Fieldbus Process Image
There are two types of configuration on the BX Controller. You can read which of these two is active on the display of the BX after it has booted.
Default Config
The fieldbus data is located in the Default Config, starting from address 1000. (%IB1000... and %QB1000).
TwinCAT Config
In the TwinCAT Config, fieldbus data is not bound to specific addresses, but has a location that depends on how it has been linked.
The fieldbus process image is independent of which Ethernet protocol is in use.