How to code this with serial communication?

Here's What I Want To Do.
There are two computers A and B. I send some variational data, 1.2,3.4 for example, from A to B once per second. If B has received the right data, he will send "Yes" to A, otherwise he will say "No". If received "Yes", A will get ready for the next data-sending. If "No", A will send the data again.
The examples with LabVIEW for VISA communication are all like that one computer is listening and the other one is writing all the time. So can you help me with two simple VIs for computer A and B?
Regards.

You need to connect the two computers' serial ports with a Null Modem Cable (Tx/Rx, CTS/RTS, DTR/DCD reversed). The put the attached vi on computer A. It will send a command from an array, and wait for a response from computer B. If the response is Yes, then the next command will be sent. If not Yes then A will send the same command again and wait for a response. There is an Abort button if you want to abort, but it will only abort the current command. You can modify it to abort the whole thing by using a while loop to replace the for loop, and using the abort button to exit the while loop. I'll leave the coding up to you. You will have to write a vi to reside on B. I'll describe it but you can code it, good practice. Computer B should start off initializing the com port, like in the attached vi. Then loop at Bytes at Port until some bytes come in, then read the bytes. Use a comparison (equal) to check if the data is good. Use a case structure to define what to send back to computer A (Yes or No). Then write it back using Visa Write. Loop around the entire thing except for the com port init. Close the Visa after the main loop.
- tbob
Inventor of the WORM Global
Attachments:
COM_AtoB.vi ‏50 KB

Similar Messages

VISA bug with serial communication on MAC !

Hello to you all again,
I have appreciated all feed back from you about a problem encountered with serial communication on the MAC (see earlier questions)
To situate the problem:
One can only read 63 bytes back from the serial port using VISA calls (without handshaking). With the old serial VIs you can read everything back. In addition the exact same VIs do not show this problem on windows platform.
I have now performed extensive tests with a loopback on the serial port and the problem still stand.
I attach two VIs to an answer to this question (for some obscure reason I can not attach them to the question?) which do the basic loopback, one uses VISA the other the old serial VIs. Please try them out o
n your computer (for Mac RS422 miniDIN you should connect pin 3 to 5 and 6 to 8 to do the loopback)(for windows RS232 DB9 connect pin 2 to 3) in loopback configuration (see also resource library).
Please post a message if the described problem also occurs on your MAC.
Thanks to all of you for your cooperation!!

here are the VIs a promised
Attachments:
serial_loopback_test.vi ‏65 KB
visa_loopback_test.vi ‏70 KB

I used to drag and drop newly loaded CD's from Recently Added to one of my iPod Classic playlists. I have no idea how to do this with the new version of iTunes. I thought perhaps checking Sync might give me a clue but it warned me Syncing would wipe conte

I used to drag and drop music loaded from CD's from the Recently Added folder to a Playlist on my iPods Classic. Can't see how to do this with new iTunes version. Probably need to sync somehow but when I checked on Sync it warned me it would wipe out my iPod contents. Don 't know why Apple makes something that used to be simple so difficult. Can't even figure out how to display both my library and iPod contents on same screen.

Hey joshuafromisr,
If you resintall iTunes, it should fix the issue. The following document will go over how to remove iTunes fully and then reinstall. Depending on what version of Windows you're running you'll either follow the directions here:
Removing and Reinstalling iTunes, QuickTime, and other software components for Windows XP
http://support.apple.com/kb/HT1925
or here:
Removing and reinstalling iTunes, QuickTime, and other software components for Windows Vista or Windows 7
http://support.apple.com/kb/HT1923
Best,
David

How to do this with message mapping in PI ?

Hi All,
Field 1 = 100 characters having values in first fifty characters and last 50 characters blank . I need to remove all the first 50 characters with blank and pass 100 blank characters .How to do this with message mapping
Thanks

Adding to that, since usually a tab = 8 spaces. What you can do is to open notepad, press tab 4 times. Copy it and paste 3 times, afterwards press space 4 more times and you get 100 spaces.
Regards,
Mark

HT201303 last time i bought apps by using visa gift card so iam trying to use the kind of visa gift card and the system is denying the method payment ....any idea how to solve this with my itune account ?

last time i bought apps by using visa gift card so iam trying to use the kind of visa gift card and the system is denying the method payment ....any idea how to solve this with my itune account ?

