Technical data

Glossary-1
SIMATIC Panel PC 670 Computing Unit Equipment Manual
Edition 12/01
Glossary
A
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).
B
Base memory
Base memory is a part of main memory. It is 640 KB on all SIMATIC PCs. This
size is set on the SETUP menu at the Base Memory option and is not modified
even if memory is upgraded.
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).