Siemens SIMATIC ET 200SP System Manual page 260

Glossary
Ground
All interconnected, inactive parts of a piece of equipment that cannot accept any dangerous
contact voltage, even in the event of a fault.
Grounding
Grounding means connecting an electrically conductive part to a grounding electrode by
means of a grounding system.
GSD file
As a Generic Station Description, this file contains all properties of a PROFINET device that
are necessary for its configuration in XML format.
I/O modules
All modules that can be operated with a CPU or an interface module.
Identification data
Information that is saved in modules and that supports the user in checking the plant
configuration and locating hardware changes.
Interface module
Module in the distributed I/O system. The interface module connects the distributed I/O
system via a fieldbus to the CPU (IO controller) and prepares the data for and from I/O
modules.
IO-Link
IO-Link is a point-to-point connection to conventional and intelligent sensors/actuators by
unshielded standard cables in proven 3-wire technology. IO-Link is downward compatible to
all DI/DQ sensors/actuators. Switching status channel and data channel are designed in
proven 24 V DC technology.
Line
All the modules attached to a mounting rail.
Load current supply
Supply of modules like the interface module, power supply modules, I/O modules, and (if
applicable) sensors and actuators.
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Distributed I/O system
System Manual, 12/2015, A5E03576849-AF