Glossary - Siemens simatic ET 200SP User Manual

Glossary

Cold restart
A startup procedure commencing when the CPU is switched on. Upon a cold restart, the
system typically performs some basic hardware checks and then loads the operating system
from the hard disk into the work memory.
Controller
Integrated hardware and software controlling the operation of a specific internal or I/O device
(e.g. keyboard controller).
Device configuration
The device configuration of a PC/programming device includes information on the features
and options of the PC/programming device such as memory configuration, drive types,
monitor, network address etc. The data is stored in a configuration file and is used by the
operating system to load the corresponding device drivers or assign device parameters.
Drivers
Program sections of the operating system. They convert data from the user programs to the
specific formats required by the I/O devices (e.g. hard disks, monitors, printers).
Enhanced Write Filter (EWF)
Configurable write filter making it possible to boot Windows Embedded Standard from write-
protected media (e.g. from CD-ROM), to write-protect individual partitions and to adapt file
system performance to the user's requirements (e.g. when using CFast cards).
Ethernet
Local network (bus structure) for text and data communication with a data transmission rate
of 10/100/1000 Mbps.
File-Based Write Filter (FBWF)
Configurable write filter making it possible to write-protect individual files.
Image
An image is a copy of hard-disk partitions, for example, which is stored as backup in a file so
that it can be restored if necessary.
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CPU 1515SP PC
Manual, 12/2014, A5E32701806-AA