本文件规定了COSEM客户机如何使用Web服务来访问DLMS/COSEM服务器,Web服务由中间的CAS(COSEM访问服务,COSEM Access Service)提供。DLMS/COSEM服务器含有一个应用服务器,支持IEC 62056-6-1和IEC 62056-6-2的数据模型以及IEC 62056-5-3的应用层。本文件没有覆盖CAS与DLMS/COSEM服务器之间的下层通信层。而是假定这些通信配置标准已经存在,这些标准描述了下层通信技术如何用于连接IEC 62056-6-1、IEC 62056-6-2和IEC 62056-5-3。
本文件规定的Web服务涉及IEC 62056-1-0所定义架构中的G2接口。
本文件规定了CAC(COSEM访问客户机,COSEM Access Client)与CAS(COSEM访问服务,COSEM Access Service)之间的Web服务,如图1所示。
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5.1 This test method is intended to simulate the slip of a flexible web on a roller in a machine or tribosystem that conveys web materials. Flexible webs such as plastic sheeting, paper, elastomers, metal foils, and cloth are often transported in manufacturing processes by combinations of driving and idler rollers. The friction characteristics of the web/roller interface often affects the web transport process. If the web/roller friction is too low, the web can slip on the rollers and be damaged or damage the roller. High friction on the other hand, can lead to steering problems and overloading of driving motors.5.2 This test method can be used to rank rollers for their ability to resist slip versus a particular web material (high friction). Conversely this test method can assess web materials or web surface coatings such as waxes and lubricants. In this latter case, the goal may be a low-friction product made from a web (film, magnetic media, paper, and so forth).5.3 If a tribosystem involves transport of a flexible web on a roller, this is an appropriate test to use to measure the friction characteristics of the roller/web couple.1.1 This test method covers the simulation of a roller/web transport tribosystem and the measurement of the static and kinetic coefficient of friction of the web/roller couple when sliding occurs between the two. The objective of this test method is to provide users with web/roller friction information that can be used for process control, design calculations, and for any other function where web/roller friction needs to be known.1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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