Beckhoff provides an extensive range of fieldbus components for all common I/O and fieldbus systems. The wide choice of I/O components means that the bus system best suited to the particular application can be chosen.
Suitable Beckhoff components depending on the fieldbus system
![EtherCAT](/media/pictures/tiles/products/i-o/ethercat-2.png)
EtherCAT
EtherCAT (Ethernet for Control Automation Technology) is the Ethernet solution for industrial automation, characterized by outstanding performance and particularly simple handling.
![Ethernet TCP/IP](/media/pictures/tiles/products/i-o/ethernet-tcp-ip.png)
Ethernet TCP/IP
The advantages of Ethernet, such as high data transmission rates, easy methods of integration into existing networks, and a wide range of services and interfaces are also found in the Beckhoff Ethernet products.
![PROFIBUS](/media/pictures/tiles/products/i-o/profibus.png)
PROFIBUS
PROFIBUS is widely used as a fast bus for decentralized peripheral components (PROFIBUS DP). In addition to PROFIBUS DP Beckhoff also supports the standard for drive communication, PROFIBUS MC.
![PROFINET](/media/pictures/tiles/products/i-o/profinet.png)
PROFINET
PROFINET is the open Industrial Ethernet standard of the PNO (PROFIBUS Nutzerorganisation).
![EtherNet/IP™](/media/pictures/tiles/products/i-o/eithernet-ip.png)
EtherNet/IP™
EtherNet/IP™ is the Industrial Ethernet standard of the ODVA (Open DeviceNet Vendor Association). It is based on Ethernet TCP/IP and UDP/IP.
![CANopen](/media/pictures/tiles/products/i-o/canopen.png)
CANopen
The effective utilization of the bus bandwidth allows CANopen to achieve a short system reaction time at comparatively low data rates.
![DeviceNet®](/media/pictures/tiles/products/i-o/devicenet.png)
DeviceNet®
DeviceNet® is a sensor/actuator bus system that originated in the USA, but meanwhile is increasingly being used in Europe and Asia. DeviceNet® is CAN-based (Controller Area Network).
![IO-Link](/media/pictures/tiles/products/i-o/io-link.png)
IO-Link
IO-Link serves to connect sensors and actuators to the control level by means of an inexpensive point-to-point connection. As an open interface, IO-Link can be integrated in all common fieldbus systems.
![Interbus](/media/pictures/tiles/products/i-o/interbus.png)
Interbus
Interbus is a sensor/actuator bus with low configuration expenditure. The summation frame protocol of this master/slave system offers high efficiency in cyclic communication.
![SERCOS](/media/pictures/tiles/products/i-o/sercos.png)
SERCOS
SERCOS was originally developed as a fast fiber-optic bus system for drives. Thanks to the Beckhoff SERCOS Bus Coupler, the advantages such as high data rate and short cycle times can now be provided for the I/O peripherals, too.
![CC-Link](/media/pictures/tiles/products/i-o/cc-link.png)
CC-Link
CC-Link (Control & Communication Link) is an open bus system for communication between the control and fieldbus level. It is predominately used in Asia.
![Modbus](/media/pictures/tiles/products/i-o/modbus.png)
Modbus
Modbus RTU is an open, serial communications protocol based on the master/slave architecture. Due to its open standards, Modbus TCP is common for the use of Ethernet in the fields of automation.
![RS232, RS485](/media/pictures/tiles/products/i-o/rs232-485.png)
RS232, RS485
The classic serial interfaces, RS232 and RS485, continue in wide use. The Beckhoff RS485/RS232 I/O modules use a simple, published serial communication protocol that is easy to implement.
![EnOcean®](/media/pictures/tiles/products/i-o/enocean.png)
EnOcean®
EnOcean® enables the battery-free transmission of switching signals and measured values and is mainly used in building automation.
![BACnet](/media/pictures/tiles/products/i-o/bacnet.png)
BACnet
BACnet (Building Automation Control Network) is a standardized, manufacturer-independent communication protocol for building automation.
![Further subsystems](/media/pictures/tiles/products/i-o/further.png)
Further subsystems
The integration of subsystems is possible using communication terminals.