Frequently asked questions about IO-Link

IO-Link is a point-to-point communications standard for automation technology. IO-Link permits integrated communication at all levels, from sensors and actuators through superordinated controllers (PLCs) and beyond to the control level. An intelligent field device can transmit data about its status, energy consumption, and the process via this interface. At the same time, parameters of the controller may be modified and then transferred to the product.

The intelligent field device is both supplied with power and integrated into the system via the IO-Link connection. The device is connected to the so-called IO-Link master via the IO-Link cable and from there is connected to the controller. This substantially reduces the cost of cabling in the system. Parameterization of the devices is saved in the superordinate automation system. If a field device is exchanged, the previous parameters can be transferred to it quickly via IO-Link.

The IO-Link master and the field device are connected by an unshielded three-core cable that is at most 20 meters long.

A system can be comprised of multiple IO-Link devices. Each device is connected to the IO-Link master. The master provides the interface to the superordinate controller and controls the communication between connected IO-Link devices.

The data can be stored in either external or company-internal clouds.

The following products are equipped with an IO-Link interface: