ABB CL Series, Руководство по применению

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Screen overview
299
1SVC 440 795 M1100
Value entry
With this screen element you can enter numerical set values
during operation and thus make interventions in the process.
This is done by entering the signal state via the associated
set variable. The display system stores the entered value
internally. The program processes the value and displays it
until it is changed by the operator or the program. Without
an operator entry this screen element functions like the
numerical value screen element and therefore displays the
value of the associated set variable.
At the start of the entry on the display system the entry field
retains the last variable value calculated. Pressing
OK
activates Selection mode in which you can use the cursor
buttons to move between the value entry elements of a
screen. The elements are activated from the back to the
front. The order is defined by how the elements are
positioned and can be modified in the menu bar. Pressing
OK once more activates Entry mode.
Value and scaling range
The value range determines the range of values to be
displayed. The display system indicates an underflow if the
values are below this range and an overflow if they are
above it.
The scaling range enables the value range to be scaled. To
do this, the lower value of the scaling range is assigned to
the lower value of the value range and the upper value of the
scaling range is assigned to the upper value of the value
range. If no scaling range is defined, the display system
displays the value range.
Examples:
If you wish to display the value range (0 to 255) for example
from a counter as a percentage (0 to 100 %), then enter 0 as
the minimum value and 255 as the maximum value in the
Value range area. Enter “%” as a unit of measure. Activate
the Scaling range area and enter 0 as the minimum value
and 100 as the maximum value.