Siemens SIMATIC IL43 Operating Instructions Manual page 100

Glossary
Ethernet
Local network (bus structure) for text and data communication with a transfer rate of 10
Mbps.
Formatting
Basic partitioning of memory space on a magnetic data carrier into track and segments.
Formatting deletes all data on a data carrier. All data carriers must be formatted prior to their
first use.
Gender changer
Using the gender changer (25-pin / 25-pin), the COM1/V24/AG port of the SIMATIC PC
family can be converted to the usual 25-pin male connector.
Hard disks
Hard disks represent a form of magnetic disk storage medium (Winchester drives, hard
disks) with integrated magnetic disks.
Hub
A term in network technology. In a network, a device joining communication lines at a central
location, providing a common connection to all devices on the network.
Image
This is refers to the image, for example, of hard disk partitions saved to a file in order to
restore them when necessary.
Interface
see Interface
Interface, MPI
MPI is the programming interface of SIMATIC S7/M7. Allows central access to
programmable modules, text-based displays and OPs. The MPI nodes can
intercommunicate.
Interface, parallel
Information is transmitted byte for byte via a parallel interface (port). This means that the
transmission rate is very fast. The PGs/PCs have one parallel interface (LPT1).
Interfaces
The connection between individual hardware elements such as PLCs, programming devices,
printers or monitors via physical connections (cables).
Glossary-4
Operating Instructions, Edition 09/2005, A5E00432875-01
SIMATIC Rack PC IL 43