IEC 61850 provides a method for identifying all signals that belong to a function. These
signals are identified through the logical nodes representing the functions. All signal
information for commands and monitoring are available in logical nodes.
Whenever a function block is instantiated in the Application Configuration tool, PCM600
automatically generates the corresponding logical node data.
7.2.1.1 GOOSE data exchange
The IEC 61850 protocol supports a method to directly exchange data between two or more
devices (IEDs). This method is described in the IEC 61850-7-2 clause 15.
The concept is based on sending a multicast over the Ethernet. Whoever needs the
information, detects the telegram by its source address, reads the telegram and handles it.
The telegrams are multicast sent and not acknowledged by the receiver.
en05000830.vsd
IED 3
Send
Data-set
Receive
Receive
LN
LN
LN
LN
LN
IED 2
Send
Data-set
Receive
Receive
LN
LN
LN
LN
IED 1
Send
Data-set
Receive
Receive
LN
LN
LN
LN
LN
LN
IEC 61850 Subnetwork
GUID-8368FB2E-406D-4C05-B34B-9BAF4D655340 V1 EN
Figure 83: IEC 61850: Horizontal communication principle, an example of three
IEDs where each IED communicates with all others
When a GOOSE message is to be sent, it is defined by configuring the data set with the
defined trigger option and GoCB. This engineering process is done in a station
configuration tool, for example, IEC 61850 Configuration tool or IET600. The task
involves configuring lists with the signal, value and quality (data attributes or data objects)
that belong to the GOOSE message data set.
In the opposite direction, the standard only defines the IED as a receiver of a GOOSE
message. How the GOOSE input signals are handled must be defined in the device's
application configuration. The SCL data generated by the IEC 61850 Configuration tool
or IET600 (or any other station configuration tool) contains the GOOSE data sets as input
1MAC108982-MB E Section 7
IEC 61850 communication engineering
615 series ANSI 133
Engineering Manual
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