Solved

Modbus Conversion for Schneider Analyzer

Posted on 2010-08-18
7
1,767 Views
Last Modified: 2013-11-13
I try to get data from a PM710 energy analyzer but I couldn't convert the hexadecimal value to original data.

In the document the parameter type is mentioned as Mod10. What is the Mod10 data format?

The hex value is: 010818D4002B0000
The original data should be 4363476800 after conversion.
0
Comment
Question by:emresamisuzer
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 3
7 Comments
 
LVL 3

Expert Comment

by:grepll
ID: 33469333
Which register are you trying to read?
0
 

Author Comment

by:emresamisuzer
ID: 33472007
1700, Active Energy Total
0
 
LVL 3

Expert Comment

by:grepll
ID: 33472524
Can you please post (link to) your document with register list?
I am looking in http://www.powerlogic.com/literature/63230-501-209.pdf and cannot find it there.
0
Free NetCrunch network monitor licenses!

Only on Experts-Exchange: Sign-up for a free-trial and we'll send you your permanent license!

Here is what you get: 30 Nodes | Unlimited Sensors | No Time Restrictions | Absolutely FREE!

Act now. This offer ends July 14, 2017.

 

Author Comment

by:emresamisuzer
ID: 33472644
My device has an older firmware version so the latest register list doesn't match.
pm710.PDF
0
 
LVL 3

Accepted Solution

by:
grepll earned 500 total points
ID: 33472695
Thank you, another fw version explains my confusion.

Generally, Mod10 (or Modulus-10000) is format, where you split your decimal number into four number groups and convert this groups independently to series of 16-bit registers. You have to figure out (from manual) which order of registers (high-first or low-first) it uses.

Conversion from hex to decimal is then straightforward: you convert each 16-bit register to decimal and put together the four-number groups.

I tried to convert the numbers you provided. I didn't manage to match them together, but I will put it here for reference:

your hex number: 010818D4002B0000
split into 16bit groups: 0108 18D4 002B 0000
convert to decimal: 0264 6356 0043 0000
put together (apparently in reverse order):
4363560264

Your number was 4363476800 which is different, but that difference is not that big, maybe you read the numbers in slightly different times.
0
 

Author Closing Comment

by:emresamisuzer
ID: 33472703
Thank you. The conversion is correct
0
 
LVL 3

Expert Comment

by:grepll
ID: 33472899
You're welcome.
0

Featured Post

Schedule a Tour of the ATEN booth at InfoComm 2017

Tour the ATEN booth to see the the Latest Addition to the Modular Matrix Switch Series, New 4K HDMI Over IP Extender and more! Enter ATEN's Ultimate Giveaway Sweepstakes for a chance to win one of several great prizes, including an ATEN US7220 2-Port Thunderbolt 2 Sharing Switch!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Short answer to this question: there is no effective WiFi manager in iOS devices as seen in Windows WiFi or Macbook OSx WiFi management, but this article will try and provide some amicable solutions to better suite your needs.
This article is a collection of issues that people face from time to time and possible solutions to those issues. I hope you enjoy reading it.
Introduction to Processes
Michael from AdRem Software explains how to view the most utilized and worst performing nodes in your network, by accessing the Top Charts view in NetCrunch network monitor (https://www.adremsoft.com/). Top Charts is a view in which you can set seveā€¦

724 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question