IEC 60870-6-503:2014规定了一种使用完全符合ISO的协议栈通过广域网和局域网交换时间关键控制中心数据的方法。它包含支持集中式和分布式架构的规定。该标准包括实时数据指示、控制操作、时序数据、调度和核算信息、远程程序控制和事件通知的交换。与上一版相比，此新版本包括以下重大技术变更: -某些物体提供了信息； -使与信息对象相关联的服务具有信息性； -某些TASE.2一致性块超出范围。

IEC 60870-6-503:2014 specifies a method of exchanging time-critical control centre data through wide-area and local-area networks using a full ISO compliant protocol stack. It contains provisions for supporting both centralized and distributed architectures. This standard includes the exchange of real-time data indications, control operations, time-series data, scheduling and accounting information, remote program control and event notification. This new edition includes the following significant technical changes with respect to the previous edition:
- certain objects were made informative;
- services associated with the informative objects were made informative;
- certain TASE.2 conformance blocks were made out-of-scope.