Siemens Simatic M7-400 Reference Manual page 465

Halt On ...
Here you can choose which error messages are displayed in an error window
during booting. Displaying an error window delays booting by approximately
2 seconds.
Keyboard State
Typematic Settings Enabled
If you activate this check box, the values "Typematic Rate" and "Typematic Delay"
are set by the BIOS.
Typematic Rate
This value is used to set the maximum keyboard rate in characters per second.
Typematic Delay
This value is used to set the delay time in milliseconds, after which characters are
transferred with the maximum keyboard rate.
Num Lock On
If you activate this check box, "Num Lock" becomes active after BIOS power up.
System Memory
If this check box is activated, only sample tests are made of the main memory at
power up so the test is especially fast.
OK Button
Activating this button returns to the Setup menu. Changes on the setup page are
retained.
CANCEL Button
Activating this button returns to the Setup menu. Deletes all changes you have
made on the setup page.
DEFAULT Button
When this button is activated, the default settings are entered in the setup page
again. The original settings are deleted.
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
CPUs for M7-400
11-37