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Sauna RS485 connection with LM
#7
Hi.

I get response timeout when running this script in wiser knx. is there any difference for RS-485 port?

I´ve tested this script over here and also with
This:
Code:
require('serial')

local port, errorMsg = serial.open('/dev/RS485', { baudrate = 57600, parity = 'none', duplex = 'half', databits = 8, stopbits = 1 })

-- Kontrollera om porten öppnades framgångsrikt
if not port then
    log("Kunde inte öppna porten: " .. (errorMsg or "Okänt fel"))
    return
end

port:flush()

-- Funktion för att läsa svar från bastun
local function readack()
  local line = {}

  while true do
    local char, err = port:read(1, 5)

    if char == nil then
      return nil, err
    elseif char == ';' then
      break
    else
      table.insert(line, char)
    end
  end

  return table.concat(line)
end

-- Kontrollera om bastun ska vara PÅ eller AV
local bastuState = grp.getvalue('37/1/1')
if bastuState then
    port:write('set sauna on\r')
else
    port:write('set sauna off\r')
end

-- Ställ in bastutemperaturen baserat på KNX-gruppadressen, värde mellan 30-110 grader
local temperature = grp.getvalue('37/1/3')
port:write('set sauna val ' .. temperature .. '\r')

-- Läs tillbaka värdet från bastun
port:write('get sauna val\r')

local res, err = readack()

if res then
    log("Sauna värde: " .. res)
    grp.checkwrite('37/1/0', res)  -- Skriver bastustatus till angiven adress
    grp.checkwrite('37/1/4', res)  -- Skriver tillbaka temperaturstatus till den nya gruppadressen
else
    log("Fel vid läsning av bastu värde: " .. (err or "Okänt fel"))
end

-- Stäng porten
port:close()
Anone who can see something wrong in this script?
Reply


Messages In This Thread
RE: Sauna RS485 connection with LM - by admin - 09.11.2018, 08:32
RE: Sauna RS485 connection with LM - by admin - 09.11.2018, 09:46
RE: Sauna RS485 connection with LM - by victor.back - 06.10.2023, 12:15
RE: Sauna RS485 connection with LM - by admin - 06.10.2023, 12:43
RE: Sauna RS485 connection with LM - by admin - 13.12.2023, 08:31
RE: Sauna RS485 connection with LM - by admin - 13.12.2023, 08:39
RE: Sauna RS485 connection with LM - by admin - 13.12.2023, 11:19

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