Reading data from an infocube into wd application

Hi,
How can we read data from an infocube.I have to read data from two infocubes and then display it in table in an wd application.
I have found an FM RSDRI_INFOPROV_READ to read , but how to use the same in wd application.

Hi Sanjeev,
Use CALL FUNCTION To use FM in WD.
something like this..
Declarations for BAPI_HU_DELETE_FROM_DEL
DATA : Del     TYPE BAPIDELICIOUSDELIVERY-DELIVERY_NUMBER,
         Return1 TYPE TABLE OF BAPIRET2.
del = lv_imp_outdel.
DATA : HUKEY    TYPE BAPIHUKEY-HU_EXID,
         wa_hukey TYPE BAPIHUKEY-HU_EXID.
loop at lt_pack_mat into ls_pack_mat.
wa_hukey = ls_pack_mat-HANDLING_UNIT.
MOVE wa_hukey TO hukey.
endloop.
Calling BAPI_HU_DELETE_FROM_DEL
CALL FUNCTION 'BAPI_HU_DELETE_FROM_DEL'
    EXPORTING
      DELIVERY = del
      HUKEY    = HUKEY
    TABLES
      RETURN   = Return1.
Commit Work
CALL FUNCTION 'BAPI_TRANSACTION_COMMIT' .
Chers,
Kris.

Similar Messages

Read data from an Infocube

Hi,
I'm writing a program to read data from an infocube, usfin FM RSDPL_CUBE_DATA_READ, but I can't get a result.
This are the parameters I'm using:
I_INFOCUBE                                = 'ZGE_CUB10'
I_REFERENCE_DATE                  = sy-datum
I_S_RFCMODE-ID                        = BIDCLNT100
I_S_RFCMODE-RFC_RECEIVER = RSDPL_CUBE_DATA_READ
I_S_RFCMODE-PACKAGESIZE    = 100
I_S_DELTAMODE-SYSID             = BID
I_S_DELTAMODE-DELTAMODE   =''
I_T_CHA-chanm    = 'ZGE_KPI'
I_T_CHA-chaalias = 'ZGE_KPI'
I_T_CHA-orderby    = 0
I_T_KYF-kyfnm   = 'ZGE_VALOR'
I_T_KYF-kyfalias = 'ZGE_VALOR'
I_T_KYF-aggr      = 'SUM'
i_t_range-chanm       = 'ZGE_KPI'.
i_t_range-sign           = 'I'.
i_t_range-compop     = 'EQ'.
i_t_range-low            = 'FTL_GLC10_0331'.
i_t_range-high          = 'FTL_GLC10_0331'.
E_T_COLUMN-colname   = 'salida_zge_valor'
E_T_COLUMN-iobjname = 'salida_zge_Valor'
E_T_COLUMN-keyflag    = 'X'
but I keep getting DELTAMODE_ERROR.
any help??? any sample-code you may share??
thanks
MAuricio

found some sample code...
http://www.web-dreamer.de/blog/2009/04/reading-on-sap-bi-infocubes-via-rsdri_infoprov_read.html.
SAP also gives you sample programs on how to use the same...
RSDRI_INFOPROV_READ_DEMO
from thread :
Re: RSDRI_INFOPROV_READ and compound selection conditions
Edited by: Arun Varadarajan on Jun 5, 2009 7:24 PM

To read data from exel file into sap

hi all,
How to read data from exel file into the internal table in abap?
Regards,
sugeet.

