A 4 Ethercat Documentation; A 4.1 General; A 4.2 Switching Between Ethernet And Ethercat - MICRO-EPSILON interferoMETER Operating Instructions Manual

Appendix | EtherCAT Documentation
A 4 EtherCAT Documentation
A 4.1 General
EtherCAT® is, from the Ethernet viewpoint, a single, large Ethernet station that transmits and receives Ethernet tele-
grams. Such an EtherCAT system consists of an EtherCAT master and up to 65,535 EtherCAT slaves.
Master and slaves communicate via 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 from the frame or used
based on the frame. The frame is then sent on to the next EtherCAT® slave device. The last slave device sends back the
fully processed frame. Various protocols can be used on application
level. CANopen over EtherCAT technology (CoE) is supported here. The CANopen protocol uses an object tree with Ser-
vice Data Objects (SDOs) and Process Data Objects (PDOs) to manage the data. Further information can be obtained
from ® Technology Group (www.ethercat.org) or Beckhoff GmbH (www.beckhoff.com).
Fig. 76 Connecting the controller to the EtherCAT master
A 4.2 Switching between Ethernet and EtherCAT
You can switch between Ethernet and EtherCAT using an ASCII command ( see
Chap. 7.6.10) or an EtherCAT object ( see
switch becomes active only after the controller has been restarted.
EtherNET
The RS422 interface for sending an ASCII command is available both in Ethernet mode and in EtherCAT mode.
IMS 5x00
Chap. A
ASCII command
„ETHERMODE ETHERCAT"
„BASICSETTINGS Store"
„RESET"
ASCI command
„ETHERMODE ETHERNET"
Restart
„BASICSETTINGS Store"
Controller
„RESET"
or
EtherCAT-Objekt „21B0:03" on „False"
EtherCAT-Objekt „2020:02" on „True"
EtherCAT-Objekt „2101" on „True"
4.4.2.19). Save the current settings before switching to EtherCAT. The
Restart
Controller
Chap. A 3.3.6.4), the web interface ( see
EtherCAT
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