Disparity in process range and control system range

I am in the process of ordering a hydrostatic level measurement sensor. This sensor is to be used to measure water level in a sump 4m high. The sensor however can only measure from 10cm from the bottom of the sump because it cannot get right to the bottom. This means an offset of 10cm. The technology is 4-20mA and the system specification allows an uncertainty of 1% in measurement.
The I&C system was programmed with a range of 0.1 -4m (0.1 to take care of the offset mentioned earlier) but then the upper limit should have been 4.1 to cater for a sensor with a range of 4m. Because we do not want to incure additional costs in having to update the I&C system (from 4 to 4.1m) we are planning on living with this disparity.
My question is how do I account for the disparity, knowing that the sensor has a range of 0-4m, but the I&C system is 0.1 - 4m?
In terms of thresholds, the max water level that triggers the sump pumps is 3.5m. Am I correct in saying that with the I&C, we are okay up till 3.9m (ie 0.1 - 4m)? Or is there some calculation I have to take into account '4-20mA' wise?
Thanks a lot.

How about some basic math?
You sensor will give you out the value it sense, that could or couldn't be the value of interest
What you wanted:
Actual_water_level_in_meter = 4m/16mA*($measured_current-4mA) +0.1m
What you get:
System_output_waterlevel= 3.9m/16mA*($measured_current-4mA)+0.1m
So all you need is a correction factor of 4/3.9 to get the actual level or the factor 3.9/4 for new limits ...
At least: Do a field calibration: all you need is a 4m tube surrounding the sensor ....
Greetings from Germany
Henrik
LV since v3.1
“ground” is a convenient fantasy
'˙˙˙˙uıɐƃɐ lɐıp puɐ °06 ǝuoɥd ɹnoʎ uɹnʇ ǝsɐǝld 'ʎɹɐuıƃɐɯı sı pǝlɐıp ǝʌɐɥ noʎ ɹǝqɯnu ǝɥʇ'

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Budgeting and control system

friends,
we implemented fi, co, mm, sd, pp and project systems. we want to implement budgeting and control system. what is the exact flow of BCS in between these modules,
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Hi,
Prepare Funds Management Installation
When implementing the Funds Management Government component, you should take care to carry out the individual steps in a particular order. You enter the required preconfigurations and functions at different points in the SAP System.
So when implementing Funds Management, you should observe the following sequence:
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For more information, see sections:
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Note that the additional account assignments "Commitment item", "Funds center" and "Fund" will only accept input if you mark the relevant fields as required or optional entries. This applies, however, only to G/L accounts whose commitment items are assigned with the 30 such as a revenue account. G/L accounts whose commitment items are assigned with a transaction other than 30 should have the error hidden.
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Regards,
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In TDMS, can central system and control system on different clients?

I think they should be on the same client. Is that mandatory?
Thanks!

When you generate a RFC connection in TDMS there are four system entry, and you have to enter the client noumber also so i think you can keep differenct client for Central and Control System.
Regards,
Subhash

Process chain and Control M

Hi Gurus
We are designing process chain for our BW solution.
We have identified the dependancies of various loads which includes flat file loads and loads from R/3.
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Hi Kris,
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If both jobs are running at same time, then it is better to apply some wait time on BW jobs(in process chians).
hope this helps

XI Sender file adapter - How to process data and control files.

Hello all,
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Is there an elegant and robust way to accomplish this?
Thanks for your help.

