ProSoft Technology PLX8X-MNET-61850 - Manual (Page 221)

PLX8x-MNET-61850 ♦ Communication Gateway Glossary of Terms
Modbus TCP/IP to IEC 61850 User Manual
ProSoft Technology, Inc. Page 221 of 228
May 14, 2014
Supporting Tools
Support the user in the engineering, the operation and the management of the
SAS and its IEDs. The supporting tools can perform the following tasks:
engineering, project management, parameter change, diagnostics, testing,
documentation, and other services.
Usually the supporting tools are part of the SAS and they run on an IED (for
example, PC).
Switch
Active network component that connects two or more subnetworks, which
themselves could be built of several segments connected by repeater. Switches
establish the borders for so-called collision domains. Collisions cannot take place
between networks divided by switches, as data packets destined to a specific
subnetwork do not appear on the other subnetworks. To achieve this, switches
must have knowledge of the hardware addresses of the connected stations. In
cases where only one active network component is connected to a switch port,
collisions on the network can be avoided.
System
Set of interacting entities which perform a common functionality. Its backbone is
some communication mechanism.
System Integrator
Turnkey deliverer of SAS installations. The responsibility of system integration
includes the engineering, the delivery and mounting of all participating IEDs, the
factory and site acceptance tests and the trial operation. The quality assurance,
maintenance and spares delivery obligations, and the warranty shall be agreed
upon in the contract between the system integrator and the customer.
System Life Cycle
Two independent meanings:
A For the manufacturer - the time period between the start of the production of
a newly developed SAS product family and the discontinuation of support for
the IEDs.
B For the customer - the time period between the commissioning of an SAS
installation mainly based on a SAS product family and the decommissioning
of the latest SAS installation from the same family.
System Parameters
Data that defines the interaction of IEDs in the SAS. They are especially
important in the definitions for configuration of the SAS, communication between
IEDs, for marshaling of data between IEDs, for processing and visualization of
data from other IEDs, for example at the station level, and for parameterization.
System Test
Check of correct behavior of the IEDs and of the overall SAS under various
application conditions. The system test marks the final stage of the development
of IEDs as part of a SAS product family.