Re: B&R X20 Series PLC communication with Ignition over OPC-UA
1. Whether B&R Automation PLC X201583 is supported by Ignition.?
Not specifically, but it appears you can add a BC0087 module to add Modbus/TCP to your system.
2. If so how to configure the Device?...
That would be in the BC0087 Manual
...Which Driver shall I use?
The Modbus/TCP Driver
3. How to configure OPC-UA?
Here is the section on the Modbus/TCP Driver
in the Ignition user manual.