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Today, Thursday, December 31, 2009
configure the RS232 port on GE 90-30 with a CPU364 as a modbus rtu slave?
Can we operate the IGV in manual during part load??
New Replies:
where it is located for LVDT and what the purpose?
>calibration (LVDT's ).
...
By BB on 31 December, 2009 - 3:21 am -
You have also to check your IGV calibration (LVDT's ).
Regards, ...
Prasad,
We don't know anything about the machine at your site and it's control system.
Please...
I want to about How to control IGV manually to maintain required exhaust temperature for Co-Gen Gas...
GE MARK V Manuals
New Replies:
By SHANTHIRAJ on 31 December, 2009 - 3:08 pm -
>Let me know your email address.
>Regards,
>BB
DEAR BB... I WOULD LIKE GET THE MARK-V...
Where is the best practice to implement the Square Root Function, in the Transmitter or System ???
What is the advantage and disadvantage for each ???
What is the advantage and disadvantage for each ???
New Replies:
Mathematically and from control point of view it doesn't make any significant difference EXCEPT:
...
By roy matson on 31 December, 2009 - 1:36 pm -
Happy new year to you also
Where to implement the square root?
I usually do it in the...
Editing I/O modules, PLC5/40E, RSLogix5.
New Replies:
By Bob Peterson on 31 December, 2009 - 2:39 pm -
From some of what you said I am guessing you are dealing with a PLC5. he
configuration data is...
Great marketing of Modbus
New Replies:
By Roy Matson on 31 December, 2009 - 1:42 pm -
I have to agree.
But where do you think we would be without Modbus, what would have been used in...
By curt wuollet on 31 December, 2009 - 1:07 am -
If you think that's humorous, you should bust a gut on every page of the trade magazines. Even the...
Network Redundancy
New Replies:
By Paul Wacker on 31 December, 2009 - 11:50 am -
You can find product related information here:
...
By Kartik on 31 December, 2009 - 4:17 am -
Thanks for the reply.
May i have the Data sheet or Manual for the solution u described or any...
By Fred Loveless on 29 December, 2009 - 11:49 am -
ideally in a situation like that you would have dual ethernet cards for the IO. However when you...
By Paul Wacker on 29 December, 2009 - 11:14 am -
Yes, it is possible to add redundancy at the Ethernet switch level. To implement this, you will...
I am looking for information on what vector graphic editing software people are using.
New Replies:
By William Sturm on 31 December, 2009 - 11:21 am -
For A-B connectivity, this MAY help: http://www.digi.com/pdf/prd_ds_digioneiap.pdf
Although, it...
By pvbrowser on 31 December, 2009 - 5:38 am -
> In reply to pvbrowser: Do you create the SVG artwork completely as custom art for each...
By curt wuollet on 31 December, 2009 - 1:16 am -
Hi Michael
And I didn't say there was anything wrong with selling to people who think like crows...
By M Griffin on 31 December, 2009 - 1:00 am -
In reply to Archie: You had my hopes up for a moment, but then I looked into it some more. The...
The Ethernet/IP protocol has recently become much more open. Rockwell software has posted a...
By Ken E on 30 December, 2009 - 4:09 pm -
Your comment about people implementing scratches on gauges in an HMI reminds me of a common joke...
By M Griffin on 30 December, 2009 - 3:22 pm -
In reply to Curt Wuollet: People seem to look for a certain minimum amount of "bling". I...
By M Griffin on 30 December, 2009 - 3:12 pm -
In reply to Archie: I have drivers for Modbus/TCP and SAIA S-Bus Ethernet (this one is still being...
By M Griffin on 30 December, 2009 - 3:01 pm -
In reply to Bill Sturm: Yes, at its heart it's all just DOM scripting. I've just added a layer of...
Does MBLogic have any other communication drivers besides Modbus? I would be interested in trying...
By William Sturm on 30 December, 2009 - 8:53 am -
Thanks for the incredibly detailed explanation. It sounds like a very nice project, good clear...
By M Griffin on 30 December, 2009 - 2:00 am -
In reply to William Sturm: It works with user defined graphics. I got started looking into this...
By M Griffin on 30 December, 2009 - 12:17 am -
In reply to pvbrowser: Do you create the SVG artwork completely as custom art for each application...
By M Griffin on 29 December, 2009 - 11:48 pm -
In reply to RK Sastry: What you've described is I think more closely related to "augmented...
By M Griffin on 29 December, 2009 - 11:37 pm -
In reply to Archie: I'm going to guess from your description that Adobe Illustrator can create SVG...
