What is Route 2H approach and what requirements exida established to interpret Route 2H for certification? An element (e.g. a sensor) is able to meet the requirement of hardware safety integrity architectural constraints in IEC 61508 by implementing one of the two possible routes (IEC 61508-2, 7.4.4): 1H, by looking at Safe Failure Fraction (SFF)…
As mentioned in the previous blog, IEC 62443-2-1 specifies the requirement of the Cyber Security Management System for IACS which the asset owner can build on. For example, one of the CSMS elements, “selected security countermeasures”, provides useful information to the asset owner on understanding some common security countermeasures used in the systems, whose security…
An asset owner is defined in IEC 62443-2-4 as following: “individual or organization responsible for one or more IACSs”. Similar to quality management system, the requirement for the Security Management System of the asset owner is described in IEC 62443-2-1, which shows how the risk is analysed and addressed by the Cyber Security Management System…