Hi Sugeet,
Use the following code.
DATA : BEGIN OF tbl_asset occurs 0,
         anlkl LIKE anla-anlkl,          " Asset Class
         bukrs LIKE anla-bukrs,          " Company Code
         ranl1 LIKE ra02s-ranl1,         " Asset #
         txt50 LIKE anla-txt50,          " Description 1
         txa50 LIKE anla-txa50,          " Description 2
         sernr LIKE anla-sernr,          " Serial #
         invnr LIKE anla-invnr,          " Inventory #
         menge LIKE anla-menge,          " Quantity
         meins LIKE anla-meins,          " Base UOM
         inken LIKE anla-inken,          " Inventory
END OF tbl_asset.
DATA : w_filename TYPE IBIPPARMS-path,
       w_file     TYPE string.
start-of-selection.
*popup for file path from user
CALL FUNCTION 'F4_FILENAME'
EXPORTING
   PROGRAM_NAME        = SYST-CPROG
   DYNPRO_NUMBER       = SYST-DYNNR
IMPORTING
   FILE_NAME           = w_filename          .
MOVE w_filename TO w_file .
* upload data
CALL FUNCTION 'GUI_UPLOAD'
EXPORTING
    FILENAME                      = w_file
    FILETYPE                      = 'ASC'
    HAS_FIELD_SEPARATOR           = 'X'
TABLES
    DATA_TAB                      = tbl_asset
EXCEPTIONS
   FILE_OPEN_ERROR               = 1
   FILE_READ_ERROR               = 2
   NO_BATCH                      = 3
   GUI_REFUSE_FILETRANSFER       = 4
   INVALID_TYPE                  = 5
   NO_AUTHORITY                  = 6
   UNKNOWN_ERROR                 = 7
   BAD_DATA_FORMAT               = 8
   HEADER_NOT_ALLOWED            = 9
   SEPARATOR_NOT_ALLOWED         = 10
   HEADER_TOO_LONG               = 11
   UNKNOWN_DP_ERROR              = 12
   ACCESS_DENIED                 = 13
   DP_OUT_OF_MEMORY              = 14
   DISK_FULL                     = 15
   DP_TIMEOUT                    = 16
   OTHERS                        = 17
IF SY-SUBRC <> 0.
* MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*         WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
for HAS_FIELD_SEPARATOR Use
'X': Fields are separated by tabs.
SPACE: Fields are not separated by tabs. In this case, the table must contain only one column or all columns must be contained in the file in their entire length.
Hope it helps...
Lokesh
Pls. reward appropriate points

Reading data from 2 infocubes in same start routine - RSDRI_INFOPROV_READ

Hi guys,
Is it possible to read data from 2 Infocubes via RSDRI_INFOPROV_READ FM in same start routine of Infosource.
Both infocube have different KF's.
my one Infocube reading is working fine but now need to another infocube in same strat routine.
Help will be appreciated and full points will be assigned.
Thanks in advance,
Harry

Hi,
1.It means I have to call FM twice
2. Can I use same internal table to store data of both infocubes
3. both cubes have got different KF
Can you please explain in detail?
Thanks,
Harry

Load data from an infocube into other infocube

Hi guys....i try to load data from an infocube to other infocube.....i generated the infosource for export without problems i can visulize the datasource in my BW System assigned well...but how i can run the extraction from one infocube into the other?
I view that in ODSs there's an option to run load of data into datatargets but in the infocube i can´t find this option......
is there anything else to do?
Regards

The Infosurce and Datasource was linked automatically i can see this in Source System Myself but i can´t see it in Infosources Tab and i can´t create a Infopackage....that´s my problem

Gurus..need help in reading data from virtual infocube

Gurus,
I have to read data from an virtual infocube...I am trying to use FM RSDRI_INFOPROV_READ to read data but it doesn't work..
I am doing exactly what has been done in the demo program RSDRi_INFOPROV_READ_DEMO...
Please help me...its really URGENT...
Thanks
sam

Check out this thread....
must be helpful
Re: Read data from 0BWTC_C02 via ABAP

Error reading data from an infocube

Hello,
I want to read data from a remote infocube in tcode listcube, and I get this 2 error messages: "Error reading the data of InfoProvider IC_SNP_DR" and "Error when generating program". This is a remote cube reading data from a SNP Planning Area.
I´ve already activated Plng Object Strucuture 9ASNPBAS and repair all infoobject but in tcode /SAPAPO/MSDP_ADMIN in 9ASNPBAS I get message "Not All InfoObjects Can Be Read". Is this why I get the error in reading the infocube?
Does anyone know why I get this errors and how to solve them?
Thanks and Regards,
Teresa Lopes

Teresa
From /SAPAPO/MSDP_ADMIN go to extras/data extraction tools. This gives you all the things you need to manage the extractors on the snp planning areas. you can use RSA3 to test the extractor and pull data to a list. Are you sure you want to extract using the total POS (9SNPBAS). Based on the data you need you might want to extract based on one of the standard SNP aggregates. MALO (material location) for example.
You mention that the POS was active. Make sure you Planning area is also initialized
George

Regarding reading data from a file in the application server.

Hello Everyone,
My question is:
The file in the application server consists of data with header, detail and trail out of which the detail contains the main information. The detail again contains the data in the form of a continuous string and again some spaces corresponding to a single record. I need to split the data in the internal table in such a way so that the first few characters get into field-1 of the target internal table. Again I need to consider the spaces for accessing the data for filling up in field-2. How do I decide on the 'Split' statement and specially when the whole string has to be taken care of as contatining data in a single string format without space and again some data after some spaces corresponding to a single record.
Your help is very much needed. Thanks to all the experts in advance.

