Experimental Physics and Industrial Control System
|
Paul,
I looked at the available modbus code a few months ago and found it
supported only a small subset of modbus codes. It seems it was developed
for talking to a particular PLC, via register reads and writes, rather
than a more general modbus device. If your goal is similar you may be
happy with the CLS/BNLS code. If your goal is to be able to support a
variety of modbus devices you'll need to do some additional
device/driver development.
Sheng,
I am also interested in learning about the modbus device support at SNS.
John Dobbins
Research Support Specialist
Laboratory for Elementary Particle Physics
Cornell University
Paul Sichta wrote:
Sheng,
I visited SNS a few weeks ago and Ernest showed me the Beckhoff hardware
which he said you wrote a modbus driver/device support for. Was that
working well? I am thinking of trying out the Beckhoff stuff.
I will be supporting some modbus tcp/ip devices in the near future and
have the CLS and some upgraded (APS?) source but haven't looked at it
yet. What limitation did that have for you, so that you needed to write
a new version?
Regards,
- References:
- modbus over tcp/ip Geoff Savage
- FW: modbus over tcp/ip Peng, Sheng
- Re: modbus over tcp/ip Paul Sichta
- Navigate by Date:
- Prev:
Re: modbus over tcp/ip Paul Sichta
- Next:
Channel Access Gateway (Problems at the SLS) Dalesio, Leo `Bob`
- Index:
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
<2005>
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
- Navigate by Thread:
- Prev:
Re: modbus over tcp/ip Paul Sichta
- Next:
Spam on tech-talk J. Frederick Bartlett
- Index:
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
<2005>
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
|
ANJ, 02 Sep 2010 |
·
Home
·
News
·
About
·
Base
·
Modules
·
Extensions
·
Distributions
·
Download
·
·
Search
·
EPICS V4
·
IRMIS
·
Talk
·
Bugs
·
Documents
·
Links
·
Licensing
·
|