Siemens PC 670 MPI/DP port, Parallel port, PC card interface, PCI or PCI/ISA slot, Port, parallel

Glossary Release 04/02

MPI/DP port

(Multi-Point-Interface/Profibus-DP) for connecting an S7 programmable controller.

P

Parallel port

Information is transferred on a byte by byte basis through a parallel port. High data transfer rates are achieved as a result. SIMATIC PCs have one parallel port (LPT) for attaching a printer.

PC card interface

For connecting PC cards (types I/II/III).

PCI or PCI/ISA slot

(Peripheral Component Interconnect) for expansion boards.

PCMCIA

(Personal Computer Memory Card International Association). Association of computer manufacturers formed with the aim of defining an international standard for memory modules and PC expansion cards. Cooperates with JEIDA.

Port, parallel

Information is transferred on a byte by byte basis through a parallel port. High data transfer rates are achieved as a result. SIMATIC PCs have one parallel LPT1 port.

Port, serial

Data are transferred bit by bit through serial ports. They are used in instances where large distances have to be traversed with minimum cabling.

Printer interface

Parallel port, 25-pin, sub-D connectors, sockets. For attaching printers.

Programmable logic controller (PLC)

A controller in the SIMATIC S5 series (for example, AG S5-115U/135U).

R

RTC

Real time clock

Glossary-4 Panel PC 670 Computing Unit, Equipment Manual