By curt wuollet on 29 December, 2009 - 9:35 pm -
There are two big advantages:
1. Graphics are _kewl_ and sell projects to people who think like...
By Ken E on 29 December, 2009 - 1:09 pm -
I'm replying to some of the comments about animations and graphics used frequently in the process...
I've done some experimenting with Illustrator, SVG, and Inkscape. To my surprise, when I saved as...
Hi, Guys,
I have mostly used the basic Graphics and tools that are available with the...
By pvbrowser on 29 December, 2009 - 4:02 am -
Our http://pvbrowser.org
is an open source project for HMI/SCADA that also supports SVG.
We use...
By William Sturm on 28 December, 2009 - 10:03 pm -
Wow, you have been busy!
Are you planning an open API for attaching user defined vector...
By M Griffin on 28 December, 2009 - 9:26 pm -
In reply to Ken E:
>- Buttons that set or alternate bits, and display that bit status as an...
In reply to M Griffin: The reasoning behind me using PNG files is the ease of use with the .NET...
By M Griffin on 28 December, 2009 - 7:59 pm -
In reply to Hugo and Bill Sturm: Thanks for your comments. They seem to confirm my own experience....
By William Sturm on 28 December, 2009 - 2:57 pm -
I have mostly used basic push-buttons, pilot lamps, bar graphs, and data entry/displays. I have...
By M Griffin on 28 December, 2009 - 2:37 pm -
In reply to James Ingraham: I had assumed that most people would only want push buttons, pilot...
By M Griffin on 28 December, 2009 - 1:57 pm -
In reply to Archie: I have heard that a lot of commercial artists (advertising, brochures, etc.)...
By Ken E on 28 December, 2009 - 12:43 pm -
Hello,
For me personally I prefer a minimal HMI screen. I use these "standard"...
By M Griffin on 28 December, 2009 - 12:19 pm -
In reply to JBA:
I just had a look at the Sherrill-Lubinski web site. It appears that they are...
By anonymous on 28 December, 2009 - 11:54 am -
Depends on the industry I have worked in. There is always something that needs to be animated to...
By James Ingraham on 28 December, 2009 - 11:03 am -
We try very hard to use only built in stuff where possible. However, we've found that it doesn't...
There is an open source project that I have created that focuses very heavily on the quality of...
By JBA on 27 December, 2009 - 1:02 pm -
We use Sherrill-Lubinski's SL-GMS tools. Not cheap nor open source.
...
True value of Digital tags in OPC client PC is -1 from ABB OPC server (OPC TenoreNT)
New Replies:
By Rob on 31 December, 2009 - 4:37 am -
Actually, -1 is correct.
More accurately, false is when all bits of the byte or word are 0, true...
By Romulo Rodriguez on 30 December, 2009 - 12:22 pm -
Try reading digitals as analogs in the client side.
Romulo Rodriguez...
Poor performance of butterfly valve when used as flow control tool
New Replies:
Ayman Kamha wrote :
Thanks for all those people who shared their opinions for that problem with...
> We are still waiting for a sketch, your description is too hard to understand but it sounds as...
Ayman,
My experience using butterfly valves to control flow is limited to water applications,...
By Roy Matson on 22 December, 2009 - 11:16 am -
We are still waiting for a sketch, your description is too hard to understand but it sounds as...
By Jonas Berge on 18 December, 2009 - 11:46 pm -
I'm not a valve expert so all I can do is to encourage you to speak to a valve expert from Fisher....
What problems may arise from regular shutdown and start of Gas turbine?
New Replies:
By jojo on 31 December, 2009 - 1:31 am -
I agree with all that CSA has mentioned except the last sentence, well actually the context it was...
After foreign object damage, the biggest "enemy" of combustion turbines is thermal...
using MVI46-MCM Modbus RTU to read Danfoss VLT 6000 Heatsink Temperature
New Replies:
By ProSoft Support on 30 December, 2009 - 6:51 pm -
First you will want to implement the sample ladder logic for the SLC500 processor to allow the SLC...
from the deeper piles or better performance? department...
mechanical output resolution of 'smart' valve positionersdigital valve positioners really better resolvers?
New Replies:
By Jim Delaney on 30 December, 2009 - 6:12 pm -
Thank you, gentlemen, for your responses. Mr. Buckbee's response made me wonder if he is...
By George Buckbee on 29 December, 2009 - 9:25 am -
In most cases, higher positioner resolution is a moot point. Many control valves are simply...
