Siemens simatic hmi op27 Equipment Manual page 34

Function keys for A "function key for global function assignment" always triggers the same
global function action on the OP or PLC, regardless of the screen currently open (global
assignment significance on OP). These actions can be:
S
S
S
S
The following keys can be assigned globally:
S
S
Function keys for
A "function key for local function assignment", referred to as a "soft key",
local function
means that the respective function keys have a significance only related to a
assignment (soft
specific screen (local).
keys)
The function of a soft key may differ from screen to screen. The function of a
soft key is displayed in the corresponding icon on the border of the current
screen.
The following keys can be assigned locally:
S
S
System keys
The system keys are used to enter input on the OP. The OP system keys have
the following functions:
Key
SHIFT
A–Z
Switch/ Change
A–Z
A–Z
Window
OP27, OP37 Equipment Manual
Release 05/99
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opening a screen
displaying current alarm messages
initiating a screen printout (Print Screen)
displaying the time window.
on the OP27 –> to
K1 K10
on the OP37 –> to
K1 K16
on the OP27 –> to
F1 F14
on the OP37 –> to
F1 F20
Function
SHIFT is used to switch the input keys from numeric to alphanu-
meric assignment.
The key has two LEDs for indicating its current status:
S
If neither of the LEDs is on, numeric assignment of the input
keys is active. Pressing the key once switches the input keys to
alphanumeric assignment.
S
When the left or right LED is on, the left or right alphanumeric
assignment of the input keys is active. The alphanumeric
assignment of the input keys changes from left to right and
back again every time the key is pressed.
This key:
S
changes the active window.
S
switches back from alphanumeric to numeric assignment of the
input keys.
and to (Figure 3-2),
F1 F14
and to (Figure 3-3).
F1 F20
(Figure 3-2),
(Figure 3-3).
Purpose
General Operation
3-5