Siemens SIPROTEC 4 7VK61 Manual page 350

Glossary
ExSI
External single point indication via an ETHERNET connection, device-specific → Single point indication
ExSI_F
External single point indication via an ETHERNET connection, Spontaneous event, device-specific → Fleeting
indication, → Single point indication
Field devices
Generic term for all devices assigned to the field level: Protection devices, combination devices, bay control-
lers.
Fleeting Indication
Fleeting indications are single-point indications present for a very short time, in which only the coming of the
process signal is logged and further processed time-correctly.
FMS communication branch
Within an FMS communication branch, the users communicate on the basis of the PROFIBUS FMS protocol via
a PROFIBUS FMS network.
Folder
This object type is used to create the hierarchical structure of a project.
General interrogation (GI)
During the system start-up the state of all the process inputs, of the status and of the fault image is sampled.
This information is used to update the system-end process image. The current process state can also be
sampled after a data loss by means of a GI.
GOOSE message
GOOSE messages (Generic Object Oriented Substation Event) according to IEC 61850 are data packets which
are transferred event-controlled via the Ethernet communication system. They serve for direct information
exchange among the relays. This mechanism implements cross-communication between bay units.
GPS
Global Positioning System. Satellites with atomic clocks on board orbit the earth twice a day on different paths
in approx. 20,000 km. They transmit signals which also contain the GPS universal time. The GPS receiver
determines its own position from the signals received. From its position it can derive the delay time of a satel-
lite signal and thus correct the transmitted GPS universal time.
Hierarchy level
Within a structure with higher-level and lower-level objects a hierarchy level is a container of equivalent
objects.
HV field description
The HV project description file contains details of fields which exist in a ModPara-project. The actual field infor-
mation of each field is stored in a HV field description file. Within the HV project description file, each field is
allocated such a HV field description file by a reference to the file name.
HV project description
All the data is exported once the configuration and parameterization of PCUs and sub-modules using ModPara
has been completed. This data is split up into several files. One file contains details about the fundamental
project structure. This also includes, for example, information detailing which fields exist in this project. This
file is called a HV project description file.
350 SIPROTEC 4, 7VK61, Manual
C53000-G1176-C159-5, Edition 05.2018