Siemens Simatic S7-400 - Manual (Page 447)

CPUs for M7-400
11-19
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
11.4.2 BIOS Hot Keys
BIOS Hot Keys
After power up, the BIOS offers the user a range of functions under MS-DOS.
These functions are executed by pressing the following groups of keys
simultaneously:
Table 11-7 BIOS Hot Keys with German and English Key Assignments
English Key Assignments German Key Assignments Function
CTRL Alt DEL + + STRG Alt ENTF + +
Warm restart of the module
CTRL Alt HOME + + STRG Alt POS1 + +
Cold restart of the module
(power off/on with
initialization of all blocks)
↓ CTRL Alt + + STRG Alt + + ↓ IDE hard disk in standby
mode
CTRL Alt + + PGDN STRG Alt Bild + + ↓ Screen saver on (dark
screen)
CTRL Alt + + PGUP STRG Alt Bild + + ↑ Screen saver off
Note
These functions can be overlaid by other operating systems or user programs
such as Windows.