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Possibilities of industrial Ethernet usage in safety critical applications

Franeková M., Ondrašina T., Ľupták J., Vestenický P.

Archives of Transport System Telematics

2010

Vol. 3, iss. 4

8-13

Authors describe the possibilities of the industrial Ethernet usage in safety-critical applications as a component of safety-related control systems. The main part of the paper summarizes the safety requirements of industrial Ethernet ProfiNet and Ethernet/IP based on ProfiSafe and CIPSafety safety profiles oriented towards identification of communication errors and recommendations of protective mechanisms which are applied in communication protocols. In the practical part the results of performed cryptanalytic attacks on the wireless communication protocol based on the IEEE 802.11 standard are mentioned.

Analyses of safety-related message transmission

Rástočný K., Franeková M.

Archives of Transport System Telematics

2009

Vol. 2, iss. 3

22-26

The analyses were aimed at determination of failure effects in the transmission system, which allow identifying the transition process of the system from a safety state (it may not be necessarily a failure - a free state) to a dangerous state and permit to calculate probability of the dangerous state occurrence of the system as a failure effect to the operating system. Dangerous states of the safety Fieldbus system are mainly caused by systematic failures within a specification of the system, electromagnetic interferences (EMI) and random failures of the HW effects. The effects of electromagnetic interferences and random failures of HW can be described in the paper by the use of time table.