5. CONFIGURATION
ATTENTION
The simulation mode of MasterTool IEC XE software can be used for OPC communication
tests. The information on how to configure it are presented in the Testing an OPC Commu-
nication using the Simulator section of the MasterTool IEC XE User Manual – MU299609.
5.5.11. OPC UA Server
The OPC UA protocol is an evolution of the OPC family. Independent of platform, it is designed to be the new standard
used in industrial communications.
Based on the client/server architecture, the OPC UA protocol offers numerous advantages in the development of design
and facilities in communication with the automation systems.
When it comes to project development, configuring communication and exchanging information between systems is ex-
tremely simple using OPC UA technology. Using other address-based drivers, it is necessary to create tables to relate the
supervision system tags and programmable controller variables. When data areas change during project development, it is
necessary to redo the mappings and new tables with the relationships between the PLC information and the SCADA system.
Figure 91: OPC UA Architecture
The figure above presents a typical architecture for SCADA system communication and PLCs in automation design. All
roles present in the communication are explicit in this figure regardless of where they are running, they may be on the same
equipment or on different equipment. Each of the roles of this architecture is described in table below.
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