11-5
Operator Panel OP3
Edition 11/99
If the most significant bit has been set in the data word (=1), the screen
number refers to a special screen. If the most significant bit has not been set
(=0), the screen is a user-defined screen.
The screen numbers of the special screens are listed in the table below. An
offset of 128 (most significant bit = 1) has to be added to these screen
numbers.
Screen No. Special Screen
0 Screen directory
25 Status Variable
26 Force Variable
30 Language selection
31 Changing the operating mode
35 Set time/date
36 MPI address/baud rate
55 Password login
56 Password edit
The procedure for selection of screen 5 by the PLC is described below:
1. A screen is open on the the OP3.
1st word
Screen No. Entry No.
xx
2nd word
xx
1st word
Screen No. Entry No.
xx
2nd word
0x
Screen No. Entry No.
xx
5x
Screen No. Entry No.
5
5
1st word
2nd word
1st word
2nd word
2. Before the application program enters
the value 5 in the second word of the
screen number area, it has to set the
screen number briefly to 0 ...
... and enter the value 5 following a pol-
ling cycle at the earliest (1 second).
3. The OP3 detects the change from 0 to
5 and opens screen 5.
Special Screens
Screen selection
via the controller
Process-Dependent Operator Guidance
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