Replication in distributed systems using IEC 61499 standard

Abstract

The international Electrotechnical Commission (IEC) 61499 architecture incorporated several function block with which distributed control application may be developed, and how these are interpreted and executed. However, due the distributed nature of the control applications, many issues also need to be taken into account. Most of these are due to the new error model and failure modes of the distributed hardware on which the distributed application is executed and also due the incomplete standards definition of the execution models. IEC 61499 frameworks does not clarify how to handle with replication of software and hardware components. In this paper we propose a replication model for IEC 61499 applications and which mechanisms and protocols may be used for their support.

Automatic composition of IEC 61499 distributed control applications

“…SIFBs can communicate parts of the application residing in different resources of the same device or parts of the application residing in different devices [14]. Thus, SIFBs are responsible for providing the communication between the logic control and the hardware, the communication system, the interfaces or the simulation system [13].…”

“…Santos et al [14] propose a replication model for IEC 61499 applications supported by a mechanism and a protocol. The replication is performed at the component (FB) level.…”