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6 - 17
Siemens AG ⋅ January 1999
Following system disturbances, the recorded events
provide an important source of information regarding
the disturbance, and the functionality of the device.
Furthermore, they serve to check the sequence of
events in the device during testing and commissioĆ
ning. They also provide information about the states
of operational measuring data and the device itself
during operation.
No code word need be entered for retrieving messaĆ
ges.
The user may access information in different ways:
D Display by LEDs on the front panel of the device
(Figure 6.1),
D Binary outputs (signal relay) via the device termiĆ
nals,
D Indications on the front panel display or on the
screen of a PC via the interface,
Most messages can be marshalled to the LEDs and
binary outputs (see section 5.5). Multiple and group
messages are also possible.
To display messages on the control panel, the keys
A, ", Y and B can be used to scroll through the
menu tree to the "MESSAGE" block (see Figure 6.3).
From the initial position, in a device that is in service,
this block is reached by pressing the B key twice.
With the " key, the next operating level may be reĆ
ached and all message blocks can be accessed there
one after the other.
When operating via a PC and the operating program
DIGSI
R
the message addresses are identified by a
four-digit address number. This is shown in square
brackets with the explanation text in the following
representations.
The messages are categorized as follows:
D
Operational events; these are indications which
may occur during operation of the device: InformaĆ
tion about the state of the device functions, meaĆ
suring data etc.
D
Events of the last 8 network faults; starting, tripĆ
ping, time processes, or similar. By definition, a
network fault starts with the first fault detection of
a protective function and ends with the reset of
the last fault detection.
D
Display of operational measured values (currents).
The events and measured values are stored in lists.
After selecting the desired event block, the section of
the list visible on the display is shifted using the arĆ
row keys B and Y as shown in Figure 6.4.
B
B
I N D I C A T I O N "
Start of the event blocks
A full list of all the event and output functions generaĆ
ted in the device with the corresponding function
number FNo can be found in the appendix A.1.
It is also specified for every indication to where it can
be signaled.
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