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from the Automation List department...
Allen Bradley + MODBUS/RTU
Communications systems and equipment. topic
Posted by Alejandro on 17 November, 2007 - 1:09 am
My company owns some asphaltic plants. One of them is equipped with WEG's Soft-Starters and Frequency Inverters. They are connected by MODBUS/RTU.
I want to interface that network with our AB SLC 500 5/03.

My question is:
Is there any way to do that? Which products or devices should I need?

Thanks a lot.


Posted by Pablo H. Halperin on 17 November, 2007 - 10:11 pm
Alejandro:

Try Prosoft.

You can find what you need at
http://www.prosoft-technology.com/content/view/full/5757.

Regards and good luck !
Pablo


Posted by Tom Tran on 17 November, 2007 - 10:12 pm
Alejandro,

You can have a Prosoft 3150 MCM module installed in the SLC rack. It is a programmable commonly used for A-B PLCs to interface with Modbus devices.


Posted by Roy on 17 November, 2007 - 10:12 pm
Alejandro,
Check out the "Prosoft" module, these slot into AB racks and have AB approval.
I just used one and it seems to have lots of features including a sample program to get you started. The one I have has 2 ports that can be RS-232, 422 or 485 Master or Slave.

Regards
Roy


Posted by David on 17 November, 2007 - 10:13 pm
Prosoft is an Allen Bradley 'partner', specializing in communications modules.

http://prosoft-technology.com/

Naviogate from their home web page navigation bar on the left to
products > for Rockwell Automation > platform > SLC > scroll down to either
Modbus RTU/ASCII Master/Slave Communication Module MVI46-MCM, or

Modbus TCP/IP Client/Server Communication Module MVI46-MNET

David


Posted by Alejandro on 20 November, 2007 - 12:37 pm
It seems you are right!

This product is what I need. I'll get in touch with ProSoft.

Thanks a lot.


Posted by Eddie Willers on 17 November, 2007 - 10:13 pm
The most common and straightforward way to interface A-B controllers and Modbus network devices is chassis-mounted modules from Prosoft.

You want the MVI46-MCM module for Modbus RTU over serial links.


Posted by Jerry Miille on 20 November, 2007 - 12:22 pm
You could use our Omnii-Comm product for this application. It is very easy to use and requires no PLC programming. Please have a look at these two links, one for a slot-mounted unit
http://www.miille.com/166-20X.pdf and another for a stand alone, DIN rail mounted converter
http://www.miille.com/din266-p00.pdf.

Either will solve your problem.

If you have further questions, please contact us at sales@miille.com

Thanks.

Jerry Miille

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