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Today, Tuesday, February 7, 2012
Reliable hardware is solved but not software. If we are able to produce a hardware solution to most control problems, who will be its champion?
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By Charles Moeller on 7 February, 2012 - 9:21 pm -
> Charles, for many years process control was supplied by pure hardware solutions
---- snip...
By Charles Moeller on 7 February, 2012 - 5:05 pm -
Vladimir:
CharlieM wrote:
>> More recently, Physicist Dr. Lee Smolin in The...
By Charles Moeller on 7 February, 2012 - 3:56 pm -
Bill:
CharlieM wrote:
>> Efficiency and speed are gained by local control in...
By Charles Moeller on 7 February, 2012 - 3:45 pm -
> Mr. Moeller: Are you advocating some new hardware architecture? It would help
> this...
By Vladimir E. Zyubin on 7 February, 2012 - 11:47 am -
> CharlieM wrote: More recently, Physicist Dr. Lee Smolin in The
> trouble with...
By Ken E on 7 February, 2012 - 9:25 am -
What is the problem you guys are trying to solve? Yeah, modern programming still dates back to...
By Steinhoff on 7 February, 2012 - 6:01 am -
Armin Steinhoff wrote:
>> Parallel-concurrent operation happens today on every standard PC.
...
By William Sturm on 6 February, 2012 - 3:58 pm -
CharlieM wrote: <<Efficiency and speed are gained by local control in hardware
over...
By Charles Moeller on 6 February, 2012 - 2:39 pm -
Armin:
---- snip ----
> Parallel-concurrent operation happens today on every standard PC.
...
By Charles Moeller on 6 February, 2012 - 2:19 pm -
> Yes, it can be presented as a number, but TM "as is" does not
> include such...
By Dick Caro on 6 February, 2012 - 1:02 pm -
Mr. Moeller: Are you advocating some new hardware architecture? It would help this discussion if...
By Charles Moeller on 6 February, 2012 - 11:13 am -
Vladimir:
> CharlieM wrote: The human psychology and physiology is able to handle situational
...
By Vladimir E. Zyubin on 6 February, 2012 - 3:38 am -
> CharlieM said:
> A parallel-concurrent language is a necessary next step toward
>...
By Steinhoff on 6 February, 2012 - 3:35 am -
> Armin wrote:
>> The use of mixed technology is the issue ... that means you can include...
By Steinhoff on 6 February, 2012 - 3:28 am -
> [ clip]
> That is correct. A parallel-concurrent language is a necessary next step toward...
Originally posted by Harish
on 6 February, 2012 - 5:02 am
on 6 February, 2012 - 5:02 am Relation between fuel and air mass flow rate
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By Bill Schwarz on 7 February, 2012 - 9:18 pm -
Google "stoichiometric combustion"...
By Harish on 6 February, 2012 - 2:08 pm -
Can you give me more insight into this? How about the excess air? the ratio depends on what...
By kumar sunil on 6 February, 2012 - 10:22 am -
> Is there a relationship that exist between fuel mass flow and the air mass flow?
Yes, there...
Alarm viewer not working in HMI
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SYSTEM.DD is the master data dictionary file, which contains pointers to all *.DD files used by the...
Dear sir,
i need to inform u i didnt have backup of E:\Site and I checked the configuration file...
Originally posted by Ben on 6 February, 2012 - 7:05 pm
on 6 February, 2012 - 7:05 pm Differences between "MODBUS Over Serial Line" (legacy standard) and the current "Modbus Serial Line Protocol and Implementation Guide V1.02"
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Thanks for the response. That was what I was feeling.. I take it that communication between a...
By Lynn August Linse on 7 February, 2012 - 9:57 am -
You won't find a solid answer because it depends on the 2 products you compare. Few people have...
Originally posted by bman on 7 February, 2012 - 1:45 pm
on 7 February, 2012 - 1:45 pm What is the industry standard on short circuit protection or low voltage protection?
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By bob peterson on 7 February, 2012 - 6:30 pm -
There is no requirement to have short circuit protection on any individual sensor. It is solely a...
Posted by EDMUND Y. ADU on 7 February, 2012 - 4:01 pm
on 7 February, 2012 - 4:01 pm WHAT SHOULD BE THE MAXIMUM ACCEPTABLE OR ALLOWABLE LOAD TUNNEL TEMPERATURE OF GE FRAME 9 GAS TURBINE?
Posted by EDMUND Y. ADU on 7 February, 2012 - 3:48 pm
on 7 February, 2012 - 3:48 pm REASON FOR THE 8 MINUTE TIME SET FOR FLAME-OUT FOR GE FRAME 9 GAS TURBINE AFTER SHUTDOWN?
ABB OS500 operator Station HMI alarm and events
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By Faisal on 7 February, 2012 - 2:13 pm -
Thanks Rob
I did the installation all over again and its working fine now. u said rightly i...
Originally posted by ben galay on 6 February, 2012 - 6:41 am
on 6 February, 2012 - 6:41 am Temperature Monitoring for Rotating Contacts
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By F Johnson on 7 February, 2012 - 9:43 am -
It depends on the temperature and the surface characteristics (emissivity) for a simple infrared...
By Curt Wuollet on 6 February, 2012 - 6:19 pm -
Radiation pyrometer, or a mountable version of those heat guns popular with maintenance folks....
How to calculate the mass flow of the axial compressor
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Thanks for your reply..
Please let me know the parameters that made up the index pressure and...
By Namatimangan08 on 7 February, 2012 - 4:48 am -
> I'm still not clear on the differential pressure you were mentioning.Can you
> explain me...
