Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Real Time Data on Web Server

Real Time Data on Web Server

Real Time Data on Web Server

I am using an industrial interface controller that contains real time data such as flow rates and pressures. I am new to web development and this interface is also a web server. I am able to display the data using SSI and CGI commands in the web pages I create on the server. I'm using commands like: "Flow Rate = <!--#exec cgi="/get_device.fn D101"--> GPM" but the only way I've been able to display updated data is to do an auto-refresh of the page. Very inefficient. Is there a more efficient way I can display this data as a real time component?


RE: Real Time Data on Web Server

By auto-refresh do you mean kick off a timer which then does the refresh for you?

Have a look at AJAX on the web - it is a technique that will enable components on the form to be updated without the whole form being updated.

RE: Real Time Data on Web Server


There are java (not javascript) applets out there that
will continuously update the display.  I don't have much
experience with them, so I will not comment on their use.

For me, I've been able to do an auto refresh from the
<meta> statement that will update it in real enough time
for my applications.  Usually 10-15 seconds is close
enough for my use.

Let us know what you come up with. I'm sure that there
will be plenty of interest in your solution.


   Rich S.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close