Siemens PC 670 - Manual (Page 189)

Glossary-1 Panel PC 670 Computing Unit, Equipment Manual
Glossary
A
APM
Advanced Power Management.
Application
An application is a program directly linked to the MS-DOS or Windows operating
system. Applications on SIMATIC PCs are, for example, the visualization packages
SIMATIC ProTool/Pro, SIMATIC WinCC and others.
Automation system (AS)
A controller in the SIMATIC S7 series (for example, SIMATIC S7-200/300/400).
C
Cache
Buffer between working memory and central processing unit.
COM1 port
Serial V.24/modem port, 25-pin, sub-D connectors, sockets. The port is suitable for
asynchronous data transmission. It can also be used to connect printers having a
serial interface.
COM2 port
Serial V.24 port, 9-pin, sub-D connectors, pins. Preferred for connecting a mouse
of other external devices (for example, a printer).
Configuration file
Contains data which define the appearance of a configuration following a complete
restart. These files are e.g. register files.