The process of displayed result calculation is described in details in
DISPLAY VALUES CALCULATION
paragraph.
“AddP”
,
“dELP”
and
“EdtP”
options are available only if the user defined characteristic is used (it
means when parameter
“CHAr”
=
“USEr”
).
• User can not enter two points with the same value of
“X”
coordinate. If user trays to do it,
“Err”
warning is displayed. To modify any defined point use
“EdtP”
option.
• To distinguish
“X”
and
“Y”
coordinates, if
“X”
coordinate is displayed an additional decimal point on
utmost right position is displayed.
• If user defined characteristic is selected, and if number of defined points is lower than 2 then warning
“Errc”
is displayed in measurement mode.
If user defined characteristic is selected (parameter
“CHAr”
=
“USEr”
) the parameters
“Lo C”
and
“Hi
C”
are not available for modification, due to their values are calculated from defined characteristic.
“FiLt”
- this parameter sets filtration rate. It can be set to values from 0 (no filtration )
to 5 (strongest filtration – time window about 3 sec).
“Pnt”
- decimal point position. It can be set to one of :
“0”
,
“0.0”
,
“0.00”
,
“0.000”
Decimal point position is changed by
[^]
,
[v]
buttons.
“dELP”
- this option allows user to delete any of the points of the user defined characteristic. After selection current
number of points of the user defined characteristic is displayed for about approx. 1.5 sec. After that device
waits for selection of point being deleted (by
[^]
,
[v]
buttons). The short pressing of
[ENTER]
button causes by
switching between X and Y value of the displayed point. The long press (press and hold at least 2 sec) of
[ENTER]
button causes by displaying
“dEL?”
ask. If
[ENTER]
button is pressed again, current point is deleted and new
updated number of points of the user defined characteristic is displayed.
“Pnt”
- this option allows user to modify of particular point of the user defined characteristic. After selection current
number of points of the user defined characteristic is displayed for about approx. 1.5 sec. After that device waits
for selection of point being edited (by
[^]
,
[v]
buttons). The short pressing of
[ENTER]
button causes by switching
between
X
and
Y
value of the displayed point. The long press (press and hold at least 2 sec) of
[ENTER]
button
causes by entering to edit the selected coordinate of the point. Modification of the coordinates is done
accordingly to numerical parameters edition.
“AddP”
- this menu allow user to add single point to the user defined characteristic. After selection of this option device
waits for
“X”
and
“Y”
coordinates of new point. Modification of the coordinates is done accordingly to numerical
parameters edition. Coordinate
“X”
defines the percentage ratio of input current to selected current range.
The
“X”
range: -99,9 ÷ 199,9. Coordinate
“Y”
defines displayed value for particular
“X”
value. The
“Y”
value can be
changed in range: -999 ÷ 9999, decimal point position depend on
“Pnt”
parameter (menu
“inPt”
).
“Lo C”
“Hi C”
These parameters describe the values displayed for minimum and maximum input current.
“Lo C”
parameter
defines the value displayed when input current is equal 4 mA, and
“Hi C”
parameter defines the value displayed
for 20 mA of input current. Available range for these parameters: -999 ÷ 9999. Negative values can be set by
entering
'-'
sign on the first position (by use of
[^]
,
[v]
buttons).
Loop Powered Display
250 SERIES
14
“Lo r”, “Hi r”
- these parameters define the expansion of nominal range in percent. They determine the permissible range
of input signal (figure 7.1).
The permissible range allow user to exceed the nominal range of input signal. If input value is contained in the
permissible range a proper result is displayed. If input signal exceeds this range (defined by
“Lo r”
and
“Hi r”
),
“-Lo-”
or
“-Hi-”
warning is displayed depend on input signal value.