Siemens 6MD85, Manual

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The
Connection via
parameter is used to set the bit rate required for the protection interface. Different
discrete values can be entered depending on the means of communication (see following table).
Table 3-13 Means of Communication
Means of Communication See Setting Value Bit Rate
Fiber-optic direct connection Figure 3-4
4
to
Figure 3-4
7
fiber optic
2 MBit/s
CC-XG-512 communication converter Figure 3-4
8
CCXG 512 kBit/s
512 kBit/s
CC-XG-128 communication converter Figure 3-4
8
CCXG 128 kBit/s
128 kBit/s
CC-XG-64 communication converter Figure 3-4
8
CCXG 64 kBit/s
64 kBit/s
Repeater 512 communication converter Figure 3-5
1
repeater 512 kBit/s
512 kBit/s
CC-CC-128 Communication converter Figure 3-5
0
CCPW 128 kBit/s
128 kBit/s
CC-2M-512 Communication converter Figure 3-4
9
CC2M 512 kBit/s
512 kBit/s
Multiplexer with C37.94 interface Figure 3-5
2
C37.94 1 * 64 kBit/s
C37.94 2 * 64 kBit/s
C37.94 8 * 64 kBit/s
64 kBit/s
128 kBit/s
512 kBit/s
Other (freely adjustable bit rates for a direct
connection for special applications)
64 kBit/s
128 kBit/s
512 kBit/s
2048 kBit/s
64 kBit/s
128 kBit/s
512 kBit/s
2048 kBit/s
Routing Information in DIGSI 5
Protection communications of the same type form a topology.
For more information on this, see chapter
3.5.2.3 Function Description .
A data bar is exchanged between the devices of a topology connected via protection communication. This can
be written into or read from by the devices. This can be used for exchanging various signals between the
devices. In this case, each signal demands a certain number of data fields.
[dwdatenl-100113-01.tif, 1, en_US]
Figure 3-57 Data Bar Exchanged Between Devices
The data bar is divided into 3 priorities, which also have different transmission rates and data volumes.
The following basic principle applies for all messages: Only pure data contents are transmitted. The quality (for
example,
Valid
) is not automatically transmitted as well. If you want to transmit the quality as well (for
example, for further processing of GOOSE messages), the quality must be transmitted separately (for example,
by using CFC). If a signal that has a test flag is transmitted (because its function is in test mode, for example),
all signals are provided with a test flag on the receiving side. If the connection is broken, all received signals
are flagged with the quality
Invalid
. If desired, the value can also be set to a secure state after a selectable
3.5.2.7
System Functions
3.5 Protection Communication
112 SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017