Member Login
member
passwd
remember me on this computer.

- join now -

Search

Neat Stuff

Visit our shop for nerds in control lifestyle products.

Cool stuff
Select a topic of interest:
...and press:
Fortune
A little inaccuracy saves a world of explanation.
-- C.E. Ayres
RSS Feed
RSS feed Use this link to get an RSS feed of the Control.com article flow, for private, non-commercial use only:
www.control.com/rss
Select a Page Style
Select one of the following styles:
- BluFu
- Classic
(cookies required)
from the Automation List department...
Modbus slave simulation software needed
Software in Automation topic
advertisement
Posted by jmc on 7 February, 2008 - 11:51 pm
I need the name of a Modbus slave simulator software that I can buy, which can reply with a different user specificed value each time, on at least first 100 query (hopefully without needing the user to script or code).

I have evaluated over a dozen package, none can do this (e.g. mdbus32, modbusview, modbusslave, modsim32, modbusconstructor, simplymodbuslsave, modrsim, etc... so if you recommend something, make sure it can do this).

Specifically, the simulator should be able to return a unique user defined value on each read (which could in-theory happen at any random time to one or more registers) For example, HR40015: 1st read 20.1, 2nd read 21.1, 3rd read 20.1, 4th read 20.2, 5th read 20.2, 6th read 30.5, 7th read 35.5, 8th read 15.8, 9th read 15.8 And HR40025: 1st read 28.1, 2nd read 37.1, 3rd read 46.1, 4th read 20.2, 5th read 30.2, 6th read 40.5, 7th read 40.5, 8th read 35.8, 9th read 25.8, etc.

I am writing a special test for my master, so ideally, the slave simulator should be able to detect when register X has been read, then load the next new value for register X; So only after register Y has been read, should it then load the next new value for register Y.

Thanks you,
jmczero@hotmail.com

From Control Engineering magazine...
Related articles from Control Engineering magazine
Above articles copyright 2008 Reed Business Information. Subject to its Terms of Use.

Your use of this site is subject to the terms and conditions set forth under Legal Notices and the Privacy Policy. Please read those terms and conditions carefully. Subject to the rights expressly reserved to others under Legal Notices, the content of this site and the compilation thereof is © 1999-2008 Control Technology Corporation. All rights reserved.

Users of this site are benefiting from open source technologies, including PHP, PostgreSQL and Apache. Be happy.

Advertisement
Our Advertisers
Help keep our servers running...
Patronize our advertisers!