Hi Yves,
in my opinion there's no problem with files currently being written in combination with a polling file adapter because the final file name should be available only when the file is transferred completely. I'm using different file sender adapters very often and never had any problems. After picking up the files I move them to the corresponding archive folders mentioned in the adapters so that a second processing cannot occur.
Regards
Ralph

Control Systems Engineer

Control Systems Engineer
Seattle Safety – Kent, WA 98032
Seattle Safety is looking for a qualified individual to fill an opening for Control Systems Engineer. Seattle Safety designs, manufactures, and installs advanced crash test sled systems that are used in automotive and aeronautical industries. The duties of the Control Systems Engineer include:
• Experience designing, testing, and optimizing industrial automation and control systems utilizing modern and classic control methodologies such as PID. Experience with neural networks.
• Strong background in mathematics, physics, and signal analysis.
• Electrical / Electronic design experience including automation.
• Design, troubleshoot, and test software written in LabVIEW 8.6 & 2012 and C.
• Help customers diagnosing electrical, software, and mechanical problems with their systems. This will sometimes involve working odd hours for customers on the other side of the planet.
• Support installations of crash test equipment at on-site locations worldwide.
• Provide round the clock technical support for team members locally and abroad in subject matters concerning performance, installation, and maintenance of software and data acquisition hardware.
• Prepare and maintain software flowcharts, layouts, and diagrams as needed to demonstrate solutions to outside staff.
• Work with current team members to restructure existing crash test software.
• Supports all aspects of software application design, development, testing, deployment, and support.
• Perform software testing at a unit and integration level to ensure expected behavior.
• Comment code clearly and consistently throughout the development process.
• Maintain professional relationships with suppliers and vendors in order to keep up with industry developments.
• Candidates must be located in the US, the northwest would be ideal.
Furthermore, the ideal candidate would possess the following skills:
• Advanced or expert knowledge of LabVIEW.
• Advanced or expert knowledge of C.
• Expert knowledge of industrial controls.
• Familiarity with a minimum one low-level programming language (C#, VB, Ladder, etc)
• Familiarity with data acquisition concepts and hardware.
• Discipline and organization with respect to software maintenance and version management. Experience with source configuration management tools a plus (CVS, ClearCase, Perforce, etc.)
• Experience with sophisticated feedback control systems.
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Dear Sir/Mam,
I’m particularly interested in the position of Control System Engineer, which relates strongly to my more than six years of experience in designing various applications for testing and automation. I am Certified LabVIEW Associate Developer & prepared for CLD also. Currently I am leading a team for the project for Machine Automation and remote diagnostics, and I believe I meet all the essential criteria of the position. My work at my current organization has been rewarding and productive. However, I wish to expand my career further, into the application designing and development role. The position also has a definite correlation with my practical knowledge and experience. You’ll see from my CV that I have been deeply involved in designing and development of various applications based on Programming techniques, hardware and network designing. I feel that I am well qualified to make an effective and useful contribution to design good application which will be market acceptable.
I’m enthusiastic about the chance to participate in a meaningful role with an industry leader in the field.
Thank you for your consideration of my application. Please contact me should you require any further information,
Yours sincerely,
Mohit Monga
Mohit Monga
Attachments:
Mohit Monga_CV.doc ‏159 KB

Recent graduated Control-Systems (embedded) enginneer, with experience in France/lebanon/Switzerland Looking for a Job With Labview

