop Test, Output Trim, and Pressure Zero Trim are
available. (See Table 1.) The trim (adjustment)
operations are described later in this manual.
Loop Test and Output Trim are not available if
the transmitter is in multidrop mode.

Abort Softkey

The softkey terminates the communication
Abort
operation underway, and returns control to the previous
screen. From the Active Device screen,
browser, in which you can view the list of supported
transmitters.
12
Note
calls up the
Abort
Interaction between Analog Mode and
HART Mode
Analog mode is normal calibrator operation, as described
in the 744 Users Manual . HART mode is activated when
you press the r (HART) key. This action starts
communication over the HART interface.
You can switch between HART and analog modes easily
by pressing r (or pressing M to go to analog mode
from HART mode), gaining the benefit of having the
transmitter automatically,set up analog mode for
appropriate measure and source functions, if desired.
For supported transmitters, the transition to analog mode
goes to the MEASURE/SOURCE screen, which provides
an easy way to proceed with an "as found" calibration.
For generic transmitters, the transition to analog mode
involves choosing the MEASURE or SOURCE screen,
from which you select the appropriate function.
For supported or generic transmitters, when you press
r to return to HART mode, the Active Device screen is
displayed. The HART serial communication connection
remains active as you switch between HART and analog
modes.