Incorrect reading from Thermcouples

I sure hope someone can help me with this.
My application: I have wired six Omega Type T theromocouples into a 40' long refrigerator with three compartments. The refridgerator is set at -30 degrees Celsius. Each room contatins two thermocouples. I am using a field point module to read the thermocouples and then send this data via ethernet (xover cable) to a PC. I use the temperatures in each room to make a series of decisions ( do I turn on a set of heaters to make the room warmer or turn them off to make them colder). I also store the temperatures into an excel file.
My problem: My program seems to run fine (ok there are a few small problems). However, my thermocouples are giving me weird readings. In each room, I read two completely different temperatures. For example. in room 1 one thermocouple reads -13 C while the otehr reads -29 C. This is the same for room 2 and room 3. When I warm up the rooms by turning on the heaters the thermocouple that reads the lower temperature begins to show an increase in temperature while the thermocouple that reads the higher temperature shows a slight decrease in temperature (never more than -31C). Additionally my room 3 does not register a temperature change at all (even though I know the heaters are on and have went in the room to check). When I was running the application prior to installing my thermocouples into the refridgerator they were running fine. Of course now my thermocouples must travel at most 35' to reach the FP module when before they only traveled 2'.
Does anyone have any expereince or advice for m? This is all very new and I can not figure out what the problem is. I have checked to make sure they were wired up correctly. My thermocouples are "butt spliced" to thermocouple wire wheich runs (at max 35') to the FP module. I have also refered to the Knowledge base article on calibrating my CJC Sensor (under Analog INput #2) in MAX. That did not seem to help any. Any help at all please...I am getting desperate!
Thanks!

Matt,
How cold is it where the FieldPoint unit is located? It is roughly -30C...It is located in an enclosure and other than the TC problem everything is running fine. I could try changing the temp in the reefer to a warmer temp and see if performance is affected.
Have you tried unplugging and re-plugging each of the TC-120 and CB-3 several times since the unit was placed in the cold environment?No do you think that would help...I will try that this afternoon.
Are the CJ and sensors reading properly with MAX, or with the short, test sensors? I am unsure if the CJC is reading proerply. I do not know the actual temperature in the compartment but from what I can tell it is in the ballpark of the refridgerator's set temperature. I have not tried connecting another TC I planned on doing that this afternoon (this is my second job). My thermocouples are attached to shielded & twisted thermocouple wire (from Omega). The wire runs any where from 10' to 40' to the FP module. In th e"control" room where it is -30C they terminate to the FP module. Last night I warmed up the wire in the control room and notice that my temperature readings had changed. Do you think the wire itself could be the problem? Now I plan on attaching a TC to one of the open channels and checking the readings. Then I was going to check the the temp of the TCs in each room (comparing the measurement with an independent temperature device). I really hope it is not the wire b/c that woudl be a real pain trying to run it again!
Thanks for all of your input Matt!

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Duplicate - delete
Ryan Vallieu
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Matt,
How cold is it where the FieldPoint unit is located? It is roughly -30C...It is located in an enclosure and other than the TC problem everything is running fine. I could try changing the temp in the reefer to a warmer temp and see if performance is affected.
Have you tried unplugging and re-plugging each of the TC-120 and CB-3 several times since the unit was placed in the cold environment?No do you think that would help...I will try that this afternoon.
Are the CJ and sensors reading properly with MAX, or with the short, test sensors? I am unsure if the CJC is reading proerply. I do not know the actual temperature in the compartment but from what I can tell it is in the ballpark of the refridgerator's set temperature. I have not tried connecting another TC I planned on doing that this afternoon (this is my second job). My thermocouples are attached to shielded & twisted thermocouple wire (from Omega). The wire runs any where from 10' to 40' to the FP module. In th e"control" room where it is -30C they terminate to the FP module. Last night I warmed up the wire in the control room and notice that my temperature readings had changed. Do you think the wire itself could be the problem? Now I plan on attaching a TC to one of the open channels and checking the readings. Then I was going to check the the temp of the TCs in each room (comparing the measurement with an independent temperature device). I really hope it is not the wire b/c that woudl be a real pain trying to run it again!
Thanks for all of your input Matt!

