S7 1200 WEBSERVER

giants · 1 May 2022

Hi there!

i'm new in the forum. I start to work with S7 1200 CPU1214AC/DC/RLY firmware 4.4 i create my HTLM pages and download in to PLC. Everything work well i can read dat from DB or tags but if i try to write from my HTML dose't work. I find on line a tutorial from SIEMES i copy a couple of examples but dosen't work i use a password but nothing. If i modify the variable from the SIEMENS page gave me when i type the IP i can change the variable.

Please some one can help me because i diden't know what my problem is

Thank you soo much

Sergio

slcman · 30 Jun 2022

Have you declare your variable with awp in you web page?
In your plc, the tag checkbox Visible in HMI engineering must be checked.

Here is a demo web page which include few write option. Just cut/paste in a text file, rename it *.html

regards

<!DOCTYPE html>
<html lang="en">
<head>
<!-- Web page must use utf-8 charct set -->
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<link rel="stylesheet" href="styles/MainStyle.css" />
<link rel="stylesheet" href="styles/Write.css" />
<script src="scripts/MainFunction.js"></script>
<script src="scripts/PLCTagFunction.js"></script>

<title>Siemens 1200 web demo</title>

<!-- this block is used in case of internet explorer version <9 is used. Only v9 include HTML5 -->
<!--[if lt IE 9]>
		<script type="text/javascript">
	    document.createElement("header")
		document.createElement("footer")
		document.createElement("section")
		document.createElement("aside")
		document.createElement("nav")
		</script>
		<![endif]-->
		
</head>

<body>
<header>
	<img src="images/Unit.jpg" alt="S7-200 unit" />This is a <b>SIEMENS</b> 1200 demo.</header>
<hr>


<div id="MainDiv">
	<h4>Different syntax could be use for read and write variable</h4>
	Counter value is :=MW102:<br>
		<!-- *************** Use push button as variable input************* -->
	<!-- AWP_In_Variable Name="bResetPB" -->
	<form method="post">
		<input name="bResetPB" type="hidden" value=1>
		<input id="ResetOnePB" type="submit" value="Reset counter">
	</form><br/>
	
	<!-- *************** Use select list as variable input ************** -->
	<!--  AWP_In_Variable Name="bResetPB" -->
	<form method="post">
		<select name="bResetPB">
			<option value=1>Reset to zero</option>
			<option value=0>Do not reset</option>
		</select>
		<input type="submit" value="Send request">
	</form><br/>
	
	<!-- *************** Use radio pb as variable input *************** -->
	<!--  AWP_In_Variable Name="bResetRequest" [Use="bResetPB"] -->
	<form method="post">
		<label for="bResetRequest">Do you want to reset counter?</label>
		<input type="radio" name="bResetRequest" value="1" checked="checked">yes
		<input type="radio" name="bResetRequest" value="0">no<br/>
		<input type="submit" value="Send request"/>
	</form><br/>
	
	<!-- *************** Use text for enter numeric value *************** -->
	<!-- CSS style is applied to input field for validate numeric value
	<!-- AWP_In_Variable Name="iSpeed" -->
	<form id="NumFieldForm" method="post">
		<label for="iSpeed">Speed reference: </label>
		<input name="iSpeed" type="number" min="10" max="1800" step="10" value="900" title="enter a value between 10 and  1800." required> RPM<br/>
		<input type="submit" value="Send new speed">
	</form><br/>
	
	<form id="NumFieldFormwText" method="post">
		<label for="iSpeed">Speed reference: </label>
		<input name="iSpeed" type="text" value=":=MW100:" required> RPM<br/>
		<input type="submit" value="Send new speed">
	</form><br/>
	
	<!-- *************** Use cursor for enter numeric value *************** -->
	<!-- AWP_In_Variable Name="iSpeed" -->
	<form method="post">
		<label for="iSpeed">Speed reference: (:=MW100:) </label>
		<input name="iSpeed" type="range" min="10" max="1800" value=":=MW100:">
		<input type="submit" value="Send new speed">
	</form>
</div>

<footer>
	Snapshot take at <script>WriteDate();</script>
	<div id="FooterDiv">
		Created by slcman
	</div>
</footer>
<script>PageLoad()</script>
</body>
</html>

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S7 1200 WEBSERVER

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