Hi
This is the sample code I was used for the similar requirement.
DATA: single_line TYPE string .
v_file_listings = pa_filn1.
IF v_file_listings IS INITIAL .
MESSAGE e039 WITH v_file_listings.
ENDIF.
*-- read file, split lines into fields and put data into table
OPEN DATASET v_file_listings FOR INPUT IN TEXT MODE ENCODING NON-UNICODE. "Opening the files
IF sy-subrc EQ 0.
DO.
READ DATASET v_file_listings INTO single_line. "Reading the content of file into line
IF sy-subrc = 0.
IF sy-index > 1. "skip header-line
SPLIT "Split the content of line into work area
single_line
AT k_split
INTO
wa_listings-kschl " Condition type
wa_listings-tabname16 " Condition table name
wa_listings-vkorg " Sales organisation
wa_listings-kunnr " sold-to party numberor ship-to party number
wa_listings-matnr " Material Number
wa_listings-kodatab " Valid-from date
wa_listings-kodatb1. " Valid-to date
APPEND wa_listings TO itab_listings. "Appending Work Area to internal table
ENDIF.
ELSE.
EXIT.
ENDIF.
v_count1 = sy-tabix.
ENDDO.
Regards,
Sreeram

Error reading data from CLOB column into VARCHAR2 variable

Hi all,
Am hitting an issue retrieving data > 8K (minus 1) stored in a CLOB column into a VARCHAR2 variable in PL/SQL...
The "problem to be solved" here is storing DDL, in this case a "CREATE VIEW" statement, that is longer than 8K for later retrieval (and execution) using dynamic SQL. Given that the EXECUTE IMMEDIATE statement can take a VARCHAR2 variable (up to 32K(-1)), this should suffice for our needs, however, it seems that somewhere in the process of converting this VARCHAR2 text to a CLOB for storage, and then retrieving the CLOB and attempting to put it back into a VARCHAR2 variable, it is throwing a standard ORA-06502 exception ("PL/SQL: numeric or value error"). Consider the following code:
set serveroutput on
drop table test1;
create table test1(col1 CLOB);
declare
cursor c1 is select col1 from test1;
myvar VARCHAR2(32000);
begin
myvar := '';
for i in 1..8192 loop
myvar := myvar || 'a';
end loop;
INSERT INTO test1 (col1) VALUES (myvar);
for arec in c1 loop
begin
myvar := arec.col1;
dbms_output.put_line('Read data of length ' || length(myvar));
exception when others then
dbms_output.put_line('Error reading data: ' || sqlerrm);
end;
end loop;
end;
If you change the loop upper bound to 8191, all works fine. I'm guessing this might have something to do with the database character set -- we've recently converted our databases over to UTF-8, for Internationalizion support, and that seems to have changed underlying assumptions regarding character processing...?
As far as the dynamic SQL issue goes, we can probably use the DBMS_SQL interface instead, with it's EXECUTE procedure that takes a PL/SQL array of varchar2(32K) - the only issue there is reading the data from the CLOB column, and then breaking that data into an array but that doesn't seem insurmountable. But this same basic issue (when a 9K text block, let's say, turns into a >32K block after being CLOBberred) seems to comes up in other text-processing situations also, so any ideas for how to resolve would be much appreciated.
Thanks for any tips/hints/ideas...
Jim

