Contents
  1. Normas al día AENOR Nº by Revista AENOR - Issuu
  2. IS/IEC 62264-2: Enterprise-control system integration, Part 2: Object model attributes
  3. IS/IEC 62264-1: Enterprise-Control System Integration, Part 1: Models and Terminology
  4. Sabine Tejpar

IS/IEC Enterprise-Control System Integration, Part 1: Models and Identifier: pertucenrine.tk DOWNLOAD OPTIONS. IS/IEC Enterprise-control system integration, Part 2: Object model Identifier: pertucenrine.tk DOWNLOAD OPTIONS. Download EPUB Ebook here { pertucenrine.tk }. .. family of standards (ISA), known internationally as IEC/ISO

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DOWNLOAD OR READ: IEC PDF EBOOK EPUB MOBI. Page 1 iec IEC is an international standard for enterprise-control system. DOWNLOAD OR READ: ISA 95 INTEGRATION STANDARDS A COMPLETE GUIDE EDITION PDF EBOOK EPUB MOBI. Page 1 IEC standards define Home - ISA MESA Tutorial Practical Applications of. IEC defines activity models of manufacturing operations management that in this document are consistent with the object models definitions given in IEC ,70 (Download and hardcopy) Adobe DRM ePub File.

The information for scheduling may also contain rules, e. Data flow between scheduling and production systems. It should also be pointed out that the data are normally provided by several systems or applications and collected into a production management system that then passes it forward to the scheduling. Necessary inputs are typically production recipes often managed by ERP , current situation at the plant floor MES or distributed control system , maintenance needs maintenance management , equipment status asset management , etc. All data elements do not exist in the basic standard, so it is necessary to further adapt it according to flexibility provided by the standard. In the following subsections, we propose how to structure the different B2MML elements and briefly explain and reflect them using the above example process. The process segments are defined here with possible additional information. For the flow-shop example above, we only need to list the main processing stages, as well as possible parameters that are generic and apply for all cases. Here, the main ID and description are just for information and can be selected based on the user preference e. The same applies to most ID elements, but it might be helpful to always define readable and understandable identifiers as this makes possible debugging or generation of overviews easier.

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Normas al día AENOR Nº by Revista AENOR - Issuu

The proposed stratigraphic units are not part of either, and are located between, the two previously named and non-contiguous formations in the bolson the Miocene Muddy Creek Formation and the late Pleistocene Las Vegas Formation Longwell et al The high number of students, their geographical dispersion and their different level of knowledge and experience arise attended training limitations in this area.

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In addition, an analysis is made of the contribution of the electrical energy saving to the environmental protection and the actions that the Comision Federal de Electricidad of Mexico will undertake on the electric energy saving for the to the period. The growth of S. Results indicate that total urban land-use increases approximately percent from to Manager, updates on ongoing issues and planning efforts, presentation on the TriCounty Resource Management The article addresses the goals of a national project created with the purpose of systematize all actions of the country tzller this area, including the definition of the responsibilities of the participating institutions and the actions to ensure consistency with the guidelines of the IAEA in this field.

INIS provides a comprehensive service references on literature information on radiation protection RPnuclear science and technology, medicine, etc. Bioturbation or macrobenthic organisms other than inoceramids do not occur in the Agua Nueva Formation at Xilitla. The whole entrances in the site of the participating students registered trough the course arewhich supposes an average of nearly 53 entrances per year per student.

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Here, the existing equipment is collected with relatively little information see Figure 5. The ID is always mandatory and must be unique for each B2MML element in order to correctly identify the element, whereas the optional description element is free text with the purpose of only providing clarity or some useful information for the human reader.

In the main Equipment element, we simply want to know which equipment are available ID and some specific properties that they may have. The latter property can be used to indicate that an equipment can be used for production only after a given date, for instance, due to a longer maintenance action.

IS/IEC 62264-2: Enterprise-control system integration, Part 2: Object model attributes

It is also important to provide a class ID in case the equipment is part of a larger group of equipment that offer similar type of functionalities or has certain common properties. Also, the ProcessSegment structure shown in the previous section must be able to refer to an equipment class ID. ISA information on equipment. Information on Material: MaterialInformation The material information is provided in a similar manner, see Figure 6.

Again, the generic ID and description may be used for the main element. One possibility is to simply list the material to be considered through the MaterialDefinition elements. The provided MaterialDefinitionProperties can be used to, for instance, indicate an initial material inventory status, as well as, the allowed minimum and maximum limits for the material storage.

It is important to note that energy forms such as gas or electricity should also be treated through the MaterialInformation structure.

For these, a maximum limit can also refer to the upper limit of simultaneous consumption. Defining the MaterialClassID is very helpful in classification of the materials. It can either be defined under the MaterialDefinition or under the MaterialClass structure, where the MaterialDefinitionID can simply be listed under the corresponding class.

ISA information on material. Often, material is considered to be unlimited and thus not included into the scheduling optimization step mainly due to modeling or numerical complexities that it raises.

IS/IEC 62264-1: Enterprise-Control System Integration, Part 1: Models and Terminology

Information on Personnel: PersonnelInformation For typical production scheduling problems, personnel is normally not considered in detail as it can be assumed that equipment have assigned operators. Nevertheless, in project planning or manual labor-intensive production steps, it may be critical to account for the individual employees already during the optimization step. The level of detail of the personnel may vary and, for instance, the working hours or even vacation plans of key people may be needed for the daily production planning.

