Opc Client - ABB COM600 Station Automation Series User Manual

COM600 3.2
2.3.4.
16
COM600 Station Automation Series
User's Guide
The protocol stack component implements the protocol functions, such as handshaking
signal handling, message coding/decoding, check sum calculations, polling logic, protocol
level timers and so on. The OPC server/protocol handler implements the functionality
for publishing and updating data on the OPC interfaces and protocol conversion between
the OPC and the protocol stack using the common IEC 61850 data model.
The configuration of the OPC server and the protocol stack is handled using a configur-
ation parser. The OPC server is configured using Communication Engineering Tool.
The configuration information is exported to an SCL/XML configuration file according
to the IEC 61850 SCL specification. When the OPC server is started, the configuration
information is read from the file.
Figure 2.3.3-1 Conceptual view of OPC server

OPC client

The OPC client software consists of a Slave/Server Protocol Stack, OPC DA Client,
Configuration SCL, OPC Data Access Server and Alarm&Event server components for
diagnostic and control.
The protocol stack component implements the protocol functions, such as handshaking
signal handling, message coding/decoding, check sum calculations, polling logic, protocol
level timers and so on. The OPC client/protocol handler implements the functionality
for data subscription from the OPC servers and protocol conversion between the OPC
and the protocol stack using the common IEC 61850 data model.
The configuration of the OPC client and the protocol stack is handled using a configura-
tion SCL. The OPC server is configured using Communication Engineering Tool. The
configuration information is exported to the SCL/XML configuration file according to
the IEC 61850 SCL specification. When the OPC client is started the configuration
information is read from the file.
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