For those curious about this, here's the word from Oracle support (courtesy of Metalinks):
RESEARCH
========
Test the issue for different DB version and different characterset.
--Testing the following PL/SQL blocks by using direct assignment method(myvar := arec.col1;) on
different database version and different characterset.
SQL>create table test1(col1 CLOB);
--Inserting four CLOB data into test1.
declare
myvar VARCHAR2(32767);
begin
myvar := RPAD('a',4000);
INSERT INTO test1 (col1) VALUES (myvar);
myvar := RPAD('a',8191);
INSERT INTO test1 (col1) VALUES (myvar);
myvar := RPAD('b',8192);
INSERT INTO test1 (col1) VALUES (myvar);
myvar := RPAD('c',32767);
INSERT INTO test1 (col1) VALUES (myvar);
commit;
end;
--Testing the direct assignment method.
declare
cursor c1 is select col1, length(col1) len1 from test1;
myvar VARCHAR2(32767);
begin
for arec in c1 loop
myvar := arec.col1;
--DBMS_LOB.READ(arec.col1, arec.len1, 1, myvar);
dbms_output.put_line('Read data of length: ' || length(myvar));
end loop;
end;
The following are the summary of the test results:
===================================
1. If the database characterset is WE8ISO8859P1, then the above direct assignment
method(myvar := arec.col1;) works for database version 9i/10g/11g without any
errors.
2. If the database characterset is UTF8 or AL32UTF8, then the above direct assignment method(myvar := arec.col1;) will generate the "ORA-06502:
PL/SQL: numeric or value error" when the length of the CLOB data is greater
than 8191(=8K-1). The same error can be reproduced across all database versions
9i/10g/11g.
3. Using DBMS_LOB.READ(arec.col1, arec.len1, 1, myvar) method to read CLOB data into a VARCHAR2 variable works for both WE8ISO8859P1 and UTF8
characterset and for all database versions.
So - it seems as I'd surmised, UTF8 changes the way VARCHAR2 and CLOB data is handled. Not too surprising, I suppose - may you all be lucky enough to be able to stay away from this sort of issue. But - the DBMS_LOB.READ workaround is certainly sufficient for the text processing situations we find ourselves in currently.
Cheers,
Jim C.

Reading data from infocube

Hi all,
We have an infocube which contains some figures like number of days, number of hours etc. We should calculate some indicators on them, something like:
Ind = Hours1 * 100 / Hours1 + Hours2
where Hours1 and Hours2 are figures which come from two different records, with codes 1 and 2.
We are not using BEx, but some other reporting tool which takes quite a long time over it. So we were asked to write an ABAP program which should read the data out of the InfoCube and calculate these indicators on basis of such fomulas. Writing a Transfer Rule with the InfoCube as DataSource proved not to be such a good idea because data is split in packages for the upload, so a subroutine within the transfer rule might not be able to find the records with codes 1 and 2 within the same package and that gives errors.
The question is: does anyone know of programs/functions/classes which could do the job? so read data from the infocube and eventually update it back into the infocube after the calculations?
Thanks in advance,
Ioana

Hi Ioana,
maybe Analysis Process Designer (APD) can solve your problem. In an APD process you can read the data from any InfoProvider, calculate your key figures in an ABAP routine and write the result to an ODS. This ODS has to be transactional and can't be directly reported, but you can report the ODS data by defining an InfoSet on it; you can also write the ODS data to any cube via the data mart interface. The data package split shouldn't be a problem in the APD process because you can define a partitioning characteristic in the APD routine.
The APD is available in BW 3.x via transaction RSANWB.
Martin

Error reading data from Infocube using shell script.

Dear all ,
I am facing a problem while reading data from an infocube using a shell script.
The details are as follows.
One of the shell script reads the data from the infocube to extract files with the values.
The tables used for extraction by the shell script are :
from   SAPR3."/BIC/F&PAR_CUBE.COPA"     FCOPA,
       SAPR3."/BIC/D&PAR_CUBE.COPAU"    COPAU,
       SAPR3."/BIC/D&PAR_CUBE.COPAP"    COPAP,
       SAPR3."/BIC/D&PAR_CUBE.COPA1"    CCPROD,
       SAPR3."/BIC/D&PAR_CUBE.COPA2"    CCCUST,
       SAPR3."/BIC/D&PAR_CUBE.COPA3"    COPA3,
       SAPR3."/BIC/D&PAR_CUBE.COPA4"    COPA4,
       SAPR3."/BIC/D&PAR_CUBE.COPA5"    COPA5,
       SAPR3."/BIC/MCCPROD"      MCCPROD,
       SAPR3."/BIC/SCCPROD"      SCCPROD,
       SAPR3."/BIC/MCCCUSTOM"    MCCCUSTOM,
       SAPR3."/BIC/SCCCUSTOM"    SCCCUSTOM,
       SAPR3."/BIC/SORGUNIT"     SORGUNIT,
       SAPR3."/BIC/SUNIMOYEAR"   SUNIMOYEAR,
/*     SAPR3."/BI0/SFISCPER"     SFISCPER, */
       SAPR3."/BI0/SREQUID"      SREQUID,
       SAPR3."/BI0/SCURRENCY"    SCURRENCY,
       SAPR3."/BIC/SSCENARIO"    SSCENARIO,
       SAPR3."/BIC/SSOURCE"      SSOURCE
The problem is that the file generation by this script (after reading the data from teh infocube) is taking an unexpected time of 2 hours which needs to be maximum 10 mins only.
I used RSRV to get the info about these tables for the infocube:
Entry '00046174', SID = 37 in SID table is missing in master data table /BIC/MCUSLEVEL2
Entry '00081450', SID = 38 in SID table is missing in master data table /BIC/MCUSLEVEL2
and so on for SID = 39 and SID = 35 .
Checking of SID table /BIC/SCUSLEVEL2 produced errors
Checking of SID table /BIC/SCUSLEVEL3 produced errors
Can you please let me know if this can be a reason of delay in file generation (or reading of data from the infocube).
Also , Please let me know how to proceed with this issue.
Kindly let me know for more information, if required.
Thanks in advance for your help.
-Shalabh

