OPC server for Industrial Ethernet производства Siemens

The basic principle of OPC is that OPC client applications communicate with the OPC server over a standardized, open and manufacturer-independent interface.

It is also possible to connect to OPC-capable Windows applications (Microsoft Office or HMI systems) that are already available on the market.

The following communication possibilities are available for Industrial Ethernet with OPC server:

• S7 communication
• Open communication (SEND/RECEIVE)
• PROFINET
• SNMP (Simple Network Management Protocol)

The OPC server offers, for example:

• Data Access interfaces 2.0, 2.05a and 3.0
• Alarm and event interface 1.1
• OPC XML DA interface 1.0
• Integration of automation products of different manufacturers
• Uniform, easy user interface for different components
• Can be accessed from every computer in the LAN
• High-performance data access over the Custom Interface (C++, NET)
• Easy to use with the “Automation Interface“ (VB, NET) or the supplied OCX Data Control or .NET Data Control
• Grouping of variables (Items); which allows a large quantity of data to be pre-processed in a short time.
• Optional redundancy expansion for S7 communication

• Simple use of different networks and protocols through uniform interface
• Reduced training and familiarization overhead
• Increased availability of the plant information by means of redundant SIMATIC NET OPC server
• Simple integration into the system environment and office applications via C++, Visual Basic- and .NET interfaces
• Short setup times for applications
• Simple handling and cost effective since the appropriate OPC servers are included in the scope of supply of the respective communication software

1) also S5-compatible communication

• Open standardization of the addressing using logical names for objects from an automation component or an automation system
• Supports STEP 7 symbols
• Efficient data transfer from a process component to an application for further processing
• One client application can use several servers simultaneously
• Simultaneous execution of more than one client is possible on one OPC server
• Communication protocols can be used in parallel by means of the multiplexer function
• Interfaces
  • "Custom Interface“ for high-performance C++/NET applications
  • "Automation Interface" for easily created Visual Basic applications (or similar)
  • XML DA interface;
    Data access to S7 CPUs is therefore possible over the Internet.
  • OCX Data Control or .NET Data Control for direct integration in Windows applications that support COM/DCOM

Comparison of conventional client/server architecture with an OPC architecture

Configuration

The communication parameters are configured using only the tools of the installed software Advanced PC Configuration (configuration console, SIMATIC NCM PC or from STEP 7 V5.1 + SP2); SIMATIC iMAP is used for PROFINET CBA.