Glossary
SIMATIC IPC677D
Operating Instructions, 09/2014, A5E32995420-AC
187
Intel VT
The Intel Virtualization Technology (IVT) is the implementation of a secure closed
environment for applications. Special (visualization) software an a VT-capable processor is
required for its use.
Interface
●
Physical interconnection (cable) of hardware elements such as PLCs, PCs, programming
devices, printers or monitors.
●
Interface for interactive software applications.
LAN
Local Area Network: LAN is a local network that consists of a group of computers and other
devices that are distributed across a relatively restricted range and are linked with
communication cables. The devices connected to a LAN are called nodes. The purpose of
networks is the mutual use of files, printers or other resources.
Legacy Boot Device
Conventional drives can be used as USB devices.
License key
The license key represents the electronic license stamp of a license. Siemens provides the
license keys for protected software.
License key disk
The license key disk contains the authorizations or license keys required to enable protected
SIMATIC software.
Low-voltage directive
EC Product Safety Directive relating to the safety of products which are operated on low
voltage (50 V AC to 1000 V AC, 70 V DC to 1500 V DC) and not specified in other directives.
Compliance is confirmed by the CE symbol and the EC certificate of conformity.
Module
Modules are plug-in units for PLCs, programming devices or PCs. They are available as
local modules, expansion modules, interfaces or mass storage (Mass storage module).
Motherboard
The motherboard is the core of the computer. Here, data are processed and stored, and
interfaces and device I/Os are controlled and managed.
