Section 3 Vendor-Specific Implementation; Protocol Server Instances; Connection To Clients - ABB Relion 620 Series Protocol Manual

1MRS757645 B
Section 3
3.1
3.1.1
620 series
Communication Protocol Manual
Vendor-specific implementation

Protocol server instances

The word "client" refers to the protocol master. The IED is referred to
as "server" or a slave device.
The IED can communicate with several protocol clients simultaneously. Furthermore,
it is possible to configure the IED to provide different protocol data and data outlook
for different clients. A protocol server communication entity which is configured to
operate against a specific master or client is called an instance.
There are three server instance scenarios.
1. One client - One protocol instance - One protocol mapping. The IED is intended
to operate toward one protocol client. The default protocol data mapping or data
outlook can be modified freely.
2. Several clients - Several protocol instances - One protocol mapping. The IED is
intended to operate toward several protocol clients. All the clients should be able
to access exactly similar data or similar data outlook. The default protocol
mapping or data outlook can be modified freely.
3. Several clients - Several protocol instances - Several protocol mappings. The IED
is intended to operate toward several protocol clients. Some or all of the clients
may want to access protocol data in a different manner. For this purpose, several
protocol mappings derived from the default protocol mapping need to be
prepared.

Connection to clients

In the IED, it is possible to activate up to five protocol server instances. A function
block represents the protocol on the IED's application configuration level. The block
is named MBSLPRT1...5, depending on the instance in use. For each connected client,
an instance has to be activated by dragging the function block to the configuration in
the PCM600 Application Configuration tool.
MBSLPRT
STATUS
GUID-33798829-A4CB-4C59-9F8D-7FC8FF91815E V1 EN
Figure 2: Function block
By default, instance 1 is always instantiated in the IED, but needs to be set "On" to be
activated. Since the IED's native IEC 61850 data model restricts client limit to five,
Vendor-specific implementation
Section 3
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