Glossary - Siemens SIMATIC IPC477E PRO Operating Instructions Manual

Glossary

AHCI mode
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.
APIC mode
Advanced peripheral interrupt controller. 24 interrupt lines are available.
Automation system
A programmable controller (PLC) of the SIMATIC S7 system consist of a central controller,
one or several CPUs, and various I/O modules.
Backup
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.
Baud
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.
Cache
High-speed access buffer for interim storage (buffering) of requested data.
CE marking
Communauté Européene The CE mark confirms compliance of the product with
corresponding EC Directives, for example, with the EMC Directive.
CFast card
CFast is a digital storage medium in card form without moving parts. A CFast card uses the
SATA protocol and its connectors are not compatible with a classic CompactFlash card.
SIMATIC IPC477E PRO
Operating Instructions, 08/2017, A5E39912462-AA
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