Modbus TCP/IP Code with extended Registers


I have been looking into the available Modbus codes for TCP/IP communication and have noticed that they use the standard register addresses (1-9999). Is there any code available for servers with extended addresses (1-65535)? Can this be modified in the codes that I have found?


Never mind, I started sending request codes to my Arduino+Ethernet Shield and modified the code accordingly to provide the required transmission signal.