A few reasons I can think of, but instead of shooting in the dark, lets check with experts who can look at your account.
iTunes Store Support
http://www.apple.com/emea/support/itunes/contact.html

I reset my phone and it now receives calls that were meant for my husband. I know how to fix this with messaging and facetime, but can't seem to find how to make it stop with the calls. Please help.

I reset my phone and it now receives calls that were meant for my husband. I know how to fix this with messaging and facetime, but can't seem to find how to make it stop with the calls. Please help.

It may be due to Continuity
The following quote is from Connect your iPhone, iPad, and iPod touch using Continuity
Turn off iPhone cellular calls
To turn off iPhone Cellular Calls on a device, go to Settings > FaceTime and turn off iPhone Cellular Calls.

Aggregating table - how to solve this with ADF Faces

Hello.
I am trying to solve something that would typically be really simple. However, now i' using ADF faces which is new to me and i'm stuck.
I want to show a table of rows with aggregated numbers (department in example below) and then "open up" any row by clicking on it to display the numbers that make up the aggregate (the guys in the helpdesk department in the example below).
Something like this:
DEPARTMENT SALARIES
+Sales                  1.234.567
+Warehouse         3.425.553
-Helpdesk 655.000
Joe 155.000
Jill 300.001
Burt 199.999
+Personnel           546.225
+Management     9.646.383
And to make things more complicated, some of the aggregate rows in my real life example don't have any underlying rows. They just have the total. Can anyone give me hint about how to do this with an ADF Faces-control? I need to show management this can be solved quick and simple with ADF Faces, so i can convince them that it is the way we should be working in the future.
Edited by: GoodCoffee on Jun 2, 2009 4:15 AM. Trying to indent the three rows under "Helpdesk"

Hi,
if you use ADF BC as the business Service then you can create a transient attribute (one that does not ave a database column ) and compute the total. Using JDeveloper 11g, you can use a Groovy expression. The below example calculates the Overall Salary paid by an department. The transient attribute is defined on the Department Entity Object
XML View
<Attribute
    Name="SumSalary"
    ColumnName="SUMSALARY"
    SQLType="NUMERIC"
    Type="java.lang.Long"
    ColumnType="NUMBER"
    IsQueriable="false"
    IsPersistent="false">
    <TransientExpression><![CDATA[Employees1.sum("Salary")]]></TransientExpression>
</Attribute>The Employees1.sum("Salary") string is the Groovy expression that you need to add for the attribute. You select the created transient attribute in the EO editor and press the pencil icon. Then you select "Expression" as the value type and add the string.
See: http://www.oracle.com/technology/products/jdev/11/how-tos/groovy/introduction_to_groovy.pdf
Frank

How to send data using serial Communication

I want to make serial communication using RXTXcomm.jar file.I was written the code.From this I got the list of serial ports avilable on pc but then after when I was tring to send command to machine which is attached to port it didn't gave any reply.
Tell me that how to send command to port?

This is how I do it:// open port, get ownership
SerialPort serialPort= (SerialPort)portId.open(APPLICATIONNAME, timeout);
// no framing and no threshold
serialPort.disableReceiveFraming();
serialPort.disableReceiveThreshold();
// communication speed, parity, stopbits and databits
serialPort.setSerialPortParams(BAUDRATE, SerialPort.DATABITS_8,
SerialPort.STOPBITS_1, SerialPort.PARITY_NONE);
// no handshaking or other flow control
serialPort.setFlowControlMode(SerialPort.FLOWCONTROL_NONE);
// timer on any read of the serial port
serialPort.enableReceiveTimeout(TIMEOUT);
// open streams for reading and writing
InputStream is= serialPort.getInputStream();
OutputStream os= serialPort.getOutputStream();... then you use the 'os' stream for writing and the 'is' stream for reading.
kind regards,
Jos

