Siemens SIMATIC PANEL PC 877 - Manual (Page 272)

Glossary
SIMATIC Panel PC 877
Glossary-2
Operating instructions, Release 07/2006, A5E00877780-01
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).