Siemens simatic hmi op7 Equipment Manual page 100

Assignments of
function keys and
soft keys
Password level
assignment
Special feature
with function keys
Special feature
with soft keys
11-2
You can assign the following functions to function keys and soft keys:
branch to message level,
select screen,
initiate a print job,
display directory,
modify parameters in online mode.
A password level may be assigned to a function key or a soft key. This means
that you can make functions, such as "Modify parameters in online mode",
available only to authorized persons.
If a function can be called in a given situation by means of a specific func-
tion key, the LED assigned to the function key can be turned on by the PLC.
in this manner.
OP7 Function keys K1 to K4 are all provided with a green LED.
OP17 Function keys K1 to K16 are all provided with a two-color LED
(red/green).
Convenient operator prompting can be implemented by means of the option
of activating the LEDs on function keys (refer to Chapter 13).
A bit can be configured in a tag for every soft key. This insures that a bit is
set in the PLC when a soft key is pressed. In this instance, the OP always
transfers the whole tag to the PLC instead of the individual bits and over-
writes the information it contains.
When the key is released or upon a change of display which modifies soft-
key assignment, the bit is reset.
Equipment Manual OP7, OP17
Release 04/99