Appendix
EL500x160 Version: 3.6
6.3.3 Updating controller firmware *.efw
CoE directory
The Online CoE directory is managed by the controller and stored in a dedicated EEPROM, which
is generally not changed during a firmware update.
Switch to the Online tab to update the controller firmware of a slave, see Fig. Firmware Update.
Fig.164: Firmware Update
Proceed as follows, unless instructed otherwise by Beckhoff support. Valid for TwinCAT2 and 3 as
EtherCAT master.
• Switch TwinCAT system to ConfigMode/FreeRun with cycle time >= 1 ms (default in ConfigMode is 4
ms). A FW-Update during real time operation is not recommended.
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