Modbus via Ethercat (Beckhoff)

Hi, I am just on the way to start my ethercat adventure.
I received my ethercat servos and some beckhoff ethercat interfaces as well.
Now i recognize that I still need something to control my Optidrive E3 VFD over modbus.
Can I use the El6001 Serial Interface or wich Interface do I need?

I would really appreciate any help or hint

best Kai

Many of us use a USB to RS485 converter plus the mb2hal or vfdmod hal module.

So it`s not going over ethercat? Didn`t think about this possibility yet. Thx a lot for the hint!

This module, I have previous usage experience on other platforms. In principle, it can be used without any problem, but it depends on how you call the corresponding registers. This module is very easy to use. All you need to do is to send data according to the standard MODBUS template.

From what I read the EL6021 could perhaps work. Ethercat master will create a virtual serial port over which modbus is communicating.
IgH Ethercat master supposedly supports virtual serial ports when compiled with the right option. But I have no idea of how to set this up in linuxcnc context. I mean it will be a virtual serial port so the standard mb2hal etc are used, but to set up the virtual serial port?.

Thx for your help!
You mean the EL6001? The lasting question would be how to tell ethercat to send the modbus data via the module. As an absolute newbie to ethercat and Linuxcnc it seems to be a very steep learning curve.