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La CEI 62439-4:2010 est applicable aux réseaux d'automatisation à haute disponibilité basés sur la technologie ISO/CEI 8802-3 (IEEE 802.3) (Ethernet). Elle définit un protocole de redondance basé sur la duplication du réseau, le protocole de redondance étant exécuté dans les n uds terminaux, par opposition à un protocole de redondance intégré aux commutateurs. La décision de commutation est…

IEC 62439-6:2010 is applicable to high-availability automation networks based on the ISO/IEC 8802-3 (IEEE 802.3) (Ethernet) technology. It specifies a recovery protocol based on a ring topology, designed to react deterministically on a single failure of an inter-switch link or switch in the network. Each switch has equal management role in the network. Double rings are supported. It cancels and…

La CEI 62439-6:2010 concerne les réseaux d'automation à haute disponibilité reposant sur la technologie (Ethernet) ISO/CEI 8802-3 (IEEE 802.3). Elle spécifie un protocole de récupération reposant sur une topologie en anneau, conçu pour réagir de manière déterministe sur une seule défaillance d'une maille inter-étage ou d'un commutateur du réseau. Chaque commutateur joue un rôle de…

IEC 62439-5:2010 is applicable to high-availability automation networks based on the ISO/IEC 8802-3 (IEEE 802.3) (Ethernet) technology. This part of the IEC 62439 series specifies a redundancy protocol that is based on the duplication of the network, the redundancy protocol being executed within the end nodes, as opposed to a redundancy protocol built in the switches. Fast error detection is…

Manufacturers of bar code equipment and users of bar code technology require publicly available standard symbology specifications to which they can refer when developing equipment and software. ISO/IEC 15420:2009 specifies the requirements for the bar code symbology known as EAN/UPC. It specifies EAN/UPC symbology characteristics, data character encodation, dimensions, tolerances, decoding…

Manufacturers of bar code equipment and users of bar code technology require publicly available standard symbology specifications to which they can refer when developing equipment and software. ISO/IEC 15420:2009 specifies the requirements for the bar code symbology known as EAN/UPC. It specifies EAN/UPC symbology characteristics, data character encodation, dimensions, tolerances, decoding…

IEC/PAS 61753-1-3:2009(E) is a Publicly Available Specification (PAS) that defines the minimum initial performance, test and measurement requirements and severities which a single-mode connector or cable assembly must satisfy in order to be categorized as meeting IEC Category I (industrial environment). Category I is an addition to environmental categories C, U, O, E described in IEC 61753-1 and…

This National Standard of Canada is equivalent to International Standard ISO/IEC 11770-3:2008. 1 Scope This part of ISO/IEC 11770 defines key management mechanisms based on asymmetric cryptographic techniques. It specifically addresses the use of asymmetric techniques to achieve the following goals. 1) Establish a shared secret key for a symmetric cryptographic technique between two entities A…

IEC 60364-5-56:2009 covers general requirements for safety services, selection and erection of electrical supply systems for safety services and electrical safety sources. Standby electrical supply systems are outside the scope of this part. This part does not apply to installations in hazardous areas (BE3), for which requirements are given in IEC 60079-14. This second edition of IEC 60364-5-56…

IEC 61987-10:2009 provides a method of standardizing the descriptions of process control devices, instrumentation and auxiliary equipment as well as their operating environments and operating requirements (for example, measuring point specification data). The aims of this standard are: - to define a common language for customers and suppliers through the publication of Lists of Properties (LOPs…