I am currently recently graduated from the University of Technology in Belfort-Montbeliard (France).
Master’s grade of “Electrical and control systems engineering”.
I am currently looking for a job in automation, control systems and electronic domain (I prefere LabView Developpement)
Salim DARWICHE
1 rue antonin artaud
31320 castanet tolosan
Tel: 0033.6.85485107
Email : [email protected]
Nationalities :
- French
- Lebanese
Date and place of birth:
April 18, 1986
Toulouse,
France
Education
2009
Master in Electrical and Control Systems Engineering
Option Embedded
systems
University of technology of Belfort-Montbliard france
2006 University
Diploma in Industrial and Maintenance Engineering
DUT Degree Equivalent to 3 years of
technical studies
Institute of technology of Saida
Lebanon
Experience
February
July 2009 Galley-Technologies (Neuchatel-Switzerland)
Mission:
Development of
Labview Modules for Pharmaceutics and Robotics
industries
Realization(s):
Communication and data-Analyse Software using
TCP/IP:
- Development of a software (Labview Programming) that would permit data
transfer between many pharmaceutical ovens, in order to analyse all production cycle, and test
the conformity of the final products.
5 Axis robot simulation software:
Concept and development of simulation tool for a robot working cycle
September 2007
February 2008 Valeo VSS (Paris France)
Mission:
Qualification and management of
automobile electronic components
Qualification of specific electronic components
Making sure that all electronics components will be qualified on time before the
Start-of-Project
- Discussion between me, Valeo supplier and Valeo Project Manager in order
to grant Valeo quality standard Specifications or to approve supplier deviations.
Management of electronic qualification documents on Valeo ePLM system.
- Participating to
daily quality reviews meetings and brainstorming in order to apply a PDCA (plan Do Check
Act)
Management of Valeo DSA products under IMDS Base
- Management and
declaration of Valeo Division Systems Access products under IMDS base (international Material
data systems)
- Creating MDS sheets then sending them to Automobile
Constructors.
February June 2006 United-Group Machinery
(Beirut-Lebanon)
Mission:
Renovating a bag-filling
machine
Realization(s):
Mechanical system
- Drawing all parts of
the machine (3D), assembly and motion using Autodesk Inventor.
- Unmount, replacing bad
parts then assembly of the machine.
- Integrating of a weigher machine to the top of the
bag-filling machine.
Control system
-Removing old control system and
integrating a PLC and a control panel
-Programming the PLC (Delta type) with Ladder
diagram.
Knowledge
Languages
French
and Arabic: Native languages.
English: fluent, TOEIC 890/990 Test of English for
International Communication.
Spanish: Intermediate.
Automation
- Labview,
Matlab Simulink
-Programming DSP Controller TMS320LF2407.
-Programming in languages:
assembler, C.
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Grafcet-
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Electronics
-Programming in
VHDL.
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Workbench, Proteus, Kicad).
Electrical
- Machines D.C. current, synchronous,
asynchronous, electrical supply networks.
Various
- CAD: AutoCAD, Autodesk
Inventor, Mastercam, Programming of machines with numerical control CNC (languages Num, Fanuc,
Fagor).
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Message Edité par salimo le 11-04-2009 04:35 PM
~~~~~~~~~~~~~~~~~~Looking for a LABVIEW JOB (In EUROPE)>~~~~~~~~~~~~~~~~~~
**The Best Way To Predict**The**Future Is To Invent It**
Attachments:
CV_Salim_Darwiche_S_12_10_09.doc ‏77 KB
CV_SalimDARWICHE_EN_S.doc ‏229 KB

Message Edité par salimo le 11-04-2009 04:36 PM
~~~~~~~~~~~~~~~~~~Looking for a LABVIEW JOB (In EUROPE)>~~~~~~~~~~~~~~~~~~
**The Best Way To Predict**The**Future Is To Invent It**

Control Systems Developer (High Point, NC)

Computerway Food Systems, located in High Point, NC, is looking for a Controls Developer to join it's team.
CFS provides Inventory Management and Control Systems to the food industry.
General Overview:
The successful applicant will assist the Controls Systems Manager in designing, maintaining and supporting new and existing systems. Daily responsibilities include coding, testing, documenting, training, and development support of these systems. Applicants should possess a good understanding of electrical engineering principles, coding practices, operating systems, and networking.
This individual must be a team player and be able to communicate well with others.
Helpful skills / knowledge :
Electrical engineering / Control systems
LabVIEW Programming language
Familiarity with .Net framework / architecture
General understanding of Databases
CFS offers Competitive wages, paid vacation and holidays as well as medical, dental, profit sharing and 401K plan.
If interested in learning more, visit our website at www.mycfs.com to apply email resume to [email protected]

Applicant must be a legal US resident.