Hi ,
In continuation with searching the solution to the problem , I could manage to note a difference in the partition of the Fact table of the infocube.
Using SE14 -> Storage Parameters, I could find the partition done for the fact table as :
PARTITION BY: RANGE
COLUMN_LIST: KEY_ABACOPA
and subsequently there are partitions with data in it.
I need to understand the details of these partitions .
Do they correspond to each requests in the infocube(which may not be possible as there are 13 requests in infocube and much more partitions).
Most importantly, since this partition is observed for this onfocube only and not for other infocubes, it is possible that it can be a reason for SLOW RETRIEVAL of data from this ionfocube( not sure since the partition is used to help in fast retreival of data from the infocubes).
Kindly help.
Thanks for your co-operation in advance.
-Shalabh

Error reading data from infocube using RSDRI_INFOPROV_READ

hi,
I am trying to write a Function module to read data from an Infocube.
This is a remote enabled Function module and is working fine if I make a few minor changes and customize it to read data from a case of a DSO.
However, for cube, code is showing no syntax errors, but on execution is not returning any data also.
I have tried defining E_T_data as E/F/V tables of the cube, but still not getting any output.
Probably this is related to structure of E_T_data only. . . .
Can anyone please guide me on this.
regards
Parikshit.

Hello,
E_T_DATA needs to defined as an internal table with all the fields you need as an O/P from the infocube you are trying to fetch data from. Just make sure, you keep the name of the fields same as Name of the infoobjects in the Cube. So just define e_t_data Standard internal table with all fields you want to fetch from Infocube (name of fields same as infoobject name).
Also fill in the g_th_sfc, g_th_sfk internal tables with the list of characteristics and Keyfigues you wanna o/p with chanm/kyfnm field populated with exact name of infoobject and chaalias/kyfalias same as defined in g_t_data (good to keep both same).
Thanks
Edited by: Sandesh Shetty on Jul 29, 2008 2:26 PM

How to take data from HTML Template into BSP Variable?

hi all,
            can we take the data from the input field of HTML Template and collect into BSP variable? i have the shown the HTML Template into BSP page by passing the url in <IFRAME> tag now i have to take the data form the into field of HTML Template and save it back to the BSP table onclicking the Save button of BSP Page. please help me out thanks in advance.
Thanks & Regards,
Amol

Hi Amol,
This is very simple....
In the onInputProcessing event of the page use the following code to read data from the InputField into an ABAP variable...
Then you can use it at will..!
Code is :
data : event       TYPE REF TO if_htmlb_data,
       but_event   TYPE REF TO cl_htmlb_event_button.
event = cl_htmlb_manager=>get_event( request ).
IF event->EVENT_NAME = 'button' and event->EVENT_TYPE = 'click'.
      but_event ?= event.
      CASE event->EVENT_ID.
        when 'your_button_id'.
          data : lw_inf type ref to cl_htmlb_inputfield.
             lw_inf ?= cl_htmlb_manager=>get_data(
                            request = runtime->server->request
                            name    = 'inputField'
                            id      = 'your_inputField_id' ).
          if lw_inf->value is not initial.
            lw_variable = lw_inf->value.
          endif.
     ENDCASE.
ENDIF.

Read data from xml files and populate internal table

Hi.
How to read data from xml files into internal tables?
Can u tell me the classes and methods to read xml data..
Can u explain it with a sample program...

