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Appendix | EtherCAT Documentation
optoNCDT 1900 / EtherCAT
A 5
EtherCAT Documentation
A 5.1
General
EtherCAT® is, from the Ethernet viewpoint, a single, large Ethernet station that transmits and receives Ethernet telegrams. Such an
EtherCAT system consists of an EtherCAT master and up to 65535 EtherCAT slaves.
Master and slaves communicate via a standard Ethernet wiring. On-the-fly processing hardware is used in each slave. The incoming
Ethernet frames are directly processed by the hardware. Relevant data are extracted or added from the frame. The frame is then sent
on to the next EtherCAT® slave device. The completely processed frame is sent back from the last slave device. Various protocols
can be used in the application level. CANopen over EtherCAT technology (CoE) is supported here. In the CANopen protocol, an
object tree with Service Data Objects (SDO) and Process Data Objects (PDO) is used to manage the data. Further information can be
obtained from ® EtherCAT Technology Group (www.ethercat.org) or Beckhoff GmbH, (www.beckhoff.com).
Summary of Contents for ILD1900-10
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