S7 - 1500 Webserver

Hi, 
I've created a webserver page lately, and I have some problems now. I would like to use few buttons for setting and resetting physical outputs.
At the beginning of html code I've wrote the statement for each output:
<!-- AWP_In_Variable Name='"Q1"' -->
<!-- AWP_In_Variable Name='"Q2"' -->
<!-- AWP_In_Variable Name='"Q3"' -->

and few lines below I have written code for each of this variable:

So everything should work properly, but it doesn't. Q1 output works, but the other ones aren't. After I press button at webpage, address is changed and it is written at the end of link that "Q2=1" but in PLC nothing happens and Q2 is still 0. What am I doing wrong? 

Where else in the PLC are Q2 & Q3 being written? 

siwy1234

Hi, 
I've created a webserver page lately, and I have some problems now. I would like to use few buttons for setting and resetting physical outputs.
At the beginning of html code I've wrote the statement for each output:
<!-- AWP_In_Variable Name='"Q1"' -->
<!-- AWP_In_Variable Name='"Q2"' -->
<!-- AWP_In_Variable Name='"Q3"' -->

and few lines below I have written code for each of this variable:

<form>

<input type="submit" value="Set Q1">

<input type="hidden" name='"Q1"' value="1">

<input type="submit" value="Reset Q1">

<input type="hidden" name='"Q1"' value="0">

</form>

<form>

<input type="submit" value="Set Q2">

<input type="hidden" name='"Q2"' value="1">

<input type="submit" value="Reset Q2">

<input type="hidden" name='"Q2"' value="0">

</form>

<form>

<input type="submit" value="Set Q3">

<input type="hidden" name='"Q3"' value="1">

<input type="submit" value="Reset Q3">

<input type="hidden" name='"Q3"' value="0">

</form>

So everything should work properly, but it doesn't. Q1 output works, but the other ones aren't. After I press button at webpage, address is changed and it is written at the end of link that "Q2=1" but in PLC nothing happens and Q2 is still 0. What am I doing wrong? 

 Hi ,

     When you use an button with submit type you need delare a method type to this form (GET or POST) and is not usually configure a lot of submit buttons to the same form.

      Search about AJAX (XmlHttpRequest) to send command from page to webserver , this is one way to do this.

      Other way to do the same thing is use JQuery and a S7 Framework (Javascript Library developer to Siemens Team)  you will find detailed steps in this application exemple:

Exemple Webserver - S7 1200 and S7 1500

Regards,   

siwy1234

Hi, 
I've created a webserver page lately, and I have some problems now. I would like to use few buttons for setting and resetting physical outputs.
At the beginning of html code I've wrote the statement for each output:
<!-- AWP_In_Variable Name='"Q1"' -->
<!-- AWP_In_Variable Name='"Q2"' -->
<!-- AWP_In_Variable Name='"Q3"' -->

and few lines below I have written code for each of this variable:

<form>

<input type="submit" value="Set Q1">

<input type="hidden" name='"Q1"' value="1">

<input type="submit" value="Reset Q1">

<input type="hidden" name='"Q1"' value="0">

</form>

<form>

<input type="submit" value="Set Q2">

<input type="hidden" name='"Q2"' value="1">

<input type="submit" value="Reset Q2">

<input type="hidden" name='"Q2"' value="0">

</form>

<form>

<input type="submit" value="Set Q3">

<input type="hidden" name='"Q3"' value="1">

<input type="submit" value="Reset Q3">

<input type="hidden" name='"Q3"' value="0">

</form>

So everything should work properly, but it doesn't. Q1 output works, but the other ones aren't. After I press button at webpage, address is changed and it is written at the end of link that "Q2=1" but in PLC nothing happens and Q2 is still 0. What am I doing wrong? 

To enhance the last post, this link may help explain what they are saying:

https://www.w3schools.com/html/html_forms.asp

This site is very good at explaining how to use html in general to perform specific tasks.

That site combined with the s7-1500 webserver usage help should help you jump start your html pages.

hey guys, 

the problem is much more easier... 

 Hi , Bastian.Geier 

   Submit form without declare an http verb ?

Regards,

Bastian.Geier

hey guys, 

the problem is much more easier... 

 

<form>

<input type="submit" value="Set Q1">

<input type="hidden" name='"Q1"' value="1">

</form>
<form>

<input type="submit" value="Reset Q1">

<input type="hidden" name='"Q1"' value="0">

</form>

you need to split your forms, otherwise you transmit always true and false where false ist the last statement and the on the plc is using ;-)

hi,

yes that should work anyway as default action is post and default URL is the one, where the form is placed.

of course you are right, the syntax is not valid HTML - but the browser are more or less "intelligent" to solve such invalid syntax by using the default values....

https://developer.mozilla.org/en-US/docs/Learn/HTML/Forms/Your_first_HTML_form

Regards