Access to process data with OPC-DA using IEC61499 Service Interface Function Blocks
ABSTRACT The need for flexibility in manufacturing systems is continuously growing. This need deals with the establishment of design methodologies for implementing distributed applications. The IEC61499 define a generic architecture for designing distributed applications, based on Functions Block (FB) networks. The interface between the control software and the hardware is achieved by means of the so called Service Interface FB. But guidelines to implement this type of FBs are provided neither by the standard nor by the available tools. On the other hand, one of the most widely used industrial communication standard is OPC that enables the exchange of data between multi-vendor devices and control applications without any proprietary restrictions. Thus, an easy integration of this communication standard within IEC61499 applications may contribute to consolidate such standard. This paper presents the guidelines to use OPC in industrial applications through the definition an implementation of SIFBs to access process data using OPC-DA (OPC Data Access) specification.
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ABSTRACT: Introduces the communication among a variety of Industrial Ethernet based on OPC industry standard, and details the entire process developing OPC data access server in the visual studio 2008 development environment with the example of Modbus/TCP. It takes Siemens WinCC 6.0 as OPC client in a FPCB (Flexible Printed Circuit Board) film production system in this paper to test and achieve the normal communication between configuration software WinCC and OPC data access server. It is convenient to achieve a variety of system integration of Industrial Ethernet, by adding other Industrial Ethernet protocol analysis module to this OPC server. Keywords -Modbus/TCP, OPC, WinCC
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ABSTRACT: Current complex industrial automation applications demand distribution, flexibility as well as adaptability to changes. On the other hand, the IEC 61499 standard specifically addresses this type of applications. It supports the definition of multidisciplinary views to independently define the functionality of the system from the hardware architecture. Notwithstanding this, although it was specifically defined to support the design of distributed automation applications, it is not being consolidated in industry as it expected. Among others, one of the reasons that can explain this situation is the lack of design methodologies and powerful tools oriented to designers. Using the available frameworks that support this standard, it is necessary to manually introduce the ad-hoc Service Interface Function Block (SIFB) as well as their link to the application Function Blocks (FB). This paper addresses this issue and it proposes a methodology to automatically generate distributed automation applications from the functional and architecture views, i.e. using the appropriated SIFBs from a SIFB repository of templates.01/2011; DOI:10.1109/ETFA.2011.6059116
Conference Paper: Configurable cooperative middleware for the next generation of CPS[Show abstract] [Hide abstract]
ABSTRACT: Cyber-Physical Systems (CPS) form an emerging discipline that integrates embedded computers with the physical processes under control. Typically, Cyber-Physical applications include low profile computing components, such as sensors and actuators that must communicate to carry out complex tasks. They may be found in different applications domains e.g. intelligent buildings, industrial automation or critical infrastructure control. This kind of applications requires certain features such as autonomy, fault tolerance, energy efficiency or solving heterogeneity and configurability issues. However, managing the communication issues in this kind of applications can be relatively complex. In this scenario, middleware technologies can help developers in the design of the next generation of CPS. This work describes the design principles of a type of CPS that requires cooperation. More specifically, it presents a generic family of logical cooperation topologies capable of adapting dynamically to changes in the environment.Remote Engineering and Virtual Instrumentation (REV), 2012 9th International Conference on; 01/2012