Problems with Serial Communication using Labview 6 and Solaris 8

I am working on a Driver for a Temperature Controller. But I am stuck at the very basics. I am using Labview 6 and the platform is Solaris 8 on a SUN Ultra 60 Workstation. I can not get the Serial communication to work. When I am running raw (uncompiled) code it works (I can read from and write to ttya and ttyb) but once compiled I get error code 37 (device not found). I have tried the following steps to fix this with no luck.
1) I made sure that the "serpdrv" file is in the same folder with the executable. I also make sure the serpdrv file is added as a support file when building the app.
2) I changed from using traditional serial VI's to labview 6's new visa functions. With these "new" VI's when
I try to initiliaze the visa device and wire a control to the "visa reference" input only 1 serial port shows up (ASRL2, missing ASRL1). I am not sure if this is part of same problem or whole new issue.
3) I reinstalled both visa and labview 6.0.2 update hoping this would help with no luck
4) I placed the following entry into the ".labviewrc" file
labview.serialdevices: "/dev/ttya:/dev/ttyb"
If anybody has had the same problem I would love to hear about it and if you have any solutions
Jamie Shea

Hi Jamie,
1. Do you have NI-VISA driver installed on the machine on which you are running this executable?? If you are trying to run the executable on the same machine on which the development program has ran fine, then you can ignore this point.
2. If you have done all the changes that are suggested by other discussions related to this topic, then try changing the Port input to Visa Serial Configure.Vi from a control to a constant and try it. In some case, I have seen this to do the trick. I think this point should solve your problem. If it does do tell me. :-))

How to code this?

Hi All,
Our application development will need to come up with a solution to update table B and tables C whenever a value in table A is changed to a certain value. Since I am new to Oracle stored procedures, I would like get some help on this. Can someone advice as to how to code the following? I greatly appreciate your ideas. Thanks!
Scenario:
Whenever the value on the column DCMTN_RCPT_STUS_CD is changed to "C" for table supplier_documentation (Table A), the value on the column BID_STUS_CD for table dmepos_bid will need to be updated to "01" (Table B), at the same time the column on BID_STUS_CD for supplier_application (Table C) will also
need to be updated to "01".
Table A:
SQL> select SUPLR_ID, BIDDER_NUM, NSC_NUM, DCMTN_RCPT_STUS_CD from
supplier_documentation where DCMTN_RCPT_STUS_CD='C';
BIDDER_NUM DCMTN_RCPT_STUS_CD
1000000 C
1000003 C
Table B:
SQL>select BIDDER_NUM, BID_STUS_CD from dmepos_bid order by bidder_num;
BIDDER_NUM BID_STUS_C
1000000
1000003
Table C:
SQL> select BIDDER_NUM, APLCTN_STUS_CD from supplier_application;
BIDDER_NUM APLCTN_STUS_CD
1000000
1000003

See Oracle row-level triggers:
http://download-uk.oracle.com/docs/cd/B10501_01/appdev.920/a96590/adg13trg.htm#376
SQL> create or replace trigger tr_01
2 after update of DCMTN_RCPT_STUS_CD on supplier_documentation
3 for each row
4 when (new.DCMTN_RCPT_STUS_CD = 'C')
5 begin
6   update dmepos_bid set BID_STUS_C = :new.DCMTN_RCPT_STUS_CD
7   where BIDDER_NUM = :new.BIDDER_NUM;
8   update supplier_application set BID_STUS_C = :new.DCMTN_RCPT_STUS_CD
9   where BIDDER_NUM = :new.BIDDER_NUM;
10 end;
11 /
Trigger created.
SQL> select * from supplier_documentation;
BIDDER_NUM DC
   1000000
   1000003
SQL> select * from dmepos_bid;
BIDDER_NUM BI
   1000000
   1000003
SQL> select * from supplier_application;
BIDDER_NUM BI
   1000000
   1000003
SQL> update supplier_documentation set DCMTN_RCPT_STUS_CD = 'B'
2 where BIDDER_NUM = 1000000;
1 row updated.
SQL> select * from supplier_documentation;
BIDDER_NUM DC
   1000000 B
   1000003
SQL> select * from dmepos_bid;
BIDDER_NUM BI
   1000000
   1000003
SQL> select * from supplier_application;
BIDDER_NUM BI
   1000000
   1000003
SQL> update supplier_documentation set DCMTN_RCPT_STUS_CD = 'C'
2 where BIDDER_NUM = 1000000;
1 row updated.
SQL> select * from supplier_documentation;
BIDDER_NUM DC
   1000000 C
   1000003
SQL> select * from dmepos_bid;
BIDDER_NUM BI
   1000000 C
   1000003
SQL> select * from supplier_application;
BIDDER_NUM BI
   1000000 C
   1000003Rgds.