SSIS and CDC - Incorrect state at end of "Mark Processed Range"

The Problem
I currently have CDC running on a table named subscription_events. The corresponding CT table is being populated with new inserts, updates, and deletes.
I have two SSIS flows that move data from subscription_events into another table in a different database. The first flow is the initial flow and has the following layout:
The Import Rows Into Vertica step simply has a source and a destination and copies every row into another table. As a note, the source table is currently active and has new rows flowing into it every few minutes. The
Mark Initial Load Start/End steps store the current state in a variable and that is stored in a separate table meant for storing CDC names and states.
The second flow is the incremental flow and has the following layout:
The Import Rows Into Vertica step uses a CDC source and should pull the latest inserts, updates, and deletes from the CT table and these should be applied to the destination. Here is where the problem resides; I
never receive anything from the CDC source, even though there are new rows being inserted into the
subscription_events table and the corresponding CT table is growing in size with new change data.
To my understanding, this is how things should work:
Mark Initial Load Start
CDC State should be ILSTART
Data Flow
Mark Initial Load End
CDC State should be ILEND
Get Processing Range (First Run)
CDC State should be ILUPDATE
Data Flow
Mark Processed Range (First Run)
CDC State should be TFEND
Get Processing Range (Subsequent Runs)
CDC State should be TFSTART
Data Flow
Mark Processed Range (Subsequent Runs)
CDC State should be TFEND
Repeat the last three steps
This is not how my CDC states are being set, though... Here are my states along the same process.
Mark Initial Load Start
CDC State is ILSTART
Data Flow
Mark Initial Load End
CDC State is ILEND
Get Processing Range (First Run)
CDC State is ILUPDATE
Data Flow
Mark Processed Range (First Run)
CDC State is ILEND
Get Processing Range (Subsequent Runs)
CDC State is ILUPDATE
Data Flow
Mark Processed Range (Subsequent Runs)
CDC State is ILEND
Repeat the last three steps
I am never able to get out of the ILUPDATE/ILEND loop, so I am never able to get any new data from the CT table. Why is this happening and what can I do to fix this?
Thank you so much, in advance, for your help! :)
Edit 1
Here are a couple of articles that sort of describe my situation, though not exactly. They also did not help me resolve this issue, but it might help you think of something I can try.
http://www.bradleyschacht.com/understanding-the-cdc-state-value/
http://msdn.microsoft.com/en-us/library/hh231087.aspx
The second article includes this image, which shows the ILUPDATE/ILEND loop I am trapped in.
Edit 2
Last week (May 26, 2014) I disabled then re-enabled CDC on the subscription_events table. This didn't change anything, so I then disabled CDC on the entire database, re-enabled CDC on the database, and then enabled CDC on the
subscription_events table. This did make CDC work for a few days (and I thought the problem had been resolved by going through this process). However, at the end of last week (May 30, 2014) I needed to re-load the entire table via
this process, and I ran into the same problem again. I'm still stuck in this loop and I'm not sure why or how to get out of it.
Edit 3
Before I was having this problem, I was having a separate issue which I posted about here:
CDC is enabled, but cdc.dbo<table-name>_CT table is not being populated
Could running these commands have created this problem for me on SQL Server?

Hi Keolanui,
Thank you for your question.
I am trying to involve someone more familiar with this topic for a further look at this issue. Sometime delay might be expected from the job transferring. Your patience is greatly appreciated.
Regards,
Mike Yin
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PI Control Error Between Process Variable and Set Point

I've developed a PI program that uses measurements from a pressure transducer as the process variable to control air pressure released from a motorized valve. The program works great at lower pressures, but as the set point pressure increases the error between the process variable and set point increases. I've tried several things....adjusting the P seems to initially increase the overshoot but the process variable always settles down below the set point....tried adjusting the EGU min and max values but no real pattern develops with this. It appears as the process variable get closer to the max EGU value of 70000 pascals the error increases.
I've attached three screen shots showing the process variable curve and setpoint value. The graph of interest is the one in the upper right hand corner.
Any recommendation or advice would be appreciated.
tks, Terry
Attachments:
Low Pressure.JPG ‏267 KB
High Pressure.JPG ‏398 KB
Mid Pressure.JPG ‏266 KB

