Problems with sending data to serial

Hi!
This may be a stupid question.
But i try to ask it, however...
I'm trying to communicate with a motor throu rs-232.
The manual says that the commands should have the following form: (an example)
SXWT <0H><0H><0H><32H> <88H><cr>
Where <0H><0H><0H><32H> is the data in a four byte long integer. <88H> is a checksum, that is easy to calculate.
My problem is how do I send the hex. data in a string(combined with the ascii-string in the beginning)?

Also have in mind how the motor want to receive the integer. Labview uses Big Endian. If the motor want the integer in Little Endian you must use byte swapping
Besides which, my opinion is that Express VIs Carthage must be destroyed deleted
(Sorry no Labview "brag list" so far)

Similar Messages

Java Server/Client Applicaton - problem with sending data back

Hello!
I'm trying to write a small server/client chat application in Java. It's server with availability to accept connections from many clients and it's app just for fun... However, I've come up against a huge problem: everything what clients send, arrives to server (I'm sure about that because it is displayed on the Server Application screen) and then server should send it back to all clients but it doesn't work. I have no faintest idea what causes this problem. Maybe you can help me?
Here is my server app code:
import java.net.*;
import java.util.*;
import java.io.*;
* @author Robin
public class Server {
    ServerSocket serw = null;
    Socket socket = null;
    String line = null;
    Vector<ClientThread> Watki = new Vector();
    ClientThread watek = null;
    public Server(int port) {
        try {
            serw = new ServerSocket(port);
            line = "";
            while(true) {
                System.out.println("Running. Waiting for client to connect...");
                socket = serw.accept();
                System.out.println("Connected with:\n" + socket.getInetAddress() + "\n");
                watek = new ClientThread(socket);
                Watki.addElement(watek);
                Watki.firstElement().Send("doszlo?");
        }catch (IOException e) {
            System.out.println("BLAD: " + e);
    public void sendToAll(String s) {
        for(int i = 0; i < Watki.size(); i++) {
            Watki.elementAt(i).Send(s);
    public class ClientThread extends Thread {
        Socket socket;
        DataInputStream in = null;
        DataOutputStream out = null;
        String line = null;
        public ClientThread(Socket s) {
            try {
                this.socket = s;
                in = new DataInputStream(s.getInputStream());
                out = new DataOutputStream(s.getOutputStream());
                start();
            }catch (IOException e) {
                System.out.println("BLAD: " + e);
        public void Send(String s) {
            try {
                out.writeUTF(s);
            }catch (IOException e) {
                System.out.println("BLAD: " + e);
        public void run() {
            try {
                line = "";
                while (true) {
                    line = in.readUTF();
                    System.out.println(line);
                    sendToAll(line);
            }catch (IOException e) {
                System.out.println("BLAD: " + e);
    public static void main(String[] args) {
        Server serwer = new Server(5000);
}And here is client app code:
import java.net.*;
import java.util.*;
import java.io.*;
* @author Robin
public class Client implements Runnable {
    Socket socket = null;
    BufferedReader keyIn = new BufferedReader(new InputStreamReader(System.in));
    DataInputStream in = null;
    DataOutputStream out = null;
    String line = null;
    public Client(String host, int port) {
        try {
            System.out.println("Connecting to " + host + ":" + port);
            socket = new Socket(host, port);
            System.out.println("Connected\nTALK:");
            out = new DataOutputStream(socket.getOutputStream());
            in = new DataInputStream(socket.getInputStream());
            line = "";
            while(!line.toLowerCase().equals(".bye")) {
                line = keyIn.readLine();
                Send(line);
        }catch (UnknownHostException e) {
            System.out.println("BLAD: " + e);
        }catch (IOException e) {
            System.out.println("BLAD: " + e);
    public void Send(String s) {
        try {
            out.writeUTF(s);
        }catch (IOException e) {
            System.out.println("BLAD: " + e);
    public void run() {
        String loaded = "";
        try {
            while(true) {
                loaded = in.readUTF();
                System.out.println(loaded);
        }catch (IOException e) {
            System.out.println("BLAD: " + e);
    public static void main(String[] args) {
        Client client = new Client("localhost", 5000);
}By the way, this app is mainly written in English language (text that appears on the screen) however in functions I used Polish language (for example: BLAD - it means ERROR in English). Sorry for that :)

