Possible to add multiple blocks of holding registers?

[githubadminGTI]

Hi,

I'm trying to have an Arduino Uno serve as a Modbus RTU server to simulate a device I need for work. I'd like to setup multiple holding register blocks but so far I'm not having any luck as I get the "illegal data address" error.

What I mean is that if I would like to read from holding registers 6, 254, 867, and 1023 then I can't get it to work just by running

   //Configure 1024 registers
  result = ModbusRTUServer.configureHoldingRegisters(0, 1023) ;
  if(result != 0)
  {
      Serial.println("Holding registers configured incorrectly!");
  }

//initialize the 1024 registers with the number of the register
for(int i = 0; i < 1024; i++)
{
    result =    result = ModbusRTUServer.holdingRegisterWrite(i, (uint16_t) i);
        if(result != 1)
        {
            Serial.println("Failed to write to the holding registers!");
          break;
        }
}

What would be the correct way to go about doing this?

Thank you!