The CANopen communication profile is documented in CiA301. It differentiates between Process Data Objects (PDOs) and Service Data Objects (SDOs). The Communication Profile additionally defines a simplified network management system. Based on the communication services of CiA 301 (Rev. 4.01) the device profile for variable-speed drives CiA 402 was created. It describes the operation modes and device parameters supported.
For EtherCAT communication CoE (CAN over EtherCAT) is used. In this, the EtherCAT real-time protocol is used as the transport system for another protocol. Other commonly used variants alongside CoE are SoE (Servodrive-Profile over EtherCAT), EoE (Ethernet over EtherCAT) and FoE (File Access over EtherCAT). EtherCAT features real-time capability, fast sampling times and exact synchronization based on the principle of distributed clocks in the slave devices.
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NOTE: For a detailed description of the CANopen field bus system refer to the separate "CANopen User Manual" and "CANopen EtherCAT User Manual". |
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Attention:
"EtherCAT® is a registered trademark and patented technology licensed by Beckhoff Automation GmbH, Germany." |
Copyright © LTi DRiVES GmbH, Januar 2013, ID-Nr.: 0842.26B.1-00 DE