Yeap, I will change those exceptions later, thanks for advice.
You asked what's going on with it: both applications start with no errors, but when I write something in client side it should be sent to the server and then forwarded to all connected clients but it stops somewhere. However, I added a one line to the server code
line = in.readUTF();
System.out.println(line);
sendToAll(line); and after it reads message from client (no matter which one) it shows that message on the server side screen, then it should send this message to all clients but it doesn't work in this moment. What's confusing: no errors occurs, so it's rather a mistake in my code, but where?
Edited by: Robin3D on Sep 30, 2009 9:07 AM

Problem while reading data from Serial Port

Hi All,
I am facing some problem while reading data from Serial Port.
As per the requirement I am writing the data on Serial Port and waiting for response of that data.
Notification for data availabilty is checked with method public void serialEvent(SerialPortEvent event) of javax.comm.SerialPortEventListener.
When we are writing data on the port one thread i.e. "main" thread is generated and when data availability event occures another thread "Win32SerialPort Notification thread" is generated. This creates problem for me as we can't control thread processing.
So can anybody pls explain me how to overcome this problem?
Regards,
Neha

My Problem is:-
I am simoultaneouly wrting data on port & reading data from port.
First I write data on port using outputStream.write() method. Now when target side sends me response back for the request on serial port DATA_AVAILABLE of SerialPortEventListner event occured,we are reading data from serial port.Now till the time we didn't get the response from target next command can't be written on the serial port. When we are writing data on port main thread is executed.Now my problem starts when DATA_AVAILABLE event occured.At this point another thread is created.Due to this my program writes data of next command without reading response of previous command.To solve this prob. I have used wait() & notify() methods as follows.But again due to this my pc hangs after execution of 2 commands. (PC hang in while loop in a code provided below.)
From SOPs I could figure it out that after 2 commands we are not able to write data on serial port so DATA_AVAILABLE event doesn't occure n pro. goes in wait state.
Can anybody help me to solve this issue.
Neha.
Code:
public void serialEvent(SerialPortEvent event)
          switch (event.getEventType())
               case SerialPortEvent.BI:
               case SerialPortEvent.OE:
               case SerialPortEvent.FE:
               case SerialPortEvent.PE:
               case SerialPortEvent.CD:
               case SerialPortEvent.CTS:
               case SerialPortEvent.DSR:
               case SerialPortEvent.RI:
               case SerialPortEvent.OUTPUT_BUFFER_EMPTY:
                             break;
               case SerialPortEvent.DATA_AVAILABLE:
                    try
                         dataThread = Thread.currentThread();
                         dataThread.setPriority(10);
                         dataAvailable = true;
                                                                                byte[] tempArray=new byte[availableBytes];
                                    inputStream.read(tempArray);
                                                                   catch (IOException io)
                         SOP(io, "Error in serialEvent callback call for event DATA_AVAILABLE");
public void writetoPort(byte[] data) throws IOException
                         outputStream.write(data);
                          while(finalTimeOut >= actualTime)
                        if( ! dataAvailable)
                                actualTime = System.currentTimeMillis();
                       else
          synchronized (mainThread)
               mainThread = Thread.currentThread();
               mainThread.wait();
public void sendDatatoUser(byte[] b) throws Exception, HWCCSystemFailure
          obj.returnData(b);
          synchronized(mainThread)
               mainThread.notify();

Problem with sending and receiving e-mail through exchange [GMail]

Hello I have problem with sending and receiving e-mail.
all is well set, username and password are correct, the server set m.google.com. verification of data is about like stepping into a post and want to check the post office gives me an error message: Can not Get Mail. The connection to the server has failed
I have this problem on my two iPhone

http://www.zdnet.com/google-drops-exchange-activesync-support-for-free-email-acc ounts-7000008836/

