SIEMENS
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Siemens IK PI · 2015
PROFINET/Industrial Ethernet
Communication for PC-based systems
OPC server for Industrial Ethernet
2
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Application
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
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Function
•
Optimized data block access to S7-1500
•
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 entirely using
the tools of the installed SIMATIC NET software
PN
OPC server
S7
OPC server
FMS
OPC server
DP
OPC server
XY
OPC server
Server A
Server C
Server B
U
GG
U
GG
U
U
GG
U
GG
U
Application X
Application Y
WinCC
OPC Client
Application X
OPC Client
G_IK10_XX_10106
© Siemens AG 2014