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The threads that wouldn't die...
- PC reliability?
- Windows, real time
- PID loops
- PCs vs. PLCs
- Replacing people
- MS 'monopoly'?
- Software quality
- Where do we go from here?
- Why pay?
- PC reliability?
- Windows, real time
- PID loops
- PCs vs. PLCs
- Replacing people
- MS 'monopoly'?
- Software quality
- Where do we go from here?
- Why pay?
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Fifth Law of Procrastination:
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Procrastination avoids boredom; one never has the feeling that
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Here goes one more question: I am using an RS232-RS485/422 converter that relies on the RTS line of the RS232 side to control the high impedance state of the line drivers on the RS485/422 side. ...
New Replies:
By Anonymous on 4 April, 2007 - 12:13 am -
You can resolve it using the Isolation and lightning protection RS-232/485/422 converter on...
By Sim Smith on 8 October, 2006 - 10:14 pm -
You may try out these port-powered serial converters (RS-232/RS-485 and RS-232/RS-485/RS-422) on...
We use interface cards with a dual ported RAM...
maybe there could be an interest for a special breakout board with 24volt signals
looking for modbus_tcp.h and modbus_tcp.c written by Phil Costigan
New Replies:
By Anonymous on 13 December, 2006 - 11:32 pm -
http://pvbrowser.org/pvbrowser/sf/manual/rllib/html/classrlModbus.html
GOTO http://pvbrowser.org...
By Jiri Baum on 14 June, 2005 - 11:09 pm -
Hello,
> Does anyone know where I can find the source for modbus_tcp written by Phil
>...
We are looking for a reporting tool similar to Crystal Reports - for Linux.
New Replies:
By Koby Peleg Hen on 14 October, 2006 - 8:52 pm -
Hello all
We at Mksoft are at the same stage about having reporting tools under linux.
After...
By Allan on 1 October, 2004 - 10:31 pm -
Men, i heard that linux developer are currently developing a package similar to crystal report in...
By Anonymous on 13 October, 2003 - 9:22 am -
www.inetsoftware.de
they have a program call i-net crystal clear teh server version to view the...
I am in urgent need or raising a Square D PLC from the dead. ... may need to write drivers ... Can Linux be used?
New Replies:
By Don W on 4 October, 2006 - 12:28 am -
Mike,
To reuse the Sq d sy-max you will need the sfw374 program and a security key (dongle). You...
Need soft PLC code generator (ladder logic, structured text, flow chart etc) for PC and interpreter written in C.
New Replies:
By Mr. Oakland on 3 August, 2006 - 6:40 am -
Look @ "http://cubloc.com"
they have nice Ladder Logic controllers even though not...
Apparently Windows forces some bits in the parport registers high or low. Is there anything to do about it?
New Replies:
By GC on 26 April, 2006 - 11:42 pm -
The problem is easy. Instead of using the ground (pin 22) to each data line, use them in pairs to...
By nils on 6 October, 2003 - 6:22 pm -
Check out this link: http://www.lvr.com/parport.htm.
You need a special driver for acessing the...
By Christian on 4 October, 2003 - 6:26 pm -
Please, do you have found a solution ? I've got the same problem ... with Win98 SE when I progam...
Fault with Pacific Scientific PC800 brushless servo drive
New Replies:
By Juan Pablo Pachon on 4 November, 2005 - 11:10 pm -
Please, send me information about of PC 800 Brushless Servo Drive
This Servo Drive work alone or...
Software PLC linux
New Replies:
By ciluuk on 4 September, 2005 - 4:53 pm -
Hi,
try MATPLC from http://mat.sourceforge.net
wish to help...
thanks...
I have been thinking of making the tiny browser SCADA put up at www.smbd.org multilingual ...
New Replies:
By MIckey on 5 February, 2005 - 4:45 pm -
The Xycom/Pro-Face HMI suport multi-language capability right out of the box. It's a fairly easy...
Can somebody tell me if Linux support PLC drivers use to retrieve data ?
New Replies:
By nuyri özdemir on 19 October, 2004 - 12:26 am -
What kind of data do you want to retrieve from which hardware? Perhaps the Comedi project is what...
http://pvbrowser.org
is a Software for Process Visualization, HMI and SCADA.
Now we are working on the integration of PLCs and Fieldbuses.
is a Software for Process Visualization, HMI and SCADA.
Now we are working on the integration of PLCs and Fieldbuses.
New Replies:
By Curt Wuollet on 12 August, 2004 - 2:38 pm -
The concept makes sense to me, my little demo PLC and MAT also work this way, though not...
By Rainer Lehrig on 11 August, 2004 - 5:52 pm -
The idea behind rllib is:
- have a OS independent lib for control/automation
- It works on...