Problem with a data set: DIAdem crashes

Hi,
I've got a problem with a data set. When I want to zoom in DIAdem-View, DIAdem crashes with the following message (translated from German ;-):
error type: FLOAT INEXACT RESULT or FLOAT INVALID OPERATION or FLOAT STACK CHECK
error address: 00016CB8
module name: gfsview.DLL
I've got some similar data set not showing such problems. Further on I scanned the data a bit, but in the 59000 points I didn't see anything special. I did try to delete "NOVALUE"s as well, but after that there still exist "NOVALUE"s.
Does anyone have an idea what to look for?
Thanks,
Carsten

Carsten,
Could you please upload you Citadel database to the following FTP site:
ftp.ni.com/incoming
If you want to compress (ZIP) and/or put a password on the data, that's fine. Please send me a private email at [email protected] (with the file name and password if you put one on the file) once you have uploaded the file and I will check it out.
Otmar
Otmar D. Foehner
Business Development Manager
DIAdem and Test Data Management
National Instruments
Austin, TX - USA
"For an optimist the glass is half full, for a pessimist it's half empty, and for an engineer is twice bigger than necessary."

Problems with sending via url

Hi there, I've got a problem with sending via an URL. If I send and receive something I use a method called connect. This method works well, I construct a URL, connect and receive an ObjectStream.
But as I only want to set some values in another use case I do not want to receive anything,
But it doesn't work - my servlet does not receive any request.
Could anyone please help me to solve this?
Thank you.
Regards
Tarik
private synchronized static void connectOneWay(String data)
            throws IOException, ClassNotFoundException {
        try {
            URLConnection connection = null;
            URL testServlet = null;
            Class classLock = ServletConnector.class;
            while (locked)
                classLock.wait();
            locked = true;
            testServlet = new URL(servletURL + data);
            if (MMSCMSTree.debug)
                System.out.println("Servlet URL: " + testServlet);
            connection = testServlet.openConnection();
            connection.setDoInput(false);
            connection.connect();
            locked = false;
            classLock.notify();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

Hi
There was not a problem with this, the problem was on the server side, infinite loop ... :-)
Regards
Tarik

Problem with Send and Receive Emal In SAP System

Hi gurus!
I have a following quote:
Dear !
I have a problem with send and receive email in SAP system following :
I want to test send and receive email in local network at my company. I
had two server
Server 1 : I setup Exchange Mail Server 2007 with domain controller is
fes.com
Server 2 : I setup SAP ERP ECC 6.0
On Server 1 : I created 2 account ( u1Afes.com and u2Afes.com ) and then I tested send and receive email between u1 and u2 in local network through Microsoft Outlook 2007 -> OK
and then
On Server 2: I had configured send and receive email on SAP system
through tcode SBWP, SCOT and SOST as Note 455140 - "Configuration of
e-mail, fax, paging or SMS using SMTP"
for example :
I logged in SAP system with user Basis01 (with email u1Afes.com ) -> then,using tcode SBWP -> new message -> send to u2Afes.com with Internet Mail type and then status message with green light -> sending ok
and then I have used Microsoft Outlook 2007, I logged with account u2 ->check email -> Ok. I saw message which send from u1
Finally, My problem is how can receive mail in SAP system without using Microsoft Outlook
For example:
Login system SAP with Basis01 account (with u1Afes.com ) -> tcode SBWP ->New Message -> send to u2Afes.com
and then
Login system SAP with Basis02 account (with u2Afes.com ) -> tcode ??? ->
To receive email from Basis01 (with u1Afes.com )
Please help me now
Thanks
I replace "@" with "A" because of banning email of this forum.
This quote is about sending email in local network. And we can't receive any email from the outside email address. Addition if I wanna send email to internal email in Internet (we've just tried with email address in local network) What should I config in SAP and Exchange ?
By the way, Is SAP Server IP added to Relay Agent for sending or receiving mail ?
Regards
An NLP
Edited by: An NLP on Apr 6, 2010 7:03 PM

