GB/T 29910.6-2013 in English

《GB/T 29910.6-2013工业通信网络 现场总线规范 类型20：HART规范 第6部分：应用层附加服务定义和协议规范》由TC124（全国工业过程测量控制和自动化标准化技术委员会）归口，主管部门为中国机械工业联合会。
GB/T29910的本部分补充和扩展了GB/T29910.3、GB/T29910.4和GB/T29910.5定义的IEC现场总线类型20(HART和WirelessHART)通信网络的应用层服务定义和协议规范。本部分提供附加的HART和WirelessHART的应用层结构和服务元素。这些附加应用层结构和服务元素支持自动化环境中设备与应用程序之间“严格时间要求(time-critical)”和“非严格时间要求(non-time-critical)”
的报文通信。术语“严格时间要求”表示存在一个时间窗,在此时间窗内,要求以某个已定义的确定性等
级完成所要求的一个或多个规定动作。在时间窗内未完成规定的动作,会产生请求这些动作的应用失败的风险,甚至伴随造成仪器、设备和可能的人身危险。
本部分用来描述应用层服务和协议元素的公共概念和模板,详见IEC/TR61158-1:2010中第9章和本部分附录C和附录D。

Scope

This part of GB/T 29910 supplements and expands the application layer service definition and protocol specification of the IEC fieldbus type 20 (HART and WirelessHART) communication network defined in GB/T 29910.3, GB/T 29910.4 and GB/T 29910.5. This clause provides additional HART and WirelessHART application layer structure and service elements. These additional application layer structures and service elements support "time-critical" and "non-time-critical" messaging between devices and applications in an automation environment. The term "strictly timed" means that there is a time window within which one or more specified actions are required to be completed with a defined level of certainty. If the prescribed actions are not completed within the time window, there will be a risk of failure of the application requesting these actions, and even the accompanying damage to instruments, equipment and possible personal danger. This section is used to describe the common concepts and templates of application layer services and protocol elements. For details, see Chapter 9 of IEC/TR 61158-1:2010 and Appendix C and Appendix D of this section.