<pre>DATA itab_accontextdir TYPE TABLE OF ACCONTEXTDIR.
DATA struct_accontextdir LIKE LINE OF itab_accontextdir.
DATA l_o_error TYPE REF TO cx_root.
DATA: filename type string ,
             xmldata type xstring .
DATA: mr      TYPE REF TO if_mr_api.
mr = cl_mime_repository_api=>get_api( ).
mr->get( EXPORTING i_url     = 'SAP/PUBLIC/BC/xml_files_accontext/xml_accontextdir.xml'
              IMPORTING e_content = xmldata ).
WRITE xmldata.
TRY.
CALL TRANSFORMATION id
      SOURCE XML xmldata
      RESULT shiva = itab_accontextdir.
CATCH cx_root INTO l_o_error.
ENDTRY.
LOOP AT itab_accontextdir INTO struct_accontextdir.
    WRITE: / struct_accontextdir-context_id,
           struct_accontextdir-context_name,
           struct_accontextdir-context_type.
    NEW-LINE.
    ENDLOOP.</pre>
<br/>
Description:
In the above code snippet I am storing the data in an xml file(you know xml is used to store and transport data ) called 'xml_accontextdir.xml' that is uploaded into the MIME repository at path 'SAP/PUBLIC/BC/xml_files_accontext/xml_accontextdir.xml'.
The below API is used to read a file in MIME repo and convert it into a string that is stored in ' xmldata'. (This is just a raw data that is got by appending the each line of xml file).
mr = cl_mime_repository_api=>get_api( ).
mr->get( EXPORTING i_url     = 'SAP/PUBLIC/BC/xml_files_accontext/xml_accontextdir.xml'
              IMPORTING e_content = xmldata ).
    Once the 'xmldata' string is available we use the tranformation to parse the xml string that we have got from the above API and convert it into the internal table.
<pre>TRY.
CALL TRANSFORMATION id
      SOURCE XML xmldata
      RESULT shiva = itab_accontextdir.
CATCH cx_root INTO l_o_error.
ENDTRY.</pre>
Here the trasnsformation 'id ' is used to conververt the source xml 'xmldata' to resulting internal table itab_accontextdir, that have same structure as our xml file 'xml_accontextdir.xml'. In the RESULT root of the xml file has to be specified. (In my the root is 'shiva').
Things to be taken care:
One of the major problem that occurs when reading the xml file is 'format not compatible with the internal table' that you are reading into internal table. Iin order to get rid of this issue use one more tranformation to convert the data from the internal table into the xml file.
<pre>TRY.
      CALL TRANSFORMATION id
        SOURCE shiv = t_internal_tab
        RESULT XML xml.
    CATCH cx_root INTO l_o_error.
ENDTRY.
WRITE xml.
NEW-LINE.</pre>
<br/>
This is the same transformation that we used above but the differnce is that the SOURCE and RESULT parameters are changed the source is now the internal table and result is *xml *string. Use xml browser that is available with the ABAP workbench to read the xml string displayed with proper indentation. In this way we get the format of xml file to be used that is compatable with the given internal table.
Thank you, Hope this will help you!!!
Edited by: Shiva Prasad L on Jun 15, 2009 7:30 AM
Edited by: Shiva Prasad L on Jun 15, 2009 11:56 AM
Edited by: Shiva Prasad L on Jun 15, 2009 12:06 PM

Problem in reading data from serial port continuously- application hangs after sometimes

I need to read data from two COM port and order of data appearance from COM port is not fixed.
I have used small timeout and reading data in while loop continously . If my application is steady for sometime it gets hangs and afterwards it doesnt receive any data again.
Then I need to restart my application again to make it work.
I am attaching VI. Let me know any issue.
Kudos are always welcome if you got solution to some extent.
I need my difficulties because they are necessary to enjoy my success.
--Ranjeet
Attachments:
Scanning.vi ‏39 KB

billko wrote:
Ranjeet_Singh wrote:
I need to read data from two COM port and order of data appearance from COM port is not fixed.
I have used small timeout and reading data in while loop continously . If my application is steady for sometime it gets hangs and afterwards it doesnt receive any data again.
Then I need to restart my application again to make it work.
I am attaching VI. Let me know any issue.
What do you mean, "not fixed?" If there is no termination character, no start/stop character(s) or even a consistent data length, then how can you really be sure when the data starts and stops?
I probably misunderstood you though. Assuming the last case is not ture - there is a certain length to the data - then you should use the bytes at port, like in the otherwise disastrous serial port read example. In this case, it's NOT disastrous. You have to make sure that you read all the data that came through. Right now you have no idea how much data you just read. Also, if this is streaming data, you might want to break it out into a producer/consumer design pattern.
Not fixed means order is not fixed, data from any com port can come anytime. lenght is fixed, one com port have 14 byte and other 8 byte fixed..
Reading data is not an issue for me as it works nice but I have a query that why my application hangs after sometime and stops reading data from COM PORT.
Kudos are always welcome if you got solution to some extent.
I need my difficulties because they are necessary to enjoy my success.
--Ranjeet

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