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.

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.
  
• Switch EtherCAT Master to PreOP
  
• Switch slave to INIT (A)
• Switch slave to BOOTSTRAP
• Check the current status (B, C)
• Download the new *efw file (wait until it ends). A password will not be necessary usually.
  
• After the download switch to INIT, then PreOP
• Switch off the slave briefly (don't pull under voltage!)
• Check within CoE 0x100A, if the FW status was correctly overtaken.