Meriam MFT 4010 Modular Calibrator_HART Communicator - Manual (Page 8)

3
Soft Keys
Soft Keys (unlabled)
The four white keys located below the display are the Soft Keys. The specific functions
of these keys change depending on the operating mode of the MFT. Current defintions
are displayed at the bottom of the LCD display.
Alphanumeric / Symbol Entry
For MFT applications requiring alpha, numeric, and symbol entry (examples: tagging or messaging), the MFT
uses three display grids, the FUNCTION key to change from one grid to another, and four soft keys used for
cursor movement and selection of characters and text. MFT and HART communication functions that require
alpha and numeric entry automatically call up the appropriate grid and make the other grids accessible using
the FUNCTION key. Row and Column soft keys are used to move the flashing cursor through the displayed
grid. The Select soft key enters the indicated character in the text line and the Done soft key accepts the
displayed text line and returns the MFT to service.
Character grids are provided for numeric, alpha, and symbol characters to permit complete editing of text fields.
Each grid includes back space (←), forward space (→), delete (del) and space (spc) operators to accommodate
text editing needs.
User Interface
The displays shown below illustrate the alphanumeric entry grids and soft key functions. Pressing the MFT’s
FUNCTION key changes the display from one grid to another allowing text messages to be developed using all
three grids when needed.
When using any character grid, pressing Row or Col keys will move the flashing cursor one character across or
down the grid. Pressing and holding the Row or Col key causes the cursor to advance down or across,
respectively, at a regular rate. Releasing the key when the cursor is under the desired character stops the
cursor movement and allows the selection of the character using the Select key. Press the Done soft key
when the character string is completed to enter the string and continue MFT operations.
Numeric Entry: Many HART functions require only numeric entry. For these functions the MFT uses an
Increment and Decrement scheme to change the input field one place at a time. Press the Inc / Dec soft keys
to move through a scroll of -, . , 0, 1…9, and space until the desired value is displayed. Press the Next soft key
to enter that value and advance to the next place in the input field. Repeat as necessary. Press the Done soft
key to end the numeric entry session.
HART
Tag No PT-3456
@ [ \ ] ^ “
” # $ % ( )
’
& * + − . / :
; < = > ? , !
−−> <−− del spc
PT−3456 OUTPUT < 50% @_
Row Col Select Done
HART
Tag No PT-3456
A B C D E F G
H I J K L M N
O P Q R S T U
V W X Y Z − .
−−> <−− del spc
PT−_
Row Col Select Done HART
Tag No PT-3456
1 2 3
4 5 6
7 8 9
. 0 + −
−−> <−− del spc
PT−3456_
Row Col Select Done
Alpha entry grid Numeric entry grid Symbol grid