Siemens OP15, Equipment Manual, Page: 44 / 177

5-2
Manual OP5, OP15
( ) J31069-D0840-U001-A2-7618
5.1 Screen Entries
Screens consist of entries. Irrespective of the configured number of lines,
precisely one entry is displayed per display page on the OP. Lines which may
have not been fully configured are displayed as blank lines.
An example of a screen entry is the two lines in the afore mentioned example
(figure 5-1)
Furnace 1 temperature: 80 5C
Furnace 2 temperature: 78 5C
.
A screen entry consists of the following components:
entry text
The static text contains explanations for the operator. It may also include
information on how the soft keys have been assigned.
fields for the
– output of date, time, PLC actual values,
– input of PLC variables which are immediately transferred to the PLC
after being entered,
– combined I/O of PLC variables.
soft keys
Different function calls for the different screens are assigned to the soft keys.
The configuration defines the intervals at which PLC values are updated, i.e.
read again from the PLC and displayed.
With large screens containing more than 159 actual values or setpoint-actual
values, ”partial screen updating” is automatically enabled. To enhance per-
formance, only those values are updated which are currently present on the
display. This may mean that an older value is briefly displayed when scrol-
ling through screen entries. Updating of the visible actual values is faster as a
result, however.
Output fields display actual values of the PLC in numerical or symbolic
form; input fields define variables in numerical or symbolic form. In input
fields, the flashing cursor is visible.
For I/O fields, you can configure up to 256 text elements which you can call
on the OP using a selection field and apply to the screen entry.
With inputs of numerical values, configured number formats and limit values
apply with respect to the number of places before and after the decimal point.
Displaying a
screen entry
Components of a
screen entry
Updating values in
screen entries
I/O fields
Screens