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A. Platschek, B. Thiemann, H. Zeilinger, T. Sauter:
"An Error Model for Safe Industrial Communication";
Vortrag: 41st Annual Conference of the IEEE Industrial Electronics Society - IECON 2015, Yokohama, Japan; 09.11.2015 - 12.11.2015; in: "Proceedings of Conference on IEEE Industrial electronics Society (IECON) 2015", IEEE (Hrg.); (2015), ISBN: 978-1-4799-1762-4; S. 4672 - 4677.

The residual error rate of a safety critical system
gives the residual risk of a system failing, considering the
mitigation mechanisms that are in place to prevent incidents.
This calculation has to be based on a model that describes the
error rate of the system without mitigation mechanisms in place.
For industrial communication protocols, a simple error model
is given in IEC 61784-3 [1, B.3]. This simple model is an
abstraction of reality, trying to model just those properties
of reality needed to calculate the residual error rate for an
industrial communication system. Unfortunately, the model has
two problems that will be addressed in this paper: burst-errors
are not properly modelled and the Bit Error Rate (BER) of
the model is under heavy discussion in the standardization
committees.
Therefore this paper proposes another approach for an error
model that does not rely on a BER, but is based on the standards
used for electromagnetic compatibility (EMC) testing, and tends
to deliver a more realistic distribution of errors for industrial
environments.

error model, safe communication, OpenSafety, burst errors