Siemens SIMATIC S7-1500/ET 200MP System Manual page 375

Glossary
Ground
Conductive ground whose electrical potential can be set equal to zero at any point.
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
The Generic Station Description file contains all properties of a PROFINET or PROFIBUS device
that are necessary for its configuration.
Hardware interrupt
You can find relevant information under the entry "Interrupt, Hardware "
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 reviewing the system
configuration and locating hardware changes.
Instance data block
Each call of a function block in the STEP 7 user program is assigned a data block, which is
automatically generated. Values of the input, output and in/out parameters, as well as local
block data, are stored in the instance data block.
Interface module
Module in the distributed I/O system. The interface module connects the distributed I/O
system to the CPU (IO controller) via a fieldbus, and prepares the data for and from I/O
modules.
Interrupt
The operating system of the CPU distinguishes between various priority classes that control
the execution of the user program. These priority class processes include, for example,
hardware interrupts. When an interrupt occurs, the operating system automatically calls an
assigned organization block. The user can program the desired reaction in the organization
block, e.g. in a FB.
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Automation system
System Manual, 01/2023, A5E03461182-AK