In general, the information about the personnel follows exactly the same logic as for material and the data entries are the same. See the overview in Figure 7. ISA information on personnel. In practice, if the persons are needed as per their function, it may in fact be sufficient to just list the personnel classes under which the individuals are collected, e.

One operator is namely allowed to be member of several classes. Restrictions on Resources: OperationsCapability After having defined most of the resources necessary for scheduling a production process equipment, material, and personnel , the OperationsCapability structure defines some important limitations.

It can also be used for production stages ProcessSegments , which may be an important functionality for certain industries, where, for instance, some operations are not allowed to take place during the night due to safety or noise issues. In Figure 8 , the main structure of OperationsCapability is shown with a more detailed example on personnel.

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The main elements for the other resources are exactly the same — only the IDs and ClassIDs must be updated. ISA information on capability of resources. The main entries are which person or personnel class the capability refers to, the capability type available or unattainable , the reason for this e. In practice, the OperationsCapability structure makes it easy to specify shifts for personnel and other availability types for equipment and material, as well as for processing steps.

One practical note is that it is always better to define either availability or unavailability per equipment, the default assumption being that the opposite is true for the non-specified times.

The main structural element is OperationsDefinition see Figure 9 , which corresponds to one recipe and is composed of a number of OperationsSegments processing steps. In the OperationsSegment elements, it is exactly defined which equipment, personnel, or material resources must be brought together simultaneously in order to execute the segment. The recipe can either refer to classes of resources or to the exact instances of the required resources.

ISA information on production recipes. In Figure 9 , one can see the main fields of an OperationsDefinition. One sub-tree OperationsSegment is needed for each processing step. It contains entries such as duration, reference to the process segment in order to inherit some generic restrictions such as the process flow , and the resource specifications, followed by segment dependencies.

The recipe either refers to classes of resources, in which case the quantity of resources should be specified — or to the exact instance of a resource required. The segment dependencies provided in an OperationsDefinition are typically recipe-specific and refer always to other process segments.

As these are all input data and should comprise the complete information for the scheduling, one typical case needs to be discussed in more detail. Assume that we had exactly identical production resources to choose from. In this case, it would be possible to specify one unique duration and refer to the various resources through their classes requesting that, e. However, in the case where there are multiple but not identical resources to choose from, equipment-specific data such as duration must be distinguished somehow.

A way to handle this could be to introduce EquipmentSpecificationProperty elements under each equipment choice for stating the individual durations. This approach may become complex in cases where several resources depend on the equipment choice.

We therefore suggest to deal with this using nested OperationSegments Figure This means that we must create sub-level operations segments — one for each equipment choice that will have an impact on duration or another resource need. The nested structure is indicated by the number in brackets in Figure 10 , where the second level specifies the details that are valid if certain equipment is selected for the production order.

The duration element on the first level thus becomes redundant in the input data, which is indicated by the strikethrough text. Nested structure of operations segments in production recipes. In this case, the structures are used as follows. On level 1, OperationsSegment 1 , it should be only specified that a number of equipment of a certain equipment class is needed to perform the step.

All related definitions for each of the optional pieces of equipment should be provided in OperationsSegment 2 , the equipment itself belonging to the EquipmentSpecification section. Other equipment-related resource requirements should be given as in the shown example for personnel specification.

Note also that generic parameters can be defined for the segments; however, since the naming convention is not restricted, the parameter IDs, functionality, and logic must be clearly communicated between all connecting systems.

A parameter is defined similarly as properties, see for instance, PersonnelProperty in Figure 7. To summarize, the OperationsDefinition structure collects all resources together and defines how these should be used together at each production step in order to produce a production order. Due to the fact that most of the resource information is maintained separately by, for instance, other departments or software, the approach with separated data structures is very well motivated. The operations definition can naturally be expanded and used in a flexible way.

For instance, a third level of OperationsSegment could be defined to display some subtasks but in this particular case, the information would not be used for optimization. However, we leave this topic, as well as other specific detailed cases, out of the discussion here and focus on the core information that a scheduling optimizer needs to know to successfully perform its task. It is a container for the production order requests specifying what needs to be scheduled and after the scheduling task it feeds back the optimized schedule.

The latter role is the original one fully supported by the ISA standard.

These are namely the only time-related fields defined by the standard. In the ideal case, the input file is a list of operations requests that contain the order IDs, a reference to the recipe OperationsDefinitionID , operations type if not production , release and due dates for the order, and a priority for each order.

Based on this information, the production schedule can be fully created. Other necessary parameters could be embedded into a SegmentRequirement element and if certain values must be retrieved from the process during the execution, the placeholder for this information is SegmentResponse, which in fact defines the data that need to be retrieved from during production from the shop floor, i.

ISA information for Operations Schedule input to scheduler. After the scheduling task has been completed, the resulting schedule should be filled into the underlying segment requirement fields containing exactly the resource and timing information of operations determined by the scheduler. This information should be complete in order to enable a proper dispatching of the operations requests onto production shop floor.

The most important information for the main element OperationsSchedule is the end time of the schedule, corresponding to the make span. The remaining information falls into the individual operations requests and their segment requirements. Unfortunately, the standardized namings of ISA do not cover all needed terms, which mean that there are two options: define them as parameters or use the closest match.

We have selected the latter option in order to maximize the benefits of using a standard and its defined XML schemas. All other relevant pieces of information are basically packed into the segment requirements.

For each production step SegmentRequirement , the start time EarliestStartTime , end time LatestEndTime , and duration have now been defined by the scheduler. In the same manner, the personnel-, equipment-, and material requirements should now contain only those resources that have actually been planned for the operation, including the consumption or production of the planned resources.

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