×
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

Modbus tcp redundancy path

Modbus tcp redundancy path

Modbus tcp redundancy path

(OP)
Hi

I have PLC which has to transfer some reading via modbus TCP IP to remote scada,

In my PLC I have only 1 RJ45 ,
But Scada guy wants 2 ethernet cables from me one as failover redundancy.
How can I do this with switch ??
Can someone suggest a switch model and technology required for this ?

Thanks

RE: Modbus tcp redundancy path

I do this all the time with our substation RTU that has two separate ethernet interfaces. Do you have the option of adding an additional communication interface to the PLC?

RE: Modbus tcp redundancy path

As thermionic1 said, can you add another ethernet interface to your RTU as an option? I would not add a switch, that would only add an additional point of failure which is the exact opposite of what the SCADA guy is trying to do. If you don't have a second RJ45 ethernet option, do you have a second fiber ethernet option? If no options exist just tell the SCADA guy and he will have to live with it.

RE: Modbus tcp redundancy path

Just assume the redundant path is permanently failed winky smile

Adding ANYTHING simply adds a point of failure, and since you've only a single ethernet interface, THAT is the choke point. On PCs you could possibly run an ethernet adaptor to an available serial or USB port.

TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! https://www.youtube.com/watch?v=BKorP55Aqvg
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers Entire Forum list http://www.eng-tips.com/forumlist.cfm

RE: Modbus tcp redundancy path

(OP)
hi all
i already bought very basic plc, cannto add extension ,

i want to do something with existing single RJ45 port

RE: Modbus tcp redundancy path

He needs 2 Ethernet connections.
He needs to add two Ethernet modules.

What PLC is it?

Keith Cress
kcress - http://www.flaminsystems.com

RE: Modbus tcp redundancy path

(OP)
Hi

I bought ilc 131 eco model phoenix contact

250$

RE: Modbus tcp redundancy path

(OP)
I have to buy again new

Now ILC131 for sale ,,,,,,,150$ ))))))))

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