How to code this - Please advise

Dear friends,
Please advise as how to code the below scenario in order to obtain the best performance.
I've an internal table IT_BSAD.Now I've to check if in the combination of bukrs,augbl,auggj,kostl,prctr,gsber,aufnr, if there is a single record in IT_BSAD, then it should be appended to IT_BSAD1 & if there are multiple records, then those should be appended to IT_BSAD2. In any case IT_BSAD1 & IT_BSAD2 should not contain duplicate records & records in IT_BSAD = records in IT_BSAD1 + Records in IT_BSAD2. I coded it somehow but it hangs in case of million of records. Please advise me the best way of doing it.
I'll appreciate any help in this regard.
Thanks:
Gaurav

prepare a sorted table with key bukrs,augbl,auggj,kostl,prctr,gsber,aufnr
loop it_basd assigning <fs_basd> .
at new sufnr.
lv_index = 0.
endat.
" move the fields to it_basd1 work area
"append it_basd1
lv_index = lv_index + 1.
if lv_index > 1.
if lv_index = 2.
read it_basd1 into iwa_basd2 with key bukrs,augbl,auggj,kostl,prctr,gsber,aufnr.
append iwa_bsad2 into it_bsad2.
delete from it_basd1 where bukrs,augbl,auggj,kostl,prctr,gsber,aufnr.
endif.
" move the fields of <fs_basd> to it_basd2 work area
append iwa_bsad2 into it_bsad2.
endif.
endloop.
hope this will help
Nafran

How to do this with Logic?

Hy!
Any ideas how i can realize this with Logic?:
http://www.youtube.com/watch?v=tE7GHgbmlP0
Are there any (freeware) loop plug ins or something else I could use?

Yea, but what if we want to make our own loops, instead of using what apple is providing?
If you're questioning whether you can make your own music loops in Logic as opposed to just using Apple Loops, then you're totally misunderstanding some of the most basic functioning of Logic. That's like asking whether you car will drive you around the block. Logic is a very complex multi track audio and midi sequencing program. Not only can you make any type of sound or audio or midi sequence and loop it to your heart's delight, you can make multi track sequences, songs, complex orchestral arrangements, movie scores, soundscapes .... shall I go on?
I just got LP8, and I'm just learning it too. Are you really saying that you can't do anything similar to that video with Logic?
Absolutely not!! In fact, SC's post 4th down tells you how to do something similar. Not EXACTY what's in the video, but SIMILAR.
Here's the difference: You can't record a single measure drum beat and then have it automatically loop indefinitely *in real time* while you layer more drum beats onto it, each one being recorded after a single measure and played back without stopping. In Logic, you can record a measure, then tell Logic to loop it, and then create another, loop that one, etc etc. The only difference is you're not doing it in 'real time' without stopping, you're building a sequence of looped sounds manually in the arrange. The OP seems to want to do it live, without the beat stopping. For that you need Ableton or another program with 'real time looping' capabilities. The only reason you'd want to do this would be if you A) want to impress your friends, or B) are trying to create beats in a live situation, like a club or something. If that's what you're after, other programs like Ableton Live are better suited for that.

How to Code this Query

Hello, I'm using Access and need to code this query on SQL and I have this problem:
I have 3 tables: Movie, Actor, Acts_In
Movie table has fields: Movie_ID, movie_name, actor_1, actor_2, director
Actor table has fields: Actor_ID, first_name, last_name
Acts_IN table has fields: Movie_ID, Actor_ID
* actor_id and movie_id are primary keys
I have to create a query that allows me to search for a director, giving me a list of actors that have worked with that director, and all the movies they have acted in.
so far I have come up with this code, however:
select actor.first_name, actor.last_name, movie_name
from (actor inner join acts_in ON acts_in.actor_ID=actor.actor_id) inner JOIN movie
ON acts_in.movie_ID=movie.movie_id
group by actor.first_name, actor.last_name, movie_name;
This code gives me a list of all actors and all movies they acted in, but it does not give me specific actors in respect to a specific director, adding
where director="XYZ"
does not work as it gives me all actors that have worked with director XYZ but not all movies they have acted in.
Thanks!

