Versions Compared

Old Version 2

changes.mady.by.user Nahel Falhout

Saved on

compared with

New Version 3

changes.mady.by.user Nahel Falhout

Saved on

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

Description

This example shows the how to write or read to any XCON(TCP/UDP) connection. The connection can be handled with LUA function. The write value can be written from any selected item, and the read value also be written to an output item.
The Read function should handle the incoming values and convert them to their HEX values. 
This tutorial has two functions: 

...

Code Block
languageactionscript3
titleLUA 

function Send_TcpHex()OnStartEvent() --this is a predefined function, add only the following lines to the function.

local var = nxa.GetValue('NETx\\VAR\\String\\Item001')
xcon.CreateTCP("MyTCP","0",0,"127.0.0.1",23)
end


function Send_TcpHex()
xcon.SendHex("MyTCP", var)
end


function MyTCP_OnReceiveEvent(data, size, sourceip, sourceport)
local val= string.tohex(data)
nxa.SetValue('NETx\\VAR\\String\\Item002',val)
end

function string.tohex(str)
    return (str:gsub('.', function (c)
        return string.format('%02X', string.byte(c))
    end))
end

...