VISA Read gets incorrect data from serial connection

I am having difficulty using the VISA functions in LabVIEW to read data from a virtual COM port. Data is being sent from a serial to USB chip via a USB connection using OpenSDA drivers. I have a python program written to read from this chip as well, and it never has an issue. However, when trying to achieve the same read in LabVIEW I am running into the problem of getting incorrect data in the read buffer using the VISA Read function.
I have a VISA Configure Serial Port function set up with a control to select the COM port that the device is plugged into. Baud rate is default at 9600. Termination char of my data is a newline, which is also default. Enable termination char is set to true. A VISA Open function follows this configuration, and then feeds the VISA Resource Name Out into a while loop where a VISA Read function displays the data in read buffer. Byte count for the VISA Read is set to 20 so I can read more of the erroneous datat, however actual data will only be 6-12 bytes. The while loop has a wait function, and no matter how much I slow down the readings I still get incorrect data (I have tried 20ms thru 1000ms).
The data I expect to receive in the read buffer from VISA Read is in the form of "0-255,0-255,0-255\n", like the following:
51,93,31\n
or
51,193,128\n
And occasionally I receive this data correctly, however I intermittently (sometimes every couple reads, sometimes a couple times in a row) get incorrect readings like this:
51,1\n
51,193739\n
\n
51,1933,191\n
51,,193,196\n
51,1933,252
51,203,116203,186\n
Where it seems like the read data is truncated, missing characters, or has additional characters. Looking at these values, however, it seems like the read was done incorrectly because the bytes seem partially correct (51 is the first number even in incorrect reads).
I have search but haven't found a similar issue and I am not sure what to try from here on. Any help is appreciated. Thanks!
Attachments:
Serial_Read_debugging.vi ‏13 KB

The first thing is that none of the error clusters are connected so you could be getting errors that you are not seeing. Are you sure about the comm parameters? Finally, I have never had a lot of luck looking for termination characters. You might want to just capture data and append each read into one long string just to see if you are still seeing this strangeness.
What sort of device is returning the data? How often does it spit out the data? How much distance is there between it and your computer? Can you configure it append something like a checksum or crc to the data?
Mike...
Certified Professional Instructor
Certified LabVIEW Architect
LabVIEW Champion
"... after all, He's not a tame lion..."
Be thinking ahead and mark your dance card for NI Week 2015 now: TS 6139 - Object Oriented First Steps

Crystal Report that reads from an XML file Datetime or Date

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Lightroom 4.4 keeps crashing saying "Lightroom encountered an error when reading from its preview cache and needs to quit" please help. I've tried reinstalling it and everything Windows 8.1

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Reading from a file. How to ask the user for file name at run time????

I have the code to read from a file but my problem is how to prompt the user for the file name at run time.
import java.io.File;
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import java.util.InputMismatchException;
import java.util.Scanner;
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When I use the code that you provided me with, does it matter where the file is, or will it look through everywhere on the hard drive to find a match?
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run-single:
java.lang.NoClassDefFoundError: NamedFile
Exception in thread "main"
Java Result: 1
BUILD SUCCESSFUL (total time: 3 seconds)
import java.util.Scanner;
import java.io.*;
class NamedFileInput
public static void main (String[] args) throws IOException
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HT4236 Syncing photos using iTunes in windows revealed this error message "iPad Jayvee cannot be synced because it cannot be read from or written to ." Please advise asap how to resolve the issue. Thanks!

Please advise how to resolve error message - cannot be synced because it cannot be read from or written to.