Hi,
This problem is a classic problem of mail routing via Exchange. Exchange like most mail servers use the domain part of the email address as a means to route mails. So I will make an assumption that your main company mail addrss is "User @ fes.com".
So when you send a mail to the "User @ fes.com mail" address the mail is delivered to your Outlook mail address as this is the default route for company.
(Q) So how do you get your Exchange server to relay the mail into the sending SAP system?
(A) The easiest way would be to setup and unique mail domain for your SAP system. I always recommend "user @ client.sid.company.com" which in your case would be "u1 @ 100.PRD.fes.com". You can then instruct Exchange to send any emails addressed to 100.PRD.fes.com domain to your SAP system. Also using this format of address you can configure multiple mail connections into multiple SAP systems.
(A) Another answer would be to enter the "Full" email address (LOcal and Domain part of address) into the routing rule for Exchange e.g. "U1 @ fes.com" so that all emails addressed to this user will be delivered into SAP. However this method requires a lot of Admin as you will have to update Exchange with ALL email address that need to receive emails. Also if your corporate mail address is "U1 @ fes.com" then all mails will be forwarded to SAP.
I would definitely NOT recommend this method but the decision is up to you.
P.S. The IP address of the SAP system is entered into the mail header of the email. This is standard practice in SMTP relay. You can suppress this header in Exchange
Hope this helps
Michael

Problem with Java Dates and UPDATE for SQL2000

I am having problems with the date formats for Java. I am trying to put the current date time into a SQL table, here it the code I am using:
var Today = new Date()
var conn = Server.CreateObject( "ADODB.Connection" )
conn.Open( "Provider=SQLOLEDB;Server=(local);Database=BillTracking;UID=sa;PWD=;")
var sql = "UPDATE BillAssignments SET DatePosted = " + Today + " WHERE AssignmentID = '" + Request.QueryString("AssignmentID") + "'"
var rs = conn.execute(sql)
I keep getting different errors and I have been unable to find a solution yet. I know that I need to change the date format from the Java standard to the one that SQL likes.
Help....
Norm...

Please tell us where the Java part of this comes in. I see that you are using JavaScript to load up data via an ADO connection (presumably on an IIS platform) - but I do not see where you are using Java
Lee

1 year ago i installed Elements 12 on my PC with a serial number. Today i have installed Elements 12 also on my laptop. But,...there is a problem with validation of the serial number on my laptop. Is there a need to validate Elements or will this progra

One year ago i installed Elements 12 on my PC with a serial number and it was OK.
Today i have installed Elements 12 also on my laptop.
But,...there is a problem with validation of the serial number on my laptop. Is there a need to validate Elements or will this program real disapeare in 7 days?
Hans

Hi,
Since you already have one copy activated the serial number must be logged in your account details - I would first check that the one logged and the one you are attempting to enter are the same.
You can check your account details by going to www.adobe.com and clicking on Manage Account. You need to sign in with your Adobe Id and then click on View All under Plans & Products. Next click on View your products and after a while it should produce your list.
If there is a problem with the serial number, only Adobe can help you there (we are just users). Please see the response in this thread
First of all, I would have to say that getting in touch with you is a nightmare and I am not at all happy that I can't just email or live chat with someone who can help! I am not a technical person, I just want to be able to use Photoshop Elements and ge
Brian

I recently upgraded to Firefox 13.0.1 and I'm operating a Mac Powerbook Pro with OS of 10.6.8 (Snow Leopard). Now I'm having intermittent problems with sending

I recently upgraded to Firefox 13.0.1 and I’m operating a Mac Powerbook Pro with OS of 10.6.8 (Snow Leopard).
Now I’m having intermittent problems with sending emails where Firefox freezes up. There is often a yellow warning above suggesting 32-bit mode, sometimes I can click to shift it that way, sometimes not.
Anyone having these problems?
Any suggestions?

I recently upgraded to Firefox 13.0.1 and I’m operating a Mac Powerbook Pro with OS of 10.6.8 (Snow Leopard).
Now I’m having intermittent problems with sending emails where Firefox freezes up. There is often a yellow warning above suggesting 32-bit mode, sometimes I can click to shift it that way, sometimes not.
Anyone having these problems?
Any suggestions?