By Dick Caro on 28 December, 2009 - 6:25 pm -
You have a good question, but I am not sure that anyone at Fisher Controls/Emerson or at...
Mark V control of turbines
New Replies:
When in parallel with other generators and their prime movers on a grid, regardless of whether the...
Okay, that solved a lot of other problems i was facing but i still have the same doubt that does...
Just a quick comment on constant settable droop:
If the DWATT signal is from a single...
It has been told in previous threads that some early Mark V systems used this very simple...
Discrepancy with the controlling equation for govenor
New Replies:
Hello again,
As was said before, or in other words, again, the information you seek about how...
LCNE Cable Faults causing ISOL nodes
New Replies:
By brian on 30 December, 2009 - 1:26 pm -
Another couple of things to check. You do not mention the power supplies on the LCNEs or whether...
By Brian on 30 December, 2009 - 12:50 pm -
another couple of things for consideration from the school of hard earned lessons learned. The...
We had a similar intermittent fault we couldn't identify, eventually determined to be two bad...
Upgrading mark-4 control system. Does anybody have guidance on downloading the Mark IV software backup?
New Replies:
By MGJ on 30 December, 2009 - 6:50 am -
Sorry for the Error.........
We upgraded Mark-4 to Mark-6e
...
By MGJ on 29 December, 2009 - 5:11 am -
Probably this is not required. GE will have all the required Data for your existing...
It's absolutely possible to get the download information from any Mark IV (non+ or +).
But if...
Clarification regarding Microprocessor based relay, data concentrator and I/O Count or hard wire signals
programing a running stepper motor using java program
Can someone send me a simple P&ID Simulator, feedback control loop and cascade control loop
New Replies:
You can find any number of PID simulators very easily using any Internet search engine, or even the...
purpose of 96GN-1/2/3 transmitters in GE 9FA DLN2+ machine?
New Replies:
I was hoping someone else would respond to this one.
Are you having some problems with these...
Damper control for Turbine Exhaust to WHRU/HRSG.
New Replies:
Dear Sanjeev Vijayan,
Where we have used separate bypass and HRSG dampers we have had better...
By Sanjeev Vijayan on 29 December, 2009 - 12:27 pm -
Dear Otised,
We have designed a system which has two dampers 1 each on bypass and whru. The...
You don't say what the exhaust arrangement is. If you haven't designed it yet and you really need...
Need a Modbus master to test my modbus slave code
New Replies:
I have written a Modbus Tester for serial as well as one for Modbus TCP/IP. Contact John Caldwell...
By Andrzej on 23 December, 2009 - 3:30 pm -
Try free tools Modbus Tester and Modbus Scanner from www.modbus.pl.
Regards
Andrzej...
Modbus Test Pro is easy to use (although I may be biased since I helped develop it) and supports...
By Arun on 15 December, 2009 - 9:49 am -
Thank you everybody, for the suggestions given till now......
By Mark on 14 December, 2009 - 12:22 pm -
For Windows applications, check out Automated Solutions website.
Modbus Master ActiveX Control...
By Mark on 14 December, 2009 - 10:13 am -
I find the master at www.simplymodbus.ca works well and is easy to use. There's almost no learning...
By Darrin Hansen on 14 December, 2009 - 8:45 am -
Modscan32 from www.win-tech.com is one of the most popular.
Darrin...
You could try ModMaster from:
http://wingpath.co.uk/modbus/modmaster.php
Frank O'Gorman
...
Backup HMI for XP machine
New Replies:
By MIKEVI on 29 December, 2009 - 7:30 pm -
Its not entirely clear from your post what you are trying to do. You said you tried to backup the...
Looking for simple calculations to size solenoid coils and armatures for known magnetic forces. Used in space and on satellites.
New Replies:
By Santa Fe Motors on 29 December, 2009 - 11:31 am -
Dave,
This problem is common in designing valves used in space. I am sure there are some...
flow calculation to extract square root from Dp of a orifice plate installed on natural gas pipline
New Replies:
1. Unless the pressure is constant you will also have to compensate for that as well.
2. Basic...
none
what will happen if my neutral switch/contactor suddenly open circuit? contactor coil faulty during synchronising and at peak loads.
Communications breakdown between DCS and PLC using Modbus communication between PLC and DCS.
New Replies:
By Rudi on 29 December, 2009 - 4:42 am -
I think the only solution that helps with failing hardware is to create redundancy. With modbus you...
By Harvard on 24 December, 2009 - 11:15 am -
See www.national.com/an/AN/AN-1057.pdf which is titled "10 Ways to Bullet Proof your...
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