Siemens SIMATIC PG 720, Руководство пользователя

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3
3-9
PG 720 Programming Device
C79000-G7076-C720-02
The largest block of keys on the keyboard is the alphanumeric keyboard with all
the keys for the letters of the alphabet, numerals and special characters. The
characters are arranged in basically the same way as on a normal typewriter.
However, there are a number of special keys which have special functions for
the PG 720.
The special keys in the alphanumeric keyboard have the following functions:
Table 3-3 Functions of the Special Keys
Key Function
Backspace Key
This key moves the cursor one space to the left and deletes the
character at this position.
Enter
Enter Key
(Return, Enter, Line Feed)
The return or enter key is used mainly to terminate a command
line in the operating system; that is, the command you have
typed in is executed when you press this key. For other uses of
this key, please refer to the User Manual of the relevant
application program.
Caps
Lock
CAPS LOCK Key
If you press this key, the middle LED at the top right-hand
corner of your keyboard lights up. All upper case characters
and other characters are output normally. If you want to type
lower case letters in this position, you must first press the shift
key.
If you are using an international keyboard, you cancel this
function by pressing the CAPS LOCK key again. The LED then
goes out.
If you have a German keyboard, you must press the shift
⇑
key
to cancel this function.
F9
NUM Key
With these keys F
n
+
⇓
NUM , the emulated numeric block is
switched from the alphanumeric keyboard to numeric keys. The
LED display lights up. Press this key again to return to cursor
control.
Tabulator Key
This moves the cursor depending on the selected tabulator
positions.
“ Fn ” Special Key (combination key)
In conjunction with a second key (key combination), you
activate other key codes for special applications with this key
(see Figure 3-9 Function Keys). This key is also used to
emulate the numeric block (Figure 3-8 Numeric Block).
n
Alphanumeric
Keyboard
Special Keys
Getting to Know the PG 720