LM as a Modbus slave : number of slaves

[SigmaTec]

You're missing a part of the slave script. It should have at least 35 lines, you've posted only 21.

yes, it was only the first lines...
Here is full !

Code:

if not mb then
  require('luamodbus')
  mb = luamodbus.tcp()
 
  res, err = mb:open('0.0.0.0', 502)
  log("mb:open :",res,err)
  res, err = mb:setslave(2)
  log("mb:setslave :",res,err)
 
  log("Modbus slave IN : 502/2")
  function setint64(grpaddr, regaddr)
    local value = grp.getvalue(grpaddr) or 0
    local raw = knxdatatype.encode(value, dt.int64).dataraw
    local r1 = raw:byte(2) * 0x100 + raw:byte(1)
    local r2 = raw:byte(4) * 0x100 + raw:byte(3)
    local r3 = raw:byte(6) * 0x100 + raw:byte(5)
    local r4 = raw:byte(8) * 0x100 + raw:byte(7)

    res, err = mb:setregisters(regaddr, r4, r3, r2, r1)
    log("mb:setregisters :",res,err)
  end

  function updateregisters()
    setint64('0/0/14', 3204)
  end

  mb:setmapping(0, 0, 3300, 0)
  updateregisters()
 
  prev = os.time()
end

mb:handleslave()

curr = os.time()
if curr ~= prev then
  updateregisters()
  prev = curr
end
log("Modbus slave OUT : 502/2")