NetworX (Interlogic) Gateway

[cgn]

I've a meter with a P1 port(=serial). To read the data is use this: 

Code:

lastchar = '!'

require('serial')
port = serial.open('/dev/ttyUSB1', {
  baudrate = 115200,             --DSMR 2/3 = 9600        DSMR 4 = 115200
  databits = 8,                    --DSMR 2/3 = 7            DSMR 4 = 8
  stopbits = 1,                    --DSMR 2/3 = 1            DSMR 4 = 1
  parity = 'none',            --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()

---------------------------------------------------------------

if data then
 
  AphA = data:match'31.7.0%((%d+.%d+)'
  AphA = tonumber(AphA) 
  grp.update('32/1/74', AphA)

-- "more code"

end