Hello Janet,
I would recommend this article named 'Disk cannot be read from or written to' when syncing iPod or 'Firmware update failure' error when updating or restoring iPod found here http://support.apple.com/kb/ht1207
Outdated operating system software
Make sure you have the latest updates for your operating system, which may include improvements for device connections. For example, many USB and FireWire improvements have been included in Windows Service Packs.Check for Mac OS X downloads. Check for Windows updates.
Computer needs updates
Make sure you have the latest updates available for your specific computer model (or components for home-built PCs). These are usually available for download on the support website for the maker of the PC (or component). Many USB updates are listed as "Intel chipset" or just "chipset" updates on PC manufacturer's support and download websites.
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Some software can interfere with iTunes, making it unable to write files to your iPod. Think about what software you have installed, and try disabling any add-ons that might be interfering with iTunes. Check your suspected software's documentation or contact the software maker if you need assistance with disabling the application. Out-of-date or incorrectly configured security software frequently causes this issue. See these steps for identifying and troubleshooting third-party security software.
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If one of your music files or photos is damaged, iTunes may display one of these errors when transferring that file to the iPod. If you identify a file that is causing the error, try deleting that file and reimporting it from a backup file or from the original source. You may be able to repair files by repairing the disk (see the solutions in the next section).
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These errors can also appear if the format of your computer's hard drive or your iPod disk is damaged.
To repair your computer's hard disk—Mac OS X users, read this article for instructions. Windows users, search the Help system in Windows for chkdsk to get more information on checking and repairing the disk structure.
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Any thoughts?

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FI/CO - Reading from COSP to COEP but cannot get PO and Matnr

Hi guys, first question on this forum so forgive me if i post incorrectly.
I have created a report that reads budgeted,planned,commitment and actual values for CO/FI (PS).
This reads from prps to cosp and onto coep where the latter i need to retrieve the purchase order number, the materials and finally the profit segment number for where i select from ce40max_acct to determine product hierarchy etc.
The problem i am having is that when reading coep from cosp (and using an outer join as not all planned etc records will have an actual record) i cannot distinguish between different Purchase orders (where they have the same material,cost centre,controlling area). This is resulting in my figures getting messed up.
Hope this is somewhat clear but i will attach the code that i am using so that someone here may see what i am doing wrong.
SELECT BPOSID BPOST1 AKSTAR BPKOKR BPBUKR EPAOBJNR
         EEBELN EMATNR
         AOBJNR AVRGNG ATWAER AVERSN
         AWOG001 AWOG002 AWOG003 AWOG004
         AWOG005 AWOG006 AWOG007 AWOG008
         AWOG009 AWOG010 AWOG011 AWOG012
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         AND   B~PBUKR EQ P_BUKRS
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Thanks for any ideas
I guess what i am asking is........from a record in COSP how can i find the correspoding unique record in COEP !
Message was edited by:
        ED MORRISSEY

Hi,
I have already developed the report which gives the project / WBS data like:
- Planned values
- Budget
- Commitments
- Actaual cost ( billed / Unbilled )
These are the table i get these info from.
1. Planned values - COSP with OBJNR / VERSN / GJAHR and COSP-VRGNG = 'RKP1'
2. Budget         - BPEG with OBJNR = wbs obj no / WRTTP = '41' / VORGA = 'KBUD'
3. Commitment     - COOI with LEDNR = '00' and OBJNR = wbs object no.
4. Actual cost    - COVP ( this is join of COEP and COBK) with LEDNR = '00' and OBJNR = wbs object number
Let me know if you need any information.
Regards,
RS

How to read from a certain location is a file?

hi! i am new to programing and i have a problems abt reading from a file. i have write the following to a file using FmtFile :
10 (a numbers)
name,phone,product (some strings)
9 (a numbers)
when i user ScanFile to read the second number(9 in the above example), i got a wrong value. the command i use is:
ScanFile (filehandle, "%d", &number1);
ScanFile (filehandle, "%s[t44]%s[t44]%s",name, phone product);
ScanFile (filehandle, "%d", &number2);
number1 and number 2 are integers and name, phone and product are char arrays.
can anyone tell me where have i gone wrong? or maybe someone can tell me how can i read the 2nd number without reading the 1st number
and the strings.

