IEC TR 63164-2:20 20提供了自动化系统可靠性数据的计算指南，自动化系统可以基于单个设备和/或子系统的可靠性数据简化为串联、并联或混合结构，以及呈现数据的形式。 注意:本程序仅针对自动化系统的可靠性，而不是嵌入自动化系统的系统，如加工厂。 可靠性包含在可靠性中，本文档主要关注影响可靠性的随机硬件故障。可靠性被用作项目与时间相关的质量特性的统称，还包括可用性、可恢复性、可维护性、维护支持性能，以及在某些情况下的其他特性，如耐久性、安全性和安全性，所有这些都不在本技术报告的范围内。

IEC TR 63164-2:2020 provides guidance on the calculation of reliability data of automation systems which can be simplified as series, parallel or mixed structure based on reliability data of single devices and/or sub-systems, and on the form to present the data.
NOTE This procedure is only targeted to the reliability of automation systems, but not systems that embed automation systems, e.g. process plant.
Reliability is included in dependability, and this document is mainly focused on random hardware failures that affect reliability. Dependability is used as a collective term for the time-related quality characteristics of an item and additionally includes availability, recoverability, maintainability, maintenance support performance, and, in some cases, other characteristics such as durability, safety and security, which are all not in the scope of this Technical Report.