Emerson Rosemount 644 HART, Reference Manual

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Reference Manual
00809-0100-4728, Rev MB
Local Operator Interface (LOI)
July 2016
Local Operator Interface (LOI)
121
Appendix D Local Operator Interface (LOI)
D.1 Number entry
Floating point numbers can be entered with the LOI. All eight number locations on the top line
can be used for number entry. Refer to
Table 2-2 on page 13 for LOI button operation. Below is a
floating-point number entry example for changing a value of “-0000022” to “000011.2”
Table D-1. LOI Number Entry
Step Instruction
Current position
(indicated by underline)
1 When the number entry begins, the left most position is the
selected position. In this example, the negative symbol, “-“, will
be flashing on the screen. -0000022
2 Press the scroll button until the “0” is blinking on the screen in
the selected position. 00000022
3 Press the enter button to select the “0” as an entry. The second
digit from the left will be blinking. 00000022
4 Press the enter button to select “0” for second digit. The third
digit from the left will be blinking. 00000022
5 Press the enter button to select “0” for the third digit. The fourth
digit from the left will now be blinking. 00000022
6 Press the enter button to select “0” for the fourth digit. The fifth
digit from the left will now be blinking. 00000022
7 Press scroll to navigate through the numbers until the “1” is on
the screen. 00001022
8 Press the enter button to select the “1” for the fifth digit. The
sixth digit from the left will now be blinking. 00001022
9 Press scroll to navigate through the numbers until the “1”, is on
the screen. 00001122
10 Press the enter button to select the “1” for the sixth digit. The
seventh digit from the left will now be blinking. 00001122
11 Press scroll to navigate through the numbers until the decimal,
“.”, is on the screen. 000011.2
12 Press the enter button to select the decimal, “.”, for the seventh
digit. After pressing enter, all digits to the right of the decimal
will now be zero. The eighth digit from the left will now be
blinking. 000011.0
13 Press the scroll button to navigate through the numbers until the
"2", is on the screen. 000011.2
14 Press the enter button to select the “2” for the eighth digit. The
number entry will be complete and a “SAVE” screen will be
shown. 000011.2