Let's look at your file: if I correctly interpret your question, one row in it should like like this:
10,name,phone,product,9
In this case you could use the following formatting string to read all data from the string:
"%d[x]%s[xt44]%s[xt44]%s[xt44]%d"
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Maybe your problem is that in the file you don't have separators between strings and numbers: in this case the last "%s" should read the '9' inside the last string and the subsequent "%d" matches with incorrect area in the file (end-of-line or next row).
Hope this help
Proud to use LW/CVI from 3.1 on.
My contributions to the Developer Zone Community
If I have helped you, why not giving me a kudos?

SQLDeveloper tool script execution aborts with Error report: No more data to read from socket

Hello,
Strange behaviour of the SQLdeveloper tool while executing script with typical DDLs like:
Create Table,
Alter Table
Create Trigger ( use of :new and : old attributes in tehe body of trigger ).
Insert Into....
Scripts works ok from time to time.
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The version of SQLDeveloper is
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Thanx for any reference or direction or hint for upgrade or experience.
Greetings,

Welcome to the forum!
Please provide the 4 digit Oracle version (result of SELECT * FROM V$VERSION) for the source and target servers; 10g and 11g are not versions. You also mention sql developer so what is the exact version you are using?
>
If delete the "OF out_a.ALLOCATION_ID" of the for update clause of CURSOR exist_allocation, this prolbem will not happen, and the code is comple succesfully on sql developer for oracle 10g.
>
Please clarify what works and what doesn't work because your statements are both incorrect and misleading.
You can't delete the "OF out_a.ALLOCATION_ID" of the for update clause or you would get a syntax error by leaving FOR UPDATE OF with nothing specified after it.
Also you original statement said
>
But when compile a package which is fine on oracle 10g
>
But now you say that if you delete the "OF..." the problem doesn't happen and the code compiles on 10g.
Does the original code compile on 10g or not? Does it compile on 11g or not? After the original code is migrated to 11g does it compile? That is, the code is there can you manually compile it?

Error report:No more data to read from socket when compile package

We are going to migrate db from oracle 10g to oracle 11g. But when compile a package which is fine on oracle 10g, an exception "Error report:No more data to read from socket" throws on sql developer and break the connection. We have researched the issue and found if modify some code on a cursor, the issue will not happen.
code:
PROCEDURE DELETE_MANU_INTERV_BORROWS(
p_borrow_id IN NUMBER,
p_asset_id IN NUMBER,
p_nsb_coll_type IN VARCHAR2,
p_nsb_coll_code IN VARCHAR2,
p_branch_code IN VARCHAR2,
p_settle_date IN NUMBER,
p_trans_type IN VARCHAR2,
p_status OUT VARCHAR2,
p_shorts_cursor OUT SYS_REFCURSOR
IS
var_end_settle_date GEC_IM_ORDER.SETTLE_DATE%type;
CURSOR exist_allocation IS
SELECT out_a.ALLOCATION_ID FROM
GEC_ALLOCATION out_a,
GEC_BORROW b,
GEC_IM_ORDER o,
GEC_TRADE_COUNTRY gc,
(SELECT f.FUND_CD, f.BRANCH_CD, tc.TRADE_COUNTRY_CD, NVL(gc.COLLATERAL_CURRENCY_CD, gbk.COLLATERAL_CURRENCY_CD) as COLLATERAL_CURRENCY_CD
FROM GEC_FUND f
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LEFT JOIN GEC_G1_COLLATERAL gc ON gc.G1_BOOKING_ID = gbk.G1_BOOKING_ID
LEFT JOIN GEC_TRADE_COUNTRY tc ON gc.TRADE_COUNTRY_CD = tc.TRADE_COUNTRY_CD
) loan_info
WHERE b.BORROW_ID = out_a.BORROW_ID AND
out_a.IM_ORDER_ID = o.IM_ORDER_ID AND
o.FUND_CD = loan_info.FUND_CD AND
o.ASSET_ID = p_asset_id AND
gc.TRADE_COUNTRY_CD = o.TRADE_COUNTRY_CD AND
o.TRANSACTION_CD = p_trans_type AND
loan_info.COLLATERAL_CURRENCY_CD = p_nsb_coll_code AND
loan_info.BRANCH_CD = p_branch_code AND
o.SETTLE_DATE >= p_settle_date AND
o.SETTLE_DATE <= var_end_settle_date AND
b.STATUS = GEC_CONSTANTS_PKG.C_BORROW_MANUAL
ORDER BY out_a.ALLOCATION_ID ASC
FOR UPDATE OF out_a.ALLOCATION_ID;
If delete the "OF out_a.ALLOCATION_ID" of the for update clause of CURSOR exist_allocation, this prolbem will not happen, and the code is comple succesfully on sql developer for oracle 10g.
Does anybody have any idea? I've googled the similer problems but still can't find a clue. I'll appreciate any help.

