Appendix
EL3773172 Version: 2.5
8.3 Firmware compatibility
Beckhoff EtherCAT devices are delivered with the latest available firmware version. Compatibility of firmware
and hardware is mandatory; not every combination ensures compatibility. The overview below shows the
hardware versions on which a firmware can be operated.
Note
• It is recommended to use the newest possible firmware for the respective hardware.
• Beckhoff is not under any obligation to provide customers with free firmware updates for delivered
products.
Attention
Risk of damage to the device!
Pay attention to the instructions for firmware updates on the separate page [}161]. If a de-
vice is placed in BOOTSTRAP mode for a firmware update, it does not check when down-
loading whether the new firmware is suitable. This can result in damage to the device!
Therefore, always make sure that the firmware is suitable for the hardware version!
EL3773
Hardware (HW) Firmware (FW) Revision no. Release date
00 01 EL3773-0000-0002 2011/08
01 - 05* 02 EL3773-0000-0017 2012/09
03 EL3773-0000-0018 2012/10
04 2013/08
05 2013/08
06 EL3773-0000-0019 2013/09
07 2014/12
08 2015/09
09 EL3773-0000-0020 2016/05
EL3773-0000-0021 2016/10
10* 2017/07
*) This is the current compatible firmware/hardware version at the time of the preparing this documentation.
Check on the Beckhoff web page whether more up-to-date documentation is available.
Note on EL3773 firmware update
Note
Secondary voltage necessary for firmware updates
In order to change the firmware of the EL3773, the permissible operating voltages must be
applied both to the fieldbus side (E-Bus) and to the load side (power contacts), otherwise
the terminal remains in INIT_ERROR or cannot be switched to BOOTSTRAP mode.
8.4 Restoring the delivery state
To restore the delivery state for backup objects in ELxxxx terminals, the CoE object Restore default
parameters, SubIndex 001 can be selected in the TwinCAT System Manager (Config mode) (see Fig.
Selecting the Restore default parameters PDO)
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