Siemens PANEL PC 877 operating instructions Bios setup, Array Meaning

		Detailed descriptions
		17.6 BIOS setup
Array	Meaning
Type	The parameters which you can select here are usually saved on the respective IDE
	drive. The 'Auto' setting in the 'Type' field means that these values are automatically
	read from the drive and written to memory (Auto detect).
	If Type is selected for a drive that cannot be detected, a time-out is triggered within
	approximately 1 minute and the entries remain unchanged. You should always check
	that the interfaces for which you select 'Auto' are in fact connected to drives.
	Select “User” if you want to define the hard disk drive. You also need to configure the
	other options, for example, Cylinder, Heads, Sectors/Track, or other properties in
	accordance with the hard disk drive.
	Select "None" if you have not connected a disk drive. This setting reduces the
	system waiting time.
Multi Sector-	The number of sectors which are transmitted per interrupt are transferred in the
Transfer	option “Multi-Sector Transfers.” The value depends on the drive and should be set
	only to "Auto" in the "Type" field.
	Disabled
	2, 4, 8, 16 sectors
LBA Mode	“Enabled” in the option “LBA Mode Control” (enabled, disabled) means that hard disk
Control	capacities greater than 528 MB are supported. The value depends on the drive and
	should be set only to "Auto" in the "Type" field.
32-bit I/O	The type of access to the drive is defined in the 32-bit I/O field
	Disabled	16-bit access
	Enabled	32-bit accesses (default)
Transfer	The settings in these fields define the interface data transfer rate. The value depends
Mode or Ultra	on the drive and should be set only to "Auto" in the "Type" field.
DMA Mode	You leave the submenu using the ESC key.

SIMATIC Panel PC 877	17-43
Operating instructions, Release 07/2006, A5E00877780-01