By Namatimangan08 on 7 February, 2012 - 3:26 am -
> I'm still not clear on the differential pressure you were mentioning.Can you
> explain me...
Hi,
Thanks for your prompt reply!!
The second method is based on the heat balance, but i'm...
from the Instrument department...
Installation of a new PLC between machine and existing PLC to improve reliabilityOriginally posted by instrument_guy on 7 February, 2012 - 6:28 am
on 7 February, 2012 - 6:28 am Planning to install a new Allen Bradley PLC in between my existing vendor provided PLC-5/40C and compressor machine. The purpose is to implement TMR on the machine and do not modify anything on Vendor provided PLC-5/40C.
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By Joe E. on 7 February, 2012 - 9:34 am -
If the ControlLogix supports TMR, and your sensors are going to it anyway, is there a reason you...
Posted by Bhadresh Chauhan on 7 February, 2012 - 4:48 am
on 7 February, 2012 - 4:48 am GE machine Fuel Temperature trip on Start up on around 20% speed
How negative temperature control curve keep firing temperature constant
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By aliya on 6 February, 2012 - 11:29 pm -
kindly reply to this post, as i need the answer urgently.
How does firing temperature behave for...
By Aliya on 5 February, 2012 - 9:26 pm -
Ok that means on horizontal line before corner point, the firing temperature remains less than...
saving electrical power which is wasted in heat of water immersed/air-cooled resistors during testing of Diesel Electric Locomotive by converting the same match the Busbar V & Frequency
Network connection between various VFD s and Motor Protection Relays(MPR) using RS 485 loop topology.
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By Richard R. on 6 February, 2012 - 7:34 pm -
Folks, RS485 is a daisy-chain network which can not be configured as a star network by default,...
Originally posted by ALI on 3 February, 2012 - 10:00 am
on 3 February, 2012 - 10:00 am Gas Turbine Load/IGV hunting at 75 to 85MW in winter.
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I can not post the point lists here, please go to the following address to view:
...
Hi,
I assumed that your statement: 'cold weather' refers to temperatures below neg 20 degC not...
Hi RAY200,
I couldn't found the point list. Can you please write them again?
Regards
Ali...
And one more thing, the GT with DLN can be running on the the Extended LL mode in a shot time, but...
If possible, Please collect the following real-time value of signals when gt load hunting, and sent...
Need a free Modbus OPC server
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Have you tried MatrikonOPC's Modbus OPC Server?
...
common hmi for machines with different control systems
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Hi Sandy,
Here are bunch of whitepapers and articles about the secure and reliable data transfer...
Originally posted by Marius on 2 February, 2012 - 2:56 am
on 2 February, 2012 - 2:56 am I'm trying to establish communication between a Twido working as a master and two Modbus devices
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By Vittorio Giannini on 6 February, 2012 - 2:08 pm -
Communication errors are managed on twido by system words %SW63 and %SW64. Catching the error code...
now i have another problem: Check communications error.
If a slave does not respond or is...
> I've solved the problem introducing sync variables acting like semaphores
> (plus the...
Originally posted by moreno on 3 February, 2012 - 3:40 pm
on 3 February, 2012 - 3:40 pm Magnetrol Level Displacer never worked
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Loopfail does indicate that the actual loop current differs from the expected loop current by >...
I want to connect C300 DCS to VB 6.0 to create web page where i can display my boiler temperature and pressure etc.
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Hi
C300 EPKS supports ODBC across firewall. Have a firewall in place, configure it to allow only...
I was wondering what would be a good simulator for Bailey Infi90 training?
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By john on 6 February, 2012 - 7:36 am -
ABB has a product called the "Harmony Training Simulator" (HTS) available for purchase. ...
SCADA software running on Linux
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By joaq on 6 February, 2012 - 4:22 am -
> Here is an example of using
> http://pvbrowser.org
> for automation of biogas...
Looking for the manufacturer of PLCs that are used in Jensen Textile machines
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By Nat Dizon on 6 February, 2012 - 3:00 am -
jensen plc is manufactured by cotas computer technology and was acquired by Vestas wind turbine...
Suppliers of GULDE control valves.
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By Muhammad Saeed on 6 February, 2012 - 2:17 am -
Please let me know the suppliers of GULDE make control valves....
Posted by ASHISH on 6 February, 2012 - 1:09 am
on 6 February, 2012 - 1:09 am Simulating a cogeneration plant for my research project
Originally posted by MUHAMMAD KASHIF IDREES on 3 February, 2012 - 12:10 pm
on 3 February, 2012 - 12:10 pm Will new ring core arrangement work for earth fault protection?
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if I recall, the generator is grounded through some resistor.. plz correct me if i m wrong.....
Originally posted by ESKAY on 5 February, 2012 - 5:10 am
on 5 February, 2012 - 5:10 am Under Motor status display page, the status of Dc Emergency lube oil pump running is not shown in the status target display.
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L72QEZ 88QE-1 Emergency Lube oil pump status:
L72QEZ = log. "1" for...
I'm looking for the pinout of the DB9 connector on a drop cable 990NAD21110.
New Replies:
By asg on 5 February, 2012 - 9:04 pm -
> You only need 3 pins in DB9 connector (male or female), connect
> Sh in pin 1, Orange and...
Originally posted by MPAC on 27 December, 2011 - 1:39 pm
on 27 December, 2011 - 1:39 pm Cause of Exhaust Pressure spikes on 7FA
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We did find our problem. We were told to try heat tracing the tubing and I found it hard to...
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