Siemens SIMATIC Field PG P4 Manual page 136

Glossary
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 for SIMATIC
S7. It offers simultaneous operation from one central station of several
programming devices, text displays, and operator panels. The stations on the MPI
can communicate with each other.
MS-DOS
The single Microsoft-Disk-Operating-System is one of the standard OS for PCs.
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
Operating System
Collective term for all functions 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, MS-DOS).
P
Parallel Interface
Information is transmitted byte for byte via a parallel interface (port). This means
that the transmission rate is very fast. The programming devices have one parallel
interface (LPT1).
Password
Unique sequence of characters that is entered for user identification. See Access
Protection.
Glossary-10
SIMATIC Field PG P4 Manual
A5E00180080-04