User guide

I-E67-84-1B February,2002 4-3
This display region is supported by the
engineering unit region. These regions are
active in all modes of operation; however, in
some programming states, the process variable
region will be used for data entry and the
engineering unit region will reflect the data
unit.
The secondary variable is displayed in the
six-character, fourteen segment region. This
display region is used for displaying
secondary information and fault information in
the Measure Mode of Operation and textual
prompting in all other modes of operation.
Due to the limited number of characters for
this display region, much of the prompting
takes the form of text abbreviations (see
Appendix B for a list of abbreviations.) This
region is active in all modes of operation.
The Smart Key assignments are grouped into
four sets of icons, each group directly
positioned above one of the four keys. These
icons are textual representations of the
function for the associated key. Only one
assignment will be energized per Smart Key at
any given time.
Multi-Function Smart Keys
A five-button, tactile keypad is located on
the front panel of the instrument. Four of
the gray buttons are embossed to easily show
their location. A fifth, hidden button
located at the top of the NT in the text
ADVANTAGE has been included to provide access
to functions that are infrequently used.
The four embossed keys are called Smart Keys
since their functions are dependent on the
mode and/or state of the instrument. Since
these four keys do not have a preassigned
function, icons are energized over the key to
indicate its function. If a Smart Key does
not have an icon energized above its location,
this Smart Key does not have a function and
will not initiate an action when pressed.
Using this Smart Key method, a smaller number
of keys can be used without complicating
instrument functionality.
Table 4-1. Smart Key Definition of Operation