SIMATIC IPC677D
Operating Instructions, 09/2014, A5E32995420-AC
183
AHCI is a standardized method to address the SATA controller. AHCI describes a structure
in the RAM, which contains a general area for control and status, as well as a command list.
Advanced peripheral interrupt controller. 24 interrupt lines are available.
A programmable controller (PLC) of the SIMATIC S7 system consist of a central controller,
one or several CPUs, and various I/O modules.
Duplicate of a program, data medium or database, used either for archiving purposes or for
the protection of vital and non-replaceable data against loss when the working copy is
corrupted. Certain applications automatically generate backup copies of data files, and
manage both the current and the previous versions on the hard disk.
Physical unit for the step speed in signal transmission. Defines the number of transferred
signal states per second. With only two states, one baud is equivalent to a transmission rate
of 1 bps.
A boot disk is a disk with a "Boot" sector. This can be used to load the operating system from
the disk.
High-speed access buffer for interim storage (buffering) of requested data.
ommunauté
uropéene The CE mark confirms compliance of the product with
corresponding EC Directives, for example, with the EMC Directive.
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