Siemens SIMATIC Rack PC 840 V2 Operating Instructions Manual page 164

Glossary
Cache
High-speed access buffer for interim storage (buffering) of requested data.
CE marking
Communauté Européene The CE symbol confirms the conformance of the product with all
applicable EC directives, e.g. the EMC directive.
Chipset
Located on the motherboard, connects the processor with the RAM, the graphic controller,
the PCI bus, and the external interfaces.
Cold start
A start sequence, starting when the computer is switched on. The system usually performs
some basic hardware checks within the cold start sequence, and then loads the operating
system from the hard disk to work memory -> boot
COM interface
The COM interface is a serial V.24 interface. The interface is suitable for asynchronous data
transfer.
Configuration files
These are files containing data which define the configuration after restart. Examples of such
files are CONFIG.SYS, AUTOEXEC.BAT and the registry files .
Configuration software
The configuration software updates the device configuration when new modules are installed
. This is done either by copying the configuration files supplied with the module or by manual
configuration using the configuration utility.
Controller
Integrated hardware and software controllers that control the functions of certain internal or
peripheral devices (for example, the keyboard controller).
Device configuration
The configuration of a PC or programming device contains information on hardware and
device options, such as memory configuration, drive types, monitor, network address, etc.
The data are stored in a configuration file and enable the operating system to load the
correct device drivers and configure the correct device parameters. . If changes are made to
the hardware configuration, the user can change entries in the configuration file using the
SETUP program. .
Glossary-2
Operating Instructions, Edition 05/2006, A5E00248055-04
SIMATIC Rack PC 840 V2