HomeLynk as Modbus TCP/IP slave

[Mirco]

I have a problem with the script..
I have 2 LM:
LM1 is the one with this script https://openrb.com/lm-as-modbus-tcp-slave
LM2 is the one that need to read LM1

When I try to read with LM1 my LM2, LM2 return tis error:  LM (TCP 192.168.1.91:502) read failed: Illegal data address

The profile in LM2 is this:

Code:

{
"manufacturer":"LM",
"description":"LM",
"mapping":[
{"name":"Reg1", "bus_datatype": "int16", "datatype": "uint16", "type": "register", "address": 0, "writable": true},
{"name":"Reg2", "bus_datatype": "int16", "datatype": "uint16", "type": "register", "address": 1, "writable": true},
{"name":"Reg3", "bus_datatype": "int16", "datatype": "uint16", "type": "register", "address": 2, "writable": true},
{"name":"Reg4", "bus_datatype": "int16", "datatype": "uint16", "type": "register", "address": 3, "writable": true},
{"name":"Reg5", "bus_datatype": "int16", "datatype": "uint16", "type": "register", "address": 4, "writable": true},
{"name":"Reg6", "bus_datatype": "int16", "datatype": "uint16", "type": "register", "address": 5, "writable": true},
{"name":"Reg7", "bus_datatype": "int16", "datatype": "uint16", "type": "register", "address": 6, "writable": true}
]
}

and the script in LM1 is:

Code:

if not mb then
  require('genohm-scada.eibdgm')
  require('luamodbus')

  -- Elenco mappature bobine, a partire da 0
  coils = { '1/1/1' }

  -- Elenco mappature dei registri, a partire da 0
  registers = { "1/2/0", "1/2/3", "1/2/4", "1/2/9", "1/2/14", "1/2/16", "33/0/1" }

  -- Elenco tipo di dati del registro, il conteggio degli elementi deve corrispondere alla tabela dei registri
  regdt = { dt.uint16, dt.uint16, dt.uint16, dt.uint16, dt.uint16, dt.uint16, dt.uint16 }

  -- Richiamo in scrittura del gr. KNX
  function knxgroupwrite(event)
    local value

    -- Prova a trovare la bobona corrispondente
    for id, addr in ipairs(coils) do
      if event.dst == addr then
        value = knxdatatype.decode(event.datahex, dt.bool)
        mb:setcoils(id - 1, value)
      end
    end

    -- Prova a trovare il registro corrispondente
    for id, addr in ipairs(registers) do
      if event.dst == addr then
        value = knxdatatype.decode(event.datahex, regdt[ id ])
        mb:setregisters(id - 1, value)
      end
    end
  end

  -- richiama bobina in scrittura
  function mbwritecoils(coil, value)
    local addr = coils[ coil + 1 ]
    if addr then
      grp.write(addr, value, dt.bool)
    end
  end

  -- registra la chiamata in scrittura
  function mbwriteregisters(register, value)
    local addr = registers[ register + 1 ]
    if addr then
      grp.write(addr, value, regdt[ register + 1])
    end
  end

  -- knx group monitor, gestisce le scritture di gruppo
  knxclient = eibdgm:new({ timeout = 0.1 })
  knxclient:sethandler('groupwrite', knxgroupwrite)

  -- modbus slave, ascolta su tutte le interfaccie e porte default 502
  mb = luamodbus.tcp()
  mb:open('0.0.0.0', 502)

  -- Impostazione Slave (Facoltativa)
  --mb:setslave(1)

  mb:setreceivetimeout(0.1)
  mb:setmapping(#coils, 0, #registers, 0)

  -- Inizializza bobine
  for id, addr in ipairs(coils) do
    value = grp.getvalue(addr)
    mb:setcoils(id - 1, value)
  end

  -- Inizializza registri
  for id, addr in ipairs(registers) do
    value = grp.getvalue(addr)
    mb:setregisters(id - 1, value)
  end

  -- set callbacks for coil and register write
  mb:setwritecoilcb(mbwritecoils)
  mb:setwriteregistercb(mbwriteregisters)
end

-- Gestione modbus e KNX
mb:handleslave()
knxclient:step()

can someone help me?