Problem with billing date at closed period

Hi
We have a problem with billing date in transaction . Previously we could set up different (earlier) billing date than the actual posting period and now it is not working. We receive an error message that the posting period is closed ) .
I attached an example invoice which we managed to post and where you can see what Iu2019m thinking about, parking number: 1024337, BILLING DOCUMENT: 841835. In this case the billing date was at 30.11.2007, but the posting in 15.07.2008 and we managed to post.
Pls help that issue
yps

hi,
it is due to posting period closed for the month of 07/2008.
u need to open posting during that period.
Regards,
Greeshma

Mail and iPhoto Problems with sending photos.

Mail and iPhoto Problems with sending photos.
I have this problem that started a while ago and seems to be getting worse.
Here are the different scenarios.
-If I try to share a photo to email within iPhoto, it will insert the image file name in the mail message, but no image icon or opened image. In iPhoto Preferences under General I have chosen to use Email Photos using Mail.
-If I choose to use iPhoto to send the photo, it will compose the message and the photo is viewable. If I send the message i can view the photo within the email I sent to myself. Nothing happens when I double click on the photo in the Mail message. Nothing happens when i control click on the photo in the mail message. Nothing happens when I try to drag the photo to the desktop from the mail message. When I try to save attachments from the email and choose a place to save it, the save button is grayed out and it cannot be saved. When I check the mail message it says there is an attachemnt but there is no file size listed.
-If I use the stationary within Mail app I cannot drag a photo into the placeholder, I get a circle with a line through it symbol when I try. It happens if I try to drag a photo from the desktop or from the media browser within Mail app.
-If I drag the photo to the desktop from iPhoto, I can double click it on the desktop and it will open in Preview.
-If I then control click on the same photo on the desktop and scroll to share/email, the generic photo icon will be inserted in the mail message. If i double click the photo icon in the mail message I get a message it can't be opened because it is empty.
-If I drag that same image to the mail message body the same thing happens.
-If I send that email to someone they cannot open the image file.
What I can do:
- I can drag that same image file on the desktop to my dropbox folder and it will upload. From there I can go on my iPad and download the photo and send it through email just fine.
-I can open the same image file on my desktop in Preview, I can copy and paste it into a mail message and the image will be viewable in the mail message by me and by the recipient.
-I can drag that same image on the desktop to my safari browser window and it will be viewable in the page. i can then copy and paste that image into a mail message and it is viewable in the message. I can then send that email message to myself and i can control click on the image and get all my options. It also shows as an attachment with the size of the image file in the mail message.
I can send that message to someone and they can see the photo and open it fine.
-If I send that same email to me I can see the photo within the mail. If I then drag that photo to the desktop I cannot use it again to put in an email as the same problem happens again.
I have tried all scenarios in my user account, another users account and in a guest account. The same happens in all. I am guessing because of this it is not a corrupt preference file, unless all of the preference files are corrupt. The guest user account I added a new email account so it was brand new and still had the problem.
I am stumped, all and any help is appreciated.

Another problem that may be related….
I have Snapz Pro. I used to be able to save the snaps to my desktop or a folder. Now when I take a screenshot and try to save the file to my desktop or a folder on my desktop I get this message "Files cannot be created in the selected location. You do not have permission to write to the selected location. Please choose a different location." I have found that i can only save the file to the clipboard. I have repaired permissions many times and still I have this problem.

Facing problem with a date column in select query

Hi,
I am facing problem with a date column. Below is my query and its fainling with " invalid number format model" .
Query: SELECT *
FROM EMP
WHERE trunc(LAST_UPDATED) >= to_date(to_char(22-05-2009,'dd-mm-yyyy'),'dd-mm-yyyy')
LAST_UPDATED column is "DATE" data type.
Please help me Thanks

Radhakrishna Sarma wrote:
SeánMacGC wrote:
WHERE LAST_UPDATED >= to_date('22-05-2009','dd-mm-yyyy');
You do not need the TRUNC here in any case.
I don't think so. What if the user wants only data for 22nd May and the table has records with date later than 22nd also? In that case your query willl not work. In order for the Index to work, I think the query can be written like this I think Sean is right though. Use of TRUNC Function is quiet useless based on the condition given here, since the to_date Function used by OP will always point to midnight of the specified date, in this case 22-05-2009 00:00:00.
Regards,
Jo
Edit: I think Sean proved his point... ;)

