3-5
OP27, OP37 Equipment Manual
Release 05/99
A “function key for global function assignment” always triggers the same
action on the OP or PLC, regardless of the screen currently open (global
significance on OP). These actions can be:
opening a screen
displaying current alarm messages
initiating a screen printout (Print Screen)
displaying the time window.
The following keys can be assigned globally:
on the OP27
–>
K1
to
K10
and
F1
to
F14
(Figure 3-2),
on the OP37 –>
K1
to
K16
and
F1
to
F20
(Figure 3-3).
A “function key for local function assignment”, referred to as a “soft key”,
means that the respective function keys have a significance only related to a
specific screen (local).
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:
on the OP27
–>
F1
to
F14
(Figure 3-2),
on the OP37 –>
F1
to
F20
(Figure 3-3).
The system keys are used to enter input on the OP. The OP system keys have
the following functions:
Key
Function
Purpose
A–Z
SHIFT
SHIFT is used to switch the input keys from numeric to alphanu-
meric assignment.
The key has two LEDs for indicating its current status:
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.
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.
A–Z
A–Z
Switch/ Change
Window
This key:
changes the active window.
switches back from alphanumeric to numeric assignment of the
input keys.
Function keys for
global function
assignment
Function keys for
local function
assignment (soft
keys)
System keys
General Operation
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