This article explains how the virtual fieldbus can be used to exchange data between Simulink models.
This article explains how to write/read registers from an external fieldbus in Simulink.
A short introduction on the configuration of Beckhoff ELxxxx modules
How to configure a MODBUS server fieldbus on a Triphase realtime target.
How to configure a MODBUS client fieldbus on a Triphase realtime target.