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- 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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A few questions regarding the coding system of modbus RTU
Free/Open Source software project MBLogic now has soft logic.
I want to select a suitable flow meter for measuring water and process solvents with remote indication.
New Replies:
By Rohit Chandak on 20 February, 2009 - 3:44 pm -
I agree with Bruce, change in density will definately affect the accuracy of flow measurement...
A question that has been on my mind for some time...
New Replies:
By James Ingraham on 19 February, 2009 - 5:35 pm -
You are very wrong, Orion. For example, the configuration software for Hilscher's Profibus...
By Orion on 19 February, 2009 - 8:55 am -
I find it amazing that the people who laud the vendors who give their software away don't honestly...
By James Ingraham on 17 February, 2009 - 11:30 pm -
Tony-
You suggest (twice) that I should talk to "Andrew," but I'm afraid I don't know...
James,
I hate to put it bluntly but, I know who you work for and I know some of the history of...
By James Ingraham on 7 February, 2009 - 6:40 pm -
Tony, there's a big difference between an end-user application and a required configuration tool...
By M Griffin on 7 February, 2009 - 6:19 pm -
Curt: You're arguing with people who claim that anything that is free is worthless. And they are...
By Curt Wuollet on 7 February, 2009 - 9:52 am -
Another interesting point of view. It would have a lot more traction if a very large part of this...
What are the best corrosion monitoring solutions available?
method of connecting a DCS system to GE Mk6 using Modbus serial...
New Replies:
By Nacer on 13 February, 2009 - 12:56 pm -
Hello markvguy
Would you please send me a TCI configuration information, I have a PC crashed and...
Can't edit Bus properties in ELOP II
New Replies:
By Kashif on 9 February, 2009 - 4:22 am -
Thanks Tahir,
Maybe I can clarify myself better in the following way:
1.When I add this...
Looking for a free modbus driver that will work with .NET.
New Replies:
By pvb on 1 February, 2009 - 6:13 am -
You might have a look on
http://pvbrowser.org
This is a whole SCADA system as open source.
...
Looking for RTD equations that solve for temperature.
Open source SCADA
New Replies:
Thank you very much, at this time we work on documentation too. We opened a new section on our site...
By M Griffin on 21 January, 2009 - 3:35 am -
I had a look at your web site, and I also downloaded both the binary installer and the source tar...
New release of open source Web Based HMI.
New Replies:
By M Griffin on 18 January, 2009 - 6:45 pm -
In reply to Jim Schaefer: I've had a look at the EMC CNC controller software before, but my own...
I think this idea is great. I haven't looked at your code yet, but a couple of things come to mind...
By M Griffin on 31 October, 2008 - 3:40 am -
In reply to James Ingraham: I'm not 100% sure the plug-in won't work for this, I just have serious...
By James Ingraham on 30 October, 2008 - 2:12 pm -
"With regards to how IE handles SVG, the answer is a bit more complicated."
Wow. No...
By M Griffin on 30 October, 2008 - 1:16 pm -
My implementation will be to add this as another protocol to the MBServer package. I don't run a...
New open source web based HMI.
New Replies:
By M Griffin on 13 January, 2009 - 6:05 pm -
In reply to Adriel Michaud: I've looked at OpenOPC before, but because of the way it works it looks...
Looks like a match made in heaven if you were to add in OpenOPC (python toolkit for OPC)...
Requesting member feedback for the replacement selection of an existing petrochemical control system "DCS".
New Replies:
By Paul Mathew on 3 January, 2009 - 3:41 am -
During eighties and nineties, economic analysis was also used as a tool to select the ideal...
After looking at several control system manufacturers and submitting an RFQ to several mfgs and...
Looking for ABB Software Control Builder for programming PLC in IEC 61131-3...
seeing any response of any controller, i should be able to configure or analyze & act on same...
Air flow decrease in 10" line pipe
New Replies:
By Rohit Chandak on 18 December, 2008 - 1:57 pm -
With time, Orifice Meters do have problems, it could be because of wearing or tearing which shifts...
By Roy Matson on 12 December, 2008 - 11:36 am -
If you need to measure low pressure air flow in a short pipe with no straight run I have a very...
If you are planning to install a secondary flow meter, try Emerson annubar series (multivariable or...
By Roy Matson on 9 December, 2008 - 1:25 pm -
Something to check: Where are you doing the square root extraction?
I remember once checking and...
Boiler Three Element with US1000 Yokogawa
two questions about load cells...
New Replies:
By abbu on 15 December, 2008 - 7:15 am -
Hello sir,
Thanx for the valuable information you have given. Actually it is 1mv/v you are...
Motion Control Calculations, Logging and Reporting
New Replies:
By M Griffin on 12 December, 2008 - 2:58 am -
My replies are interspersed with your comments:
>Logging Rate:
>The 100ms (or similar...
By machinecontroller on 11 December, 2008 - 2:47 pm -
Hello,
Thank you so much for the replies, I am currently investigating all the possible and...
By Andrey Romanenko on 10 December, 2008 - 9:48 pm -
Hello,
If you opt to use OPC DA, you may take a look at our PlantStreamer package. It does data...
in our scada system,PVI OPC server conected to 6 x B&R PLCsvia ethernet .
is suddenly disconnected from one or more even if all PLCs and it takes random time for connecting again.restart PVI manager or resert PLC can change communication status
is suddenly disconnected from one or more even if all PLCs and it takes random time for connecting again.restart PVI manager or resert PLC can change communication status
New Replies:
Have you contacted the OPC Server vendor for support?
Adriel Michaud
MatrikonOPC...
Do we need a flowrater in bubbler method?
New Replies:
By Roy Matson on 7 November, 2008 - 4:35 pm -
David,
That's what I was taught also, but in reality if you connect the bubble tube to the...
By Roy Matson on 6 November, 2008 - 11:23 pm -
No, you don't need a rotameter, in fact you don't even need a regulator or needle valve. You just...
By David on 6 November, 2008 - 10:36 pm -
You need a differential regulator which can produce a constant gas flow rate under varying head...
When saving a Reference Data Editor in Concept, can anybody tell me the difference between a Reference Data Editor saved as an *RDE vs *RDF??
Problems converting from continuous to discrete time.
I would like to read a text string from a device which connected to the serial port and save this string to a text file or in to a database..
New Replies:
By Curt Wuollet on 31 October, 2008 - 12:39 am -
I played around a bit with their software and came away with the impression that their free...
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