Siemens simatic hmi op7 Equipment Manual page 31

Key functions
Key
Shift
SHIFT
Delete
INS
DEL
Insert
INS
SHIFT
DEL
Display Help text
HELP
(Help)
Enter
ENTER
Acknowledge
ACK
Equipment Manual OP7, OP17
Release 04/99
The system keys of the OPs have the following functions:
Function
Enable the second function of dual-assignment keys –
for example, shift of numeric keys 1 to 6 for inserting
characters A to F or switching from DELETE mode to
INSERT mode.
The enabled SHIFT key is indicated by the SHIFT
LED. The second function of a dual-assignment key
can then be called.
The SHIFT LED is located on the right of the function
keys.
When entering values in a field with string format, the
character located at the current position of the cursor is
deleted. All subsequent characters are moved one posi-
tion to the left.
When entering values in a field with string format, a
space (blank) is inserted at the current position of the
cursor. All subsequent characters are moved one posi-
tion to the right.
If the HELP LED linked with this key comes on, you
can open a context-sensitive Help text specifically ab-
out the screen currently displayed (see chapter 3.3).
The HELP LED is located on the right of the
function keyboard.
Enter and terminate your input. This means that,
among other things, you also change from message
level to screen level.
Acknowledge alarm messages. The ACK LED
is on, when at least one unacknowledged alarm
message is present,
flashes, when only acknowledged alarm messages are
still queued.
The ACK-LED (icon
function keys.
Purpose
) is located on the right of the
3-3