Delta PLC’s provide several solutions for all popular fieldbus.
With this communication modules we can cover the three levels of communication:

For Device Control: Modbus RTU/ASCII, PLCLink, etc..
For Data Exchange: DeviceNet, CANOpen, Profibus-DP.
For Data Collection: Ethernet Modbus TCP/IP, Ethernet IP.

To help you to choose what is going to be the best choice, we advise you to take a look to the next presentation provided by Mr. Johnny Hsu.

DVP Network modules presentation