Grump. You should have provided us example data and DML, like this:
DECLARE @movies TABLE (movie_ID INT, movie_Name VARCHAR(50), director VARCHAR(75))
DECLARE @actors TABLE (actor_ID INT, first_name VARCHAR(50), last_name VARCHAR(50))
DECLARE @acts_in TABLE (movie_ID INT, actor_ID INT)
INSERT INTO @movies (movie_ID, movie_Name, director) VALUES
(1, 'Batman Returns', 'Tim Burton'),
(2, 'Charlie and the Chocolate Factory', 'Tim Burton'),
(3, 'Sweeney Todd', 'Tim Burton'),
(4, 'Alice in Wonderland', 'Tim Burton'),
(5, 'Edward Scissor Hands', 'Tim Burton'),
(6, 'From Hell', 'Albert Huges')
INSERT INTO @actors (actor_ID, first_name, last_name) VALUES
(1, 'Danny', 'DeVito'),
(2, 'Freddie', 'Highmore'),
(3, 'Helena', 'Bonham-Carter'),
(4, 'Johnny', 'Depp'),
(5, 'Mia', 'Wasikowska'),
(6, 'Micheal', 'Keaton'),
(7, 'Winona', 'Ryder')
INSERT INTO @acts_in (movie_id, actor_ID) VALUES
(1, 1),(1, 6),
(2, 2),(2, 4),
(3, 3),(3, 4),
(4, 4),(4, 5),
(5, 4),(5, 7),
(6, 4)
Which would have allowed us to come up with this:
SELECT m2.director, a.first_name, a.last_name, m2.movie_Name
FROM ((((@movies m
INNER JOIN @acts_in ai
ON m.movie_ID = ai.movie_ID)
INNER JOIN @actors a
ON ai.actor_ID = a.actor_ID)
INNER JOIN @acts_in ai2
ON a.actor_ID = ai2.actor_ID)
INNER JOIN @movies m2
ON ai2.movie_ID = m2.movie_ID)
WHERE m.director = 'Tim Burton'
GROUP BY m2.director, a.first_name, a.last_name, m2.movie_Name
IIRC the primary difference between TSQL and the "Access SQL" is the freakin parens. So that *should* run in access, which you appear to be using.
Don't forget to mark helpful posts, and answers. It helps others to find relevant posts to the same question.

How to code this one?

Please try to code the following:
1. If payment end date (PA0014-ENDDA ) = '12.13.9999' (Delimited) AND 1st Payment date (PA0014-ZDATE) < Sept.01 of the current fiscal year.
2. ELSEIf payment end date (PA0014-ENDDA ) = '12.13.9999' (Delimited) AND 1st Payment date (PA0014-ZDATE) > Aug 31 of the current fiscal year.
3. ELSEIf payment end date (PA0014-ENDDA ) <> '12.13.9999' (Delimited) AND 1st Payment date (PA0014-ZDATE) > Aug31.
4. ELSEIf payment end date (PA0014-ENDDA ) <> '12.13.9999' (Delimited) AND 1st Payment date (PA0014-ZDATE) < Sept.01 of the current fiscal year.
5. ELSE.
   EXIT.
ENDIF.
NOTE: I have a problem on how you can determine if that particular date lies on that particular fiscal year or not. Please help me code this one.
II. This are conditions between of each code.
PAYMENT DATE is a variable should be used to store each successive payments.
For Scenario 1, set (PAYMENT DATE ) = 1st payment date occuring after Aug 31 (Fiscal YEar)
For Scenario 2, set (PAYMENT DATE ) = 1st payment date (SCREEN field: P0014-ZDATE)
For Scenario 3, set (PAYMENT DATE ) = 1st payment date (SCREEN field: P0014-ZDATE)
For Scenario 4, set (PAYMENT DATE ) = 1st payment date occuring after Aug 31 (Fiscal YEar)
IF the [Payment date] is <= to the infotype 0014 record end date (PA0014-ENDDA), do
If the [Payment date] is in between the start and end date of the current Fiscal year
     If the unit (PA0014-ZEINH) is Days,
           [Payment date] = [Payment date] + (# of days)
           Add recurring payment (PA0014-BETRG) to total compensation counter
           Endif
     If the unit (PA0014-ZEINH) is Weeks, then {
              [Payment date] = [Payment date] + (# of weeks)
           Add recurring payment (PA0014-BETRG) to total compensationcounter
     Endif
     If the unit (PA0014-ZEINH) is Months, then {
              [Payment date] = [Payment date] + (# of months)
            Add recurring payment (PA0014-BETRG) to total compensation counter
     Endif
     If the unit (PA0014-ZEINH) is Years, then {
               [Payment date] = [Payment date] + (# of years)
            Add recurring payment (PA0014-BETRG) to total compensation counter
     Endif
Endif
Endif
Repeat for next payment
Repeat for the next infotype 0014 record (if it exists)
I really need help! So guys whos expert in SAP. Thanx in Advance.

