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Table 3-5
LED Displays
The LED displays for the keys NUM LOCK and SCROLL LOCK are
located below the function keys F9 to F12 and display the current
status of the keys.
When the programming device is powered up, the LED displays for the
NUM LOCK, CAPS LOCK, and SCROLL LOCK keys light up briefly twice.
The keyboard is then ready for operation.
PG 720 PII Programming Device
C79000-G7076-C756-02
Functions of the Special Keys
"Fn" Special Key (combination key)
n
In conjunction with a second key (key combination), you
activate other key codes for special applications with this key.
This key is also used to emulate the numeric keypad (Figure
3-8 Numeric Keypad).
CTRL Key (combination key)
This key is only used in combination with other keys. For
Ctrl
example, you press CTRL + ALT + Delete to reset and restart
the operating system. For other uses of this key, please refer to
the user manual of the relevant user program.
ALT Key (combination key)
This key is only used in combination with other keys. For
Alt
example, you can enter the hexadecimal value of an ASCII
character using this key and the numeric keypad for example,
F
+ ALT + 123 corresponds to "{".
n
ALT
Key (combination key)
Gr
You can use this key together with the other combination keys
Alt
Gr
to generate other key codes. For example, you can generate
the "\" character on the German keyboard by typing ALT
PRINT (combination key)
Print
SysRq
Using the Print key, you can output the current screen display
to a printer (depending on the software used).
PAUSE (combination key)
Pause
The Pause key interrupts program execution in the majority of
Break
applications.
NUM LOCK
CAPS LOCK
SCROLL LOCK
Getting to Know the PG 720
+ ß.
Gr
3-11
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