AKD EtherCAT | 3 Installation and Setup
When releasing the EoE feature, the biggest allowed mailbox size has been increased from
512 to 1024 byte. A larger mailbox means fewer Mailbox transfers, resulting in a performance
increase.
Furthermore an additional Fieldbus Memory Management Unit (FMMU) has been added. This
allows the master to be notified of new data in the mailbox input without the need to poll the
mailbox, leading to a decrease in reaction time, thus improving performance. If your master
does not support this, you should at least try to decrease the period in which the master polls
the drive’s mailbox.
3.6.5 Restrictions
l
Since a firmware download restarts the drive in the resident firmware, which does not sup-
port Ethernet over EtherCAT, downloading firmware via EoE is not possible. To update
your drive’s firmware use FoE instead.
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If your EtherCAT master uses the device description provided in the esi-file and you want
to automatically detect your drives, set the keyword ECAT.LEGACYREV to 0. The drive
will then report a different revision number and will be recognized by the master as a
device capable of Ethernet over Ethercat.
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Kollmorgen | kdn.kollmorgen.com | October 2017
