×
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

Comunication between Staubli robots

Comunication between Staubli robots

Comunication between Staubli robots

(OP)
Hello, I'm writing and application under val3 language to manage the movement of 2 staubli robots (tx). I have problems when there is a shared place where only one robot at a time can go there. The comunication between the robots is not correct when I use a sio variable (ethernet) with one server and one client. I tried to make a simple case where if robot1 needs to go at the shared place it sends a 1 to the other and when the other needs to go there it sends a 2, so when the server (robot1 in this case) knows the place is empty (the variable related to the sio is at 0) it "gives" the place resource to itself or to robot2, puting that sio variable to 1 or 2.

This method is not correct because when one robot reads what the other sends him, the comunication have some kind of delay that makes the robots don't work properly about 60% of the time.

If someone have experience in comunication between two staubli robots in val3 I would be pleased to read his comments and if there is a better way to do this I will thank to know that a lot.
Thanks

RE: Comunication between Staubli robots

If you have I/O points available, it seems it would be much simpler, easier to debug, and more robust to connect at least one pair of hardwired signals between the two bots.  Set the signals based upon TCP coordinates in workspace.  For failsafe, set signal high when NOT in shared space.  Negotiate which bot goes first through clever programming.

TygerDawg

RE: Comunication between Staubli robots

Also, make sure you take into account race conditions.

Both robots could set and check the io at the same time and think that they had contol and then crash into each other.

I think you need more bits between the two machines.

RE: Comunication between Staubli robots

(OP)
Thanks to everyone, I've solved the problem, it was just a silly error in character they use to mark the end of the string in each communication.

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