Product overview
Section 1 Introduction
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Section 1 Introduction
1.1 Product overview
The SPA OPC Server provides methods for OPC Clients to exchange data with devices
connected to the SPA bus. OPC Clients can access process data, alarms and events from
SPA devices, such as protection and control relays that support the SPA protocol
v. 2.5 or earlier.
The SPA OPC Server supports the OPC Data Access v.1.0/2.0 and OPC Alarm and Event
interfaces. It can be run on the same computer with an OPC Client, see Figure 1-1, or on
a separate communication server computer. If the SPA OPC server is running on a
separate computer, the communication between the client and the server is based on
Distributed Component Object Model (DCOM), see
PC with:
Windows 2000 or
Windows XP
SPA OPC Server
RS-232 port
Protection and control
devices communicating
through the SPA protocol
REF+REX.tif
Figure 1-1: The SPA OPC Server system overview
1MRS755221
