Assessment of PROFIBUS Networks Using a Fault Injection Framework

Abstract

Industrial control systems architectures have been evolving to the decentralization of control tasks. This evolution associated with the time-critical nature of these tasks, increases the dependability requirements for one of their most critical components: the communication system. Therefore, this is an important aspect on the control system design which must be properly evaluated. In this paper the dependability of a PROFIBUS network is assessed. By using of a fault injection framework the network operation is disturbed with fault scenarios which are representative of industrial environments. From these experiments, the stability of the PROFIBUS logical ring is analyzed, the main outages causes are identified and their probabilities are obtained.

Arquitetura para injeção de falhas em protocolos de comunicação segura em aplicações críticas

“…Os trabalhos mais próximos do relatado aqui são injetores de falhas para redes de controle. Fault Injection Framework for PROFIBUS, uma rede de campo que suporta PROFIsafe, é um framework de injeção de falhas desenvolvido para avaliar o PROFIBUS (Carvalho, Carvalho, and Portugal 2005). Seu principal objetivo é analisar o comportamento do PROFIBUS na ocorrência de falhas e também a interferência dos mecanismos de tolerância a falhas no desempenho do protocolo.…”

Grouping TDMA access for industrial wireless sensor networks with multiple access points

“…In [2][3], master-slave based polling protocols are proposed, the authors use a different channel for retransmission. However, in [4] [5], it is shown that there will be serious issues of unstability if the token frames are lost. A well known solution for industrial wireless automation is WirelessHart [6] [7], which supports mesh networks and TDMA based scheduling.…”

Channel adaptive real-time medium access control protocols for industrial wireless networks

“…In [49], the adaptive-intervals MAC protocol has been proposed that uses a polling-based approach combined with group testing feature for improving the delay in low load conditions. However, in [7,22], the authors show the serious stability issues due to the loss of token frames leading to unsatisfying real-time performance arising from running the existing PROFIBUS MAC and link-layer token-passing master-slave protocols over an 802.11 DSSS PHY. Works such as [39] where the authors propose schemes to support combined periodic and aperiodic traffic over Bluetooth networks, [44] where the authors propose the use of DSSS CDMA technology to build Industrial Control WLAN for enhanced robustness, and [32,35,30] which propose extensions for a wireless fieldbus network also fall into the category of using existing standardized protocols for real-time communication over wireless networks.…”