>
Dave Packard wrote:
> Good day, everyone!
> I would like to join the tables FMIFIIT and AUFK. The INNER JOIN will be done between FMIFIIT's MEASURE (Funded Program) field, which is char(24), and AUFK's AUFNR (Order Number) field, which is char(12).
>
> The problem I'm having is this: All of the values in AUFNR are preceeded by two zeros. For example, if I have a MEASURE value of '5200000017', the corresponding value in AUFNR is '005200000017'. Because I have my SQL statement coded to just match the two fields, I obviously get no records returned because, I assume, of those leading zeros.
> Dave
You can't do a join like this in SAP's open SQL. You could do it in real SQL ie EXEC.... ENDEXEC by using SUSBTR to strip off the leading zeros from AUFNR but this would not be a good idea because a) modifying a column in the WHERE clause will stop any index on that column being used and b) using real SQL rather than open SQL is really not something that should be encouraged for database portability reasons etc.
Forget about a database join and do it in two stages; get your AUFK data into an itab, strip off the leading zeros, and then use FAE to get the FMIFIIT data (or do it the other way round).
I do hope you've got an index on your FMIFIIT MEASURE field (we don't have one here); otherwise your SELECT could be slow if the table holds a lot of data.

Need help on how to code this SQL statement! (one key has leading zeros)

Good day, everyone!
First of all, I apologize if this isn't the best forum. I thought of putting it in the SAP Oracle database forum, but the messages there seemed to be geared outside of ABAP SELECTs and programming. Here's my question:
I would like to join the tables FMIFIIT and AUFK. The INNER JOIN will be done between FMIFIIT's MEASURE (Funded Program) field, which is char(24), and AUFK's AUFNR (Order Number) field, which is char(12).
The problem I'm having is this: All of the values in AUFNR are preceeded by two zeros. For example, if I have a MEASURE value of '5200000017', the corresponding value in AUFNR is '005200000017'. Because I have my SQL statement coded to just match the two fields, I obviously get no records returned because, I assume, of those leading zeros.
Unfortunately, I don't have a lot of experience coding SQL, so I'm not sure how to resolve this.
Please help! As always, I will award points to ALL helpful responses!
Thanks!!
Dave

>
Dave Packard wrote:
> Good day, everyone!
> I would like to join the tables FMIFIIT and AUFK. The INNER JOIN will be done between FMIFIIT's MEASURE (Funded Program) field, which is char(24), and AUFK's AUFNR (Order Number) field, which is char(12).
>
> The problem I'm having is this: All of the values in AUFNR are preceeded by two zeros. For example, if I have a MEASURE value of '5200000017', the corresponding value in AUFNR is '005200000017'. Because I have my SQL statement coded to just match the two fields, I obviously get no records returned because, I assume, of those leading zeros.
> Dave
You can't do a join like this in SAP's open SQL. You could do it in real SQL ie EXEC.... ENDEXEC by using SUSBTR to strip off the leading zeros from AUFNR but this would not be a good idea because a) modifying a column in the WHERE clause will stop any index on that column being used and b) using real SQL rather than open SQL is really not something that should be encouraged for database portability reasons etc.
Forget about a database join and do it in two stages; get your AUFK data into an itab, strip off the leading zeros, and then use FAE to get the FMIFIIT data (or do it the other way round).
I do hope you've got an index on your FMIFIIT MEASURE field (we don't have one here); otherwise your SELECT could be slow if the table holds a lot of data.

How to code this with serial communication?

Similar Messages

Maybe you are looking for