Problem in sending data to parallel port

Hello,
I can open a parallel port (LPT1) using java comm api i,e javax.comm.
but problem in sending data to parallel port,
I choose the appropriate port(LPT1), it is in bi-directional mode according to BIOS configuration.
but according to the java program the mode is SSP.
when i write data to parallel port the volt-meter give a reading of high state for all data pin (pin1 to 9) i,e the parallel port doesnot change state. I am using windows XP.
What is the solution?

try it on Open Solaris 10 or Linux platform.
also just try using the new FileWriter("LPT1").write("Hello");
on windows platform
Pravin

Problem with loading data to Essbase

Hi All,
I have a problem with loading data into Essbase. I've prepared maxl script to load the data, calling rule file. The source table is located in RDBMS Oracle. The script works correctly, ie. generally loads data into Essbase.
But the problem lies in the fact, that after deletion of data from Essbase, when I'm trying to load it again from the source table I get the message: WARNING - 1003035 - No data values modified by load of this data file - although there is no data in Essbase... I've also tried to change the mode of loading data from 'overwrite' to 'add to existing values' (in rule file) but it does'nt help ... Any ideas what can I do?

Below few lines from EPM_ORACLE_INSTANCE/diagnostics/logs/essbase/dataload_ODL.err:
[2013-09-24T12:01:40.480-10:01] [ESSBASE0] [AGENT-1160] [NOTIFICATION] [16][] [ecid:1379989900303,0] [tid:1116830016] Received Validate Login Session request
[2013-09-24T12:01:40.482-10:01] [ESSBASE0] [AGENT-1001] [NOTIFICATION] [16][] [ecid:1379989900303,0] [tid:1114724672] Received client request: Get App and Database Status (from user [admin@Native Directory])
[2013-09-24T12:01:54.488-10:01] [ESSBASE0] [AGENT-1001] [NOTIFICATION] [16][] [ecid:1379989900303,0] [tid:1101564224] Received client request: MaxL: Execute (from user [admin@Native Directory])
[2013-09-24T12:01:54.492-10:01] [ESSBASE0] [AGENT-1001] [NOTIFICATION] [16][] [ecid:1379989900303,0] [tid:1115777344] Received client request: MaxL: Describe (from user [admin@Native Directory])
[2013-09-24T12:01:54.492-10:01] [ESSBASE0] [MLEXEC-2] [NOTIFICATION] [16][] [ecid:1379989900303,0] [tid:1115777344] Output columns described
[2013-09-24T12:01:54.494-10:01] [ESSBASE0] [AGENT-1001] [NOTIFICATION] [16][] [ecid:1379989900303,0] [tid:1102616896] Received client request: MaxL: Define (from user [admin@Native Directory])
[2013-09-24T12:01:54.494-10:01] [ESSBASE0] [AGENT-1001] [NOTIFICATION] [16][] [ecid:1379989900303,0] [tid:1102616896] Received client request: MaxL: Fetch (from user [admin@Native Directory])
[2013-09-24T12:01:54.494-10:01] [ESSBASE0] [MLEXEC-3] [NOTIFICATION] [16][] [ecid:1379989900303,0] [tid:1102616896] Record(s) fetched
[2013-09-24T12:01:54.496-10:01] [ESSBASE0] [AGENT-1001] [NOTIFICATION] [16][] [ecid:1379989900303,0] [tid:1116830016] Received client request: MaxL: Fetch (from user [admin@Native Directory])
[2013-09-24T12:01:54.498-10:01] [ESSBASE0] [AGENT-1160] [NOTIFICATION] [16][] [ecid:1379989900303,0] [tid:1114724672] Received Validate Login Session request
[2013-09-24T12:01:54.499-10:01] [ESSBASE0] [AGENT-1001] [NOTIFICATION] [16][] [ecid:1379989900303,0] [tid:1101564224] Received client request: Get Application State (from user [admin@Native Directory])

Problems with sending data to serial

Similar Messages

Maybe you are looking for