Siemens Simatic S7-1500R System Manual page 315

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.
Ground
Conductive ground whose electrical potential can be set equal to zero at any point.
All interconnected, inactive parts of a piece of equipment.
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 the properties of a PROFINET or
PROFIBUS device that are necessary for its configuration.
Hardware interrupt
You will find further information in the glossary entry "Interrupt, hardware".
H-Sync forwarding
H-Sync forwarding enables a PROFINET device with MRP to forward synchronization data
(synchronization frames) within the PROFINET ring only.
H-Sync forwarding also forwards synchronization data during reconfiguration of the
PROFINET ring. This reduces the load for the cycle time.
H-Sync forwarding is recommended for PROFINET devices that you use in the PROFINET
ring of redundant S7-1500R systems.
H-Sync forwarding is not relevant for redundant S7-1500H systems.
I/O module
Device of the distributed I/O that is used as an interface between the controller and the
process.
Identification data
Information that is saved in modules, and that supports the user in reviewing the system
configuration and locating hardware changes.
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S7-1500R/H redundant system
System Manual, 10/2018, A5E41814787-AA