Siemens SIPROTEC 6MD665, Руководство пользователя

Страница: 216 / 222

Glossary
202
6MD665 Manual
C53000-G1876-C103-3
MVMV Metered value which is formed from the measured value
Navigation pane The left pane of the project window displays the names and symbols of all containers
of a project in the form of a folder tree.
Object Each element of a project structure is called an object in DIGSI.
Object properties Each object has properties. These might be general properties that are common to
several objects. An object can also have specific properties.
Off-line In Off-line mode a link with the SIPROTEC 4 device is not necessary. You work with
data which are stored in files.
On-line When working in On-line mode, there is a physical link to a SIPROTEC 4 device which
can be implemented in various ways. This link can be implemented as a direct con-
nection, as a modem connection or as a PROFIBUS FMS connection.
Folder This object type is used to create the hierarchical structure of a project.
Setting parameters General term for all adjustments made to the device. Parameterization jobs are exe-
cuted by means of DIGSI or, in some cases, directly on the device.
Parameter set The parameter set is the set of all parameters that can be set for a SIPROTEC 4
device.
PROFIBUS PROcess FIeld BUS, the German process and field bus standard, as specified in the
standard EN 50170, Volume 2, PROFIBUS. It defines the functional, electrical, and
mechanical properties for a bit-serial field bus.
PROFIBUS
Address Within a PROFIBUS network a unique PROFIBUS address has to be assigned to
each SIPROTEC 4 device. A total of 254 PROFIBUS addresses are available for each
PROFIBUS network.
Project Content-wise, a project is the image of a real power supply system. Graphically, a
project is represented by a number of objects which are integrated in a hierarchical
structure. Physically, a project consists of a series of folders and files containing
project data.
Process bus Devices with a process bus interface allow direct communication with SICAM HV
modules. The process bus interface is equipped with an Ethernet module.
Battery The buffer battery ensures that specified data areas, flags, timers and counters are
retained retentively.
Reorganizing Frequent addition and deletion of objects gives rise to memory areas that can no
longer be used. By cleaning up projects, you can release these memory areas again.
However, a clean up also reassigns the VD addresses. The consequence of that is
that all SIPROTEC 4 devices have to be reinitialised.