Welcome to the forum!
Please provide the 4 digit Oracle version (result of SELECT * FROM V$VERSION) for the source and target servers; 10g and 11g are not versions. You also mention sql developer so what is the exact version you are using?
>
If delete the "OF out_a.ALLOCATION_ID" of the for update clause of CURSOR exist_allocation, this prolbem will not happen, and the code is comple succesfully on sql developer for oracle 10g.
>
Please clarify what works and what doesn't work because your statements are both incorrect and misleading.
You can't delete the "OF out_a.ALLOCATION_ID" of the for update clause or you would get a syntax error by leaving FOR UPDATE OF with nothing specified after it.
Also you original statement said
>
But when compile a package which is fine on oracle 10g
>
But now you say that if you delete the "OF..." the problem doesn't happen and the code compiles on 10g.
Does the original code compile on 10g or not? Does it compile on 11g or not? After the original code is migrated to 11g does it compile? That is, the code is there can you manually compile it?

Unable to read from the registry

I have a button on one of my forms that needs to read from the registry (get default web browser location).
When I am logged in as a member of the administrators group I can perform the operation. When I am logged in as a member of the Power Users group I cannot read the value.
Is this a known issue in Windows 2000 Professional? Is there a techincal paper or resource that shows this?
Or am I doing something incorrectly?
Please Help . . .

And Sharepoint forum is here:
http://social.technet.microsoft.com/Forums/en-US/category/sharepoint/
Regards,
Miya
Miya Yao
TechNet Community Support

Read From Measurement File doesn't work

I am using LV 8.0 and have a daq program that writes data to a .lvm file every two seconds. When I use the Read From Measurement File block the resulting waveforms have dt set to 0 rather than 2 as it says in the file. All the y values are good but I have to ue the Build Waveform function to set dt to 2 but I should not have to do that right? I can see dt is 0 using a probe on the output of the Read Measurement Function.. I have attached a sample .lvm file but I have changed the extension because this site would not accept a .lvm file!
Phil
Attachments:
Profile.xls ‏6 KB

Jeff B,
Sorry for the delay, I have been travelling for a couple of weeks. I took a look at the profile and your are right, it was modified incorrectly. When the data are taken and stored as a CSV file using Write to Labview Data file, the program always sets the sample number to 1 because it is being called to append one sample each time through the timing loop. Since the number of samples is wrong, I was modifying the number aftewards to get the read to work. After your comment, I used jedit to modify it rather than excel and it worked. I could change the program to store the data only once after the run is finished to eliminate having to mess with the data. I don't know how else to fix it.
Thanks,
Phil

Ipod incorrect update from itunes

I recently connected my 30GB Ipod Video to my laptop running Windows XP Pro. Once connected itunes said it needed an update once updated it doesn't work now. On the screen of the ipod whilst disconnecte4d it says to connect to itunes and reformat it. Also trying to access it through My computer when its in disk mode or normal mode it says it isn't formatted and asks if i want to e format it. I don't want to format it because there are files on iot that i would like to retrieve, is there anyway of retrieving these files? Also has anyone else had this problem?

One major thing i forgot to mention was that itunes didn't recognise my ipod as a 5th gen and updated it for another ipod, thats why this topic was called incorrect update from itunes.

Incorrect reading from Thermcoupl​es

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Incorrect reading from Thermcouples