Read (dutch) smart meter with ser2net

[mischa]

I want to read the dutch smart meter, the p1 meter script is perfect for that. 
but the only thing is the my LM is not near the smart meter.

I have a raspberry-pi next to the smartmeter with ser2net installed. how can I change this part of the script to use the ser2net?

Code:

lastchar = '!'

require('serial')
port = serial.open('/dev/ttyUSB0', { -- Let op type van de slimme meter voor de onderstaande instellingen.
  baudrate = 9600,             --DSMR 2/3 = 9600        DSMR 4 = 115200
  databits = 7,                    --DSMR 2/3 = 7            DSMR 4 = 8
  stopbits = 1,                    --DSMR 2/3 = 1            DSMR 4 = 1
  parity = 'even',            --DSMR 2/3 = even        DSMR 4 = none
  duplex = 'full'
})


function readdata(port)
  local char, buf

  buf = {}

  while true do
    char = port:read(1)
    -- error (timeout) or newline, stop
    if char == nil or char == lastchar then
      break
    -- ignore cr char
    elseif char ~= '\r' then
      table.insert(buf, char)
    end
  end

  return table.concat(buf)
end

data = readdata(port)
port:flush()

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Thanks,

Mischa