I am working in a project of PLC programing with web interface. Idea is to control the production process through the web page .So i used couple of boolean input and output in my web page.I need to get the Analog sensor value from PLC to my web page ...I give thze following code in .Please give correction

<script type="text/javascript"> $(document).ready(function(){ $.ajax({ cache: false }); setInterval(function() { $.getJSON("IO_ims3_1.html", function(data) { if(data.sen5 >=0) { var output = document.getElementById("sensor5"); output.innerHTML = this.value; } else{document.getElementById("sensor5").style.backgroundColor = "black";} }); },1000); }); </script>