Multi-protocol capability

Further important criteria for a fieldbus system that is to support drive technology are the communications protocol and profile used, which are responsible for compatibility and efficient data exchange between the controller and the drive. Instead of re-inventing the wheel, EtherCAT uses proven technology for this purpose.

None of the available protocols on their own support all communication requirements of modern field busses (process data, parameter data, parallel TCP/IP, firmware updates, routing to subordinate bus systems, etc.). EtherCAT therefore introduces multi-protocol capability, consolidating the different protocols in a standardized mailbox. This enables quick and full conversion of existing devices to EtherCAT.

The CANopen over EtherCAT (CoE) and Servo Profile over EtherCAT (SoE) protocols are relevant for drive technology; they make it possible to combine the advantageous transmission properties of EtherCAT with proven, profile-specific drive functions.

The Ethernet over EtherCAT (EoE) and File Access over EtherCAT (FoE) protocols provide options for integrating a web server in the drive, for example, or for efficiently exchanging firmware or cam plate tables via the bus.