Section 3 - Features - ABB SPA OPC Server User Manual

The purpose of this section is to describe the basic features of the SPA OPC Server. This
chapter also describes concepts like OPC Data Access Namespace, Attributes and OPC
Alarms and Events Area Space.
The software component structure of the SPA OPC Server is shown in Figure 3-1.
OPC Data Access Server OPC Data Access Server
Figure 3-1: Software component structure of the SPA OPC Server
The SPA OPC Server supports the following features:
• OPC Data Access v. 1.0/2.0 and OPC Alarms and Events specifications
• System supervision:
– SPA line communication
– SPA device communication
• SPA communication
– The SPA protocol v. 2.5 or earlier supports max. eight lines per server and max.
• Supported SPA data types and functions:
– Event based single and double indications, initial values requested when the
1MRS755221
Common services: Configuration Handler, Common services: Configuration Handler,
SPA to OPC data conversion and routing SPA to OPC data conversion and routing
SPA Protocol Stack SPA Protocol Stack
30 devices/modules per line.
server starts up
Section 3
OPC Alarm and Event Server OPC Alarm and Event Server
Section 3 Features
Features
Configuration Tool Configuration Tool
Configuration Configuration
INI file INI file
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