Home » Categories » Protocols » Modbus

I am trying to use a ProSoft Modbus solution to send/receive data to a MSA Ultima X gas dectection system with Modbus interface and am having problems. How can I resolve this issue?
Article Number: 391 | Rating: 2/5 from 5 votes | Last Updated: Wed, Mar 9, 2011 at 2:38 PM

The MSA UltimaX gas detectors have a Modbus interface implementation that is within the limits of the Modbus protocol specifications but is somewhat different than more conventional Modbus communications implementations by other manufacturers.  Therefore, how you access data from the MSA UltimaX systems may seem a little odd, at first.

The User Manual provided by MSA does a good job of describing how they implement the Modbus protocol and how to address data registers within their system.  Please refer to their documentation for additional details.
Custom Fields
    Posted by: Administrator - Thu, Apr 24, 2008 at 12:42 PM This article has been viewed 22856 times.
    Filed Under: Modbus
    Attachments (0) Attachments
    There are no attachments for this article.
    Comments Comments
    There are no comments for this article. Be the first to post a comment.
    Icon Add Comment
    Name
    Email (Required, but not published)
    Comment
    Security Code Security Code
     
    Related Articles RSS Feed
    What Modbus address would we need to put into the MODSIM32 simulator if we specified on the MVI56-MCM device address to 8680HEX (-31104 decimal) when the MVI56-mcm is the slave?
    Viewed 1 times since Tue, Nov 28, 2006
    Defining the Slave ID when issuing Modbus Broadcast write commands
    Viewed 1 times since Tue, Nov 28, 2006
    How can I detect the feedback status of individual command successful or failed?
    Viewed 1 times since Wed, Nov 29, 2006
    Why is the bit or coil level data incorrect?
    Viewed 1 times since Tue, Nov 28, 2006
    I have a ProSoft Modbus Master solution and would like to know, is the Slave Status List the best place to monitor for communications health of the network?
    Viewed 1 times since Tue, Mar 18, 2008
    How do I enter a Modbus address of 40001 or higher in the DevAddress command field of my MVI56-MCM?
    Viewed 1 times since Tue, Nov 28, 2006
    Read Commands from my Modbus Master to a ProSoft MCM Slave are working but Write Commands are failing. How do I fix this?
    Viewed 1 times since Fri, Feb 8, 2008
    What are the causes of a -11 error code using a ProSoft Modbus product?
    Viewed 1 times since Mon, May 17, 2010
    If I am reading the value from ProSoft 4x register, and it represents a digital input or digital output, how is the value stored?
    Viewed 1 times since Tue, Nov 28, 2006
    How can a module's Modbus port, configured as a Slave port, detect communication loss with the Master port?
    Viewed 1 times since Tue, Nov 28, 2006
    • Icon SubscriberSubscribe to Article
    • Icon PrinterPrint Article
    • Icon EmailEmail Article to Friend
    • Icon PDFExport to PDF
    • Icon MS-WordExport to MS Word
    • Icon TwitterTweet This Article
    • Icon DiggDigg It
    • Icon StumbleuponStumble Upon
    • Icon de.icio.usDel.icio.us
    Article Rating (5 Votes)
    Rate this article
    Powered by PHPKB Knowledge Base Software