Connecting to OPC for example is possible with the Softing OPC XML-DA Toolkit .
Connecting to AS-Interface, CANopen, DeviceNet, InterBus, Profibus, SERCOS for example is possible with Hardware from Hilscher . They use intelligent cards with a dual ported ram to interface to the host system. Drivers for Windows and Linux are available.
There is a good change, that other interfaces also will work.