Updating Controller Firmware *.Efw - Beckhoff EL6751 Documentation

Appendix
7.3.3

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. 147: Firmware Update
Proceed as follows, unless instructed otherwise by Beckhoff support. Valid for TwinCAT 2 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.
182 Version: 3.5 EL6751