Siemens PC 670 用户手册

Glossary-4

Panel PC 670 Computing Unit, Equipment Manual

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

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.

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

(Peripheral Component Interconnect) for expansion boards.

(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.

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.

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

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

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

Real time clock