Standards

This technical report presents an overview and guidance for the IEC 61158 series. IT explains the structure and content of IEC 61158, shows how to use it in combination with IEC 61784, and relates the structure to the ISO/IEC 7498 OSI basic reference model.

The fieldbus data link layer provide basic time-critical messaging communication between devices in an automation environment. The purpose of this part of IEC 61158 is to define eight distinct and non- interoperable fieldbus Data link protocols. Each protocol defined in this standard is most most closely related to and lies within the field of application of the corresponding services of IEC 61158-3. the fieldbus data link services definition .

This action of IEC 1241-2 specifies two last methods for determining the minimum ignition temperatures of dust. The methods are not suitable for use will having explosive properties.

In addition to the scope of International standard IEC 61326-1, this part specifies minimum requirements for immunity and emission regarding electromagnetic compatibility for in vitro diagnostic medical equipment equipment, taking into account the particularities and specific aspects of this electric equipment and their electromagnetic environment.

This part of IEC 61508 contains information and guidelines on IEC 61508-2 IEC 61508-3 - Annex A gives a brief overview of the requirements of IEC 61508-2 and IEC 61508-3 and sets out the functional steps in their application.

This part of IEC 61606 specifies the basic measurement methods of a linear PCM signal for an audio part of personal computers (PCs) and applies to both desktop and portable computers. The common measuring conditions and methods are described in IEC 61606-1 specific conditions and methods of measurement for PCs are given in this standard.

This part of IEC 61850 specifies the specific communication service mappings for the communication between bay and process level and if specifies a mapping on a serial unidirectional multidrop point point to point link in accordance with IEC 60044-8. This part of IEC 61850 specifies a mapping of the abstract service for the transmission of sampled values ( as defined in IEC 61850-7-2 ) on a serial unidirectional multidrop point link in accordance with IEC 60044-8. It applies to the communication between merging units of electronic current (ECT) or voltage-transformers (EVT) and bay devices such as protection relays. If higher requirements on sampling rate. further sampling measured value data sets in addition to the universal data set. inter-bay communication and synchronization apply, these will be covered by IEC 61850-9-2 Figure 1 show the schematics of this interface.

This part of IEC defines the specific communication services mapping (SCSM) for the transmission of sampled values according to the abstract specification in IEC 61850-7-2. The mapping is that of the abstract model on a mixed stack using access to an ISO/IEC 8802-3 link for the transmission of the samples in combination with IEC 61850-8-1.

This clause of Part 1 is replaced by the following. This International standard deals with the safety of electric fans for household and similar purposes, their rated voltage being not more than 250V for single-phase appliances and 480 V for other appliances.

This part of the ISO/IEC 9314 specifies the Media access control (MAC) the middle sublayer of the data link layer (DLL) for fiber distributed data interface (FDD). FDDI (ISO/IEC 9314) provides a high- bandwidth (100 Mbits) general - purpose interconnection among information processing systems, subsystems and peripheral equipment, using fiber optics or other transmission media. (FDDI can be configured to support a sustained data transfer rate of at least 80 Mbits/s (10 Mbyte/s). FDDI provides connectively for many nodes distributed over distances of many kilometers in extent. Certain default parameter values for FDDI (eg. timer settings) are calculated on the basis of up to 1000 transmission links or up to 200 km total fiber path length (typically corresponding to 500 nodes and 100 km of dual fiber cable, respectively) however, the FDDI protocols can support much larger networks by increasing these parameter values.