Siemens SIMATIC Box PC 620 Manual page 197

Mouse Pointer
The mouse pointer is moved across the worktop (screen) by means of the mouse.
The mouse pointer selects, for example, objects which are to be processed.
MPI/DP
The multipoint interface (MPI) is the programming device interface of SIMATIC S7.
It enables access to programmable modules, text displays, and operator panels
from a central point. The stations on the MPI can communicate with each other.
MS-DOS
(Microsoft Disk Operating System) is one of the standard operating systems for
personal computers. It is a single-user system.
Multipoint Interface
The multipoint interface (MPI) is the programming device interface of SIMATIC
S7/M7. It enables access to programmable modules, text displays, and operator
panels from a central point. The stations on the MPI can communicate with each
other.
N
Network
Link between programming devices and programmable controllers by means of
interface modules, physical cables, and the corresponding software to allow data
exchange between the devices.
O
OP
Operator Panels serve as a quick way to control machines. Expected values can
be set, machine data called up, or plants created.
Operating System
Collective term for all programs which, in conjunction with the hardware, control
and monitor execution of the user programs, the distribution of resources among
the individual user programs, and the maintenance of the operating mode (for
example, Windows 98).
SIMATIC Box PC 620 Manual
C79000-G7076-C639-04
Glossary
Glossary-9