Kyle,
First off....I appreciate your comments. No...there is no value is system represented as U16.
Actually errors start to develop quite a bit before the maximum. If you look at the mid pressure.jpg file you'll notice that the set point (~28125 Pascals) and process variable (~25625 Pascals) are roughly off by about 2500 Pascals. Then if you look at the high pressure.jpg file you'll notice that the set point (~53000 Pascals) and process variable (~45500 Pascals) are roughly off by about 7500 Pascals. Therefore it appears as the setpoint pressure increases towards maximum the error tends to increase.
I was curious about something....the set point value I'm inputting into the PID.VI , shown in the high pressure.jpg file, is from EGU to percent.VI. It would look exactly like the EGU to percent VI feeding the process variable input of the PID.VI with the set point value feeding the EGU to percent.VI input. Would I be better off feeding the actual set point value to the PID.VI input instead of percentage?
Thanks, Terry

SAP TDMS add on setup on central/control , sender and reciever systems

I found that SAP TDMS is shipped in the following add-ons:
DMIS: Contains general functions, for example for the process monitor and for the technical data transfer
DMIS_CNT: Contains TDMS-specific functions and some of the process types
DMIS_EXT: For various additional process types (reduction scenarios) for SAP TDMS; currently, it contains only the process type for business process library
DMIS_BSC: For the process types to be used with SAP BI or CRM systems
DMIS_HR: For the process types to be used in the context of SAP Human Capital Management (HCM)
I have read TDMS master guide under section 3.4.1 Setting up the TDMS Server. There is a reference to SAP Note 970531 which is for DIMS setup and there is also reference to SAP note 970532 which is for DMIS_CNT setup.
I would like to know if DMIS_EXT,DMIS_BSC and DMIS_HR need to be setup on TDMS central/control server , sender and reciever or only need to be setup on central/control server for respective scenario realization.
Best Regards
Mohammed Ashraf

All the add-on components need to be installed in all the system (sender, receiver, central, control) in the landscape.

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Mullaly75 wrote:
I assume u guys don't understand what open source software is
Yes, I think most of us do understand what open source software is. It sounds as if you don't. Here's some information:
Open-source software (OSS) is computer software that is available in source code form: the source code and certain other rights normally reserved forcopyright holders are provided under an open-source license that permits users to study, change, improve and at times also to distribute the software.
Open source software is very often developed in a public, collaborative manner. Open-source software is the most prominent example of open-sourcedevelopment and often compared to (technically defined) user-generated content or (legally defined) open content movements.
from http://en.wikipedia.org/wiki/Open_source_software
Yes, Tom Wu of Stanford wrote a paper on something called Secure Remote Access Protocol. It's a form of Asymetric Key Exchange and has nothing to do with hacking anything. It's actually intended to protect data.

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If I click a link on my desktop or in any other program (while Firefox is open and running), I get this message: "Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system." There's about a billion links for this if you Google it, but they all say that Firefox wasn't shut down properly. (OK, maybe not ALL of them, but if the needle is in that haystack, I haven't yet found it.) That's not the issue in my case since I haven't shut FF down at all.
== This happened ==
Every time Firefox opened
== IDK

This began to happen to me when I tried to run two separate profiles simultaneously on the same installation of firefox with -no-remote

I deleted the profile and firefox4 and then downloaded firefox4 again. But when i click firefox it says Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process,or restart your system.HELP!

somehow i couldn't get rid of one website called www.searchqu.com/405 set as my homepage... I tried all solutions given to change the homepage but whenever i restarted firefox that homepage used to come automatically.. So, I deleted the profile (even from recycle bin!!) and deleted the firefox and downloaded it again hoping to get my problems fixed (which didn't happen!) because i'm getting dialog box saying- Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system.

You don't say which operating system you have installed?
Assuming it's Windows, right click a blank part of the Windows Taskbar and go to Task Manager. Then click the ''Processes ''tab, find '''firefox.exe''' and then right click it and choose '''End Process'''.

Disparity in process range and control system range

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