×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

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

How to link data from PLC????

How to link data from PLC????

How to link data from PLC????

(OP)
I want to do a small size SCADA to communicate with PLC tought COM port by using VB. How to write the program in order to get the data from PLC by some scanning interval time.

RE: How to link data from PLC????

You might get a better responce in the PLC forum: Forum791

RE: How to link data from PLC????

I don't know why anyone woulf use PLC for robotics. PLC was
designed to facilitate relay logic which is 40 years behind
robotics.

<nbucska@pcperipherals.com>

RE: How to link data from PLC????

But it's simple and if you dont need very high speed and/or precision the job can be done with minimal mess and low cost also. By the way what tools You suggest for jobs like this?

RE: How to link data from PLC????

You need a DDE/OLE server to provide data to application. These range from $99 to $300. I like DSDDE from automationdirect. Using VB, it's fairly straightforward to connect to server and communicate your information. VB has many data-aware controls that will draw info from server readily. Writing to the server is fairly easy as well. Get the DSDDE from www.automationdirect.com for about $150 and you're in business.

RE: How to link data from PLC????

What kind of a PLC?

I have done a sample example using VB and Allen Bradley if that is relevant. Let us know what kind of PLC.

Chris Elston
Automation & Controls Engineer
http://www.mrplc.com
Download Sample PLC Ladder Logic Code
at MrPLC.com

RE: How to link data from PLC????

You can find many good examples in the material that comes with automationDirect's DSDDE server!

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


Resources

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