By Curt Wuollet on 10 August, 2004 - 1:11 pm -
That's a really good question.
Wouldn't it be great if all the various truly Open Automation...
How do you set up your serial port to talk to the Nudam 6053?
New Replies:
By Rainer Lehrig on 19 July, 2004 - 5:29 pm -
1) You will need a NuDAM-6520 RS-232/RS-485 Converter for your Port.
2) For the communication...
By Rokicki, Andrew on 22 June, 2004 - 1:31 am -
Do you get anything when you do:
cat /dev/ttyS0
use Ctrl-C to exit.
Try hooking known...
By Curt Wuollet on 20 June, 2004 - 1:05 pm -
Have you tried something like minicom or C-kermit as a terminal? Use something like these to find...
This is a RFC (Request For Comment). I apologize for writing C code, but I think better in code than in any natural language ...
New Replies:
By Anonymous on 30 March, 2004 - 3:07 pm -
> On Sun Jan 9 19:46:49 2000 Simon Martin wrote...
>...I would like to say the following...
Why would anybody who cares enough to write Open Source code on Linux want to depend on MS proprietary protocols and having a Windows box
in the mix?
in the mix?
New Replies:
By Michael Griffin on 18 March, 2004 - 10:01 pm -
Re: Paul Wilson & Software
If by "your favourite company" you are referring to...
By Paul Jager on 18 March, 2004 - 9:20 pm -
Safety systems should be outboard of any processor based device, including any mainstream PLC or...
By Paul Wilson on 15 March, 2004 - 3:36 pm -
One day, a chemical plant operator is going to be unable to respond to an emergency, because his...
from the Automation List department...
New version: Allen Bradley Ethernet Library and utils for LinuxOnce again, I have a new version of the AB Ethernet Utils available for downloading.
New Replies:
By Ron Gage on 22 February, 2004 - 12:00 pm -
Hi folks:
Once again, I have a new version of the AB Ethernet Utils available for...
Need an ASIC to convert modbus RTU to modbus TCP, but the modbus TCP comms turnaround time must be very fast.
New Replies:
By Tony on 21 November, 2003 - 11:49 am -
Yes, My Embedded device can constantly poll the subset of the Modbus RTU registers and held them...
modbus standards
New Replies:
By Automation Linse on 13 November, 2003 - 3:46 pm -
I had a look - such vendor product documents are VERY dangerous to use as a "Modbus...
By Rainer Lehrig on 11 November, 2003 - 2:37 pm -
For our project http://pvbrowser.org I'm just integrating modbus.
I rely on the following...
By Curt Wuollet on 22 October, 2003 - 11:54 pm -
Hi Lynn
Unfortunately, at this stage of the game, the only "universal" solution that...
By Lynn at Alist on 21 October, 2003 - 8:22 am -
In "theory" Modbus is a half-duplex protocol on TCP, so many slaves
won't expect fast...
By Curt Wuollet on 16 October, 2003 - 7:58 pm -
There are supposed to be, but from what I've see you are best guided by what is supported on the...
By Randall on 15 October, 2003 - 11:01 pm -
See http://www.modbus.org for all Modbus(R) standards questions....
By Lynn at Alist on 15 October, 2003 - 9:59 pm -
Sorry, there are none in the formal "standards" world. Go to http://www.modbus.org and...
By Randy Marek on 15 October, 2003 - 5:57 pm -
Go to http://www.modbus.org The most common is Modbus RTU either over RS-232/422/484 or TCP/IP.
...
Need to send data/binary and object file in the form of XML (XML format) thorugh RS 485 using Modbus RTU. Is it possible?
New Replies:
By Jiri Baum on 29 October, 2003 - 8:51 am -
Now you've done it... (it's Slovak, not Czech)
Anyway, since google doesn't know about it, it...
Need info about & suggestion about control project.
New Replies:
By Jiri Baum on 25 October, 2003 - 2:19 pm -
Jiri Baum:
> > No, it is an objective property. For instance, a PLC is real-time,
>...
By Jiri Baum on 25 October, 2003 - 2:15 pm -
Bob Peterson:
> > > While your statement might well be true for some control
> >...
i have got the trouble to receive data from magelis to my PC.
Attempting to resurrect my PC104 PLC project now that the dust has settled a bit.
New Replies:
By Chiron Consulting on 3 July, 2003 - 10:59 am -
Andrew,
This is a late reply, so you may already have got what you need from earlier feedback.
...
By Rokicki, Andrew on 30 June, 2003 - 10:15 pm -
On June 28, 2003, Jiri Baum wrote: > I would say that if the tech needs to read the...
By Dick Caro on 30 June, 2003 - 1:33 pm -
Exactly. My experience with SFC is Grafcet (in both Concept and ISaGraph). The beauty of SFC is...
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