IO-Link

IO-Link (IEC 61131-9) is an open standard serial communication protocol that allows for the bi-directional exchange of data from sensors and devices that support IO-Link and are connected to a master. The IO-Link master can transmit this data over various networks, fieldbuses, or backplane buses, making the data accessible for immediate action or long-term analysis via an industrial information system (PLC, HMI, etc.). Each IO-Link sensor has an IODD (IO Device Description) file that describes the device and its IO-Link capabilities.

It should be noted that IO-Link is not another fieldbus—but rather a point-to-point communication protocol between a compatible IO system and a field device. Because IO-Link is an open standard, devices can be integrated in virtually any fieldbus or automation system. 

There are many advantages of an IO-Link system including standardized and reduced wiring, increased data availability, remote configuration and monitoring, simple device replacement, and advanced diagnostics.

Together these capabilities result in:

●Overall reduced costs
●Increased process efficiency
●Improved machine availability