Standardized IO-Link technology (IEC 61131-9) simplifies and economizes communication with sensors and actuators. This low-cost connection technology, developed through evolutionary advancements, utilizes three or five conductors for point-to-point connections, minimizing wiring complexity and material use.
IO-Link serves as a point-to-point communications interface that enhances fieldbus and Industrial Ethernet systems. It enables the transmission of process data, downloading parameter data from the control system to devices, and sending diagnostic information back. Previously, integrating a fieldbus interface down to the lowest field level was costly; now, digital or analog values can be sent using a simple 3- or 5-wire cable without special screening or impedance requirements. The gateway between the fieldbus and IO-Link devices is typically a fieldbus module with multiple master channels. In smaller systems, the PLC can function as the master.
Software-supported parameterisation of intelligent sensors and actuators via the IO-Link master makes it extremely easy to set and reassign parameters. All description files are stored in the central IODD finder database. The automatic parameter assignment server function (data storage) following device replacement is an especially convenient feature.
The comprehensive exchange of diagnostic and operational data between device and master systems speeds up troubleshooting and forms the basis for condition monitoring systems.
An international, open and fieldbus-independent IO-Link standard supports existing and future connection concepts.
Uncomplicated wiring of the sensor-actuator combinations with standardized, unscreened cables reduces material costs, simplifies logistics and saves time.
More flexible communication thanks to standardization, from the control level to the field level, and compatible with Industry 4.0 host environments.
For simple control of remote I/O and IO-Link devices via fieldbus (EtherNet/IP, EtherCAT, PROFINET, or Modbus TCP), utilize the CPX-AP-I distributed I/O solutions. In this setup, the IO-Link master CPX-AP-I-4IOL manages multiple devices through an EtherCAT fieldbus.
Festo’s high-performance control system CPX-E features a 4-port master module for IP20 installations. The compact and robust CPX-AP-I remote I/O system also includes a 4-port master module for IP65/67 installations, enhancing actuator capabilities. The CECC controller with four IO-Link master ports enables efficient device management, reducing installation costs while offering valuable diagnostic options.
Economical and efficient installation
Low-cost standard cables and IO-Link for valve terminals instead of multi-pin plugs allow simple, decentralized diagnostic messages and offer distinct technical advantages, such as more flexible installation, improved energy chain feed-through, and optimum adaptation to humid or particularly harsh ambient conditions.
Secure processes and data transmission
Proportional pressure regulators VPPM or vacuum generators OVEM connected to the IO-Link master eliminate the need for screened analog cables, reducing interference risks. Parameterization and data storage occur within the master, facilitating seamless remote control after device replacement.
Easy integration of complex sensors
The uniform interface of IO-Link replaces multiple individual sensor connections, allowing the integration of position transmitters and parameterizable pressure and flow sensors at a lower cost.
Secure: valve terminals with type B ports
Festo’s valve terminals feature galvanically isolated power supplies for electronics and valves. They operate using the IO-Link V1.0 and V1.1 protocols, ensuring secure valve shutdowns after emergencies.
The benefits of Industry 4.0 and IO-Link
All fieldbus/Ethernet, AS-Interface, and IO-Link products serve as contributors to Industry 4.0, with a clear, machine-readable data structure. Festo provides a comprehensive IO-Link portfolio for integrated solutions, supporting modern automation systems.