RE: MODBUS TCP SLAVE AND RECEIVE

Code:
if not mb then

  require('luamodbus')

   

  mb = luamodbus.tcp()

  res, err = mb:open('0.0.0.0', 502)

  res, err = mb:setslave(2)

  log("Modbus slave IN : 502/2")

  

  function setintmo(grpaddr, regaddr)

    

    local value = grp.getvalue(grpaddr) or 0

    res, err = mb:setregisters(regaddr, value)

    

  end ------- setint(grpaddr, regaddr)



  function setintresgis (direc, regist)

          

       local valuer = mb:readregisters(regist)

    log (valuer)

    if valuer ~= nill then

       grp.write(direc, valuer)

      end

        

    end --- setintresgis (direc, regist) 

  

  

    function updateregisters()

    setintmo('32/1/2', 2) 

  end --- updateregisters()



    function updateinputregisters()

     setintresgis('32/1/4',10) 

    end

    

    

  mb:setmapping(100, 100, 100, 100)

  updateregisters()

  updateinputregisters()

  

end --- mb



mb:handleslave()



curr = os.time()

if curr ~= prev then

 updateregisters()

 updateinputregisters()

 log ('A')

  prev = curr



end