采用IEC 61131-9，Ed.1.0（2013），其中规定了小型传感器和执行器（SDCI）（通常称为IO链路）的单点数字通信接口技术，将IEC 61131.2中定义的传统数字输入和数字输出接口扩展到点对点通信链路。该技术能够将参数传输到设备，并将诊断信息从设备传输到自动化系统。

Adopts IEC 61131-9, Ed. 1.0 (2013), which specifies a single-drop digital communication interface technology for small sensors and actuators (SDCIs) (commonly known as IO-Link), which extends the traditional digital input and digital output interfaces as defined in AS IEC 61131.2 towards a point-to-point communication link. This technology enables the transfer of parameters to Devices and the delivery of diagnostic information from the Devices to the automation system.