How send data to serial port from forms 6i

How send data to serial port to activate hardware connect.
The hardware is a drawer for cash the point of sales.

Andres,
I do the exact thing you are looking for,
I spool out a text file using text_io
the file will either contain a double ^G or an epson escape sequence, depending on the drawer type connected.
I then copy this file to the port using a copy function id d2kwutil
Works perfectly, but god knows how I'll do it if we want to run the point of sale over the web :)
John

Similar Messages

Write data to serial port every two minutes

Hi,
I use VISA-Write to write data to serial port. I want to write a byte every two minutes. What should I do?
Thanks!

hengfo,
that question is not connected to LV nor to VISA. Its more a systematic question....
So let's view at this a bit more abstract:
You want to "toogle" between two different messages sent to your interface. So you have to know:
- What was the last state i sent?
- When do i have top send the new state?
Even more abstract:
- How can i switch between the states?
Since the states are known before your program is executed, you can insert them into an array. Next, you have to read out the appropriate index from the array which contains your new state. Send the state and go to the next state. Propably you want to change timing, but that's easy too.
See attached screenshot for a possible solution:
hope this helps,
NorbertMessage Edited by Norbert B on 09-11-2007 07:57 AM
CEO: What exactly is stopping us from doing this?
Expert: Geometry
Marketing Manager: Just ignore it.
Attachments:
StateSwitching.PNG ‏8 KB

Sending File Over Serial PORT

Hi,
I'm able to read/write data over serial port using Java Comm APIs in Linux.
Can anybody please tell me how to write/read a file over Serial port?
Is it similar to sending a file over network?
An early response is appreciated...

Same stream I/O as used over the port works from a file. Dead simple.
Also dead slow. If you want to do large amounts of data, use a RandomAccessFile and read a big chunk at a time into a byte array. Then send the byte array.

How can detect the serial port is active

I made a program. It can read datas via serial port. But the datas wont came all the time, so the other part of the program not need to run. I want to put before the "reading serial port" a detection about the serial port is get a data. So the reading is wont start before datas are not coming. Can anybody help me how can i solve this problem?

Hi Zoyo, if you use the VISA- VIs, the functionyou need is "VISA Bytes at serial port". It shows, how many Bytes are available in the input buffer. You can find it here:
greets, Dave
Message Edited by daveTW on 11-22-2006 02:01 PM
Greets, Dave
Attachments:
Bytes at serial port.png ‏20 KB

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

Info about read or write a serial port with forms 6.0.5

Anybody can give some info. on read or write a serial port using form (Developer 6.0.5).
Thanks
MM
null

One option you can try is to develop a DLL
function to read/write serial port,
and then write a ORA_FFI procedure to call the DLL function.
Peter Ng
Calgary, Canada
null

How to execute Pro*C file from form

Hi All !
I have one pro*c file(.pc & .exe) . How I can execute this file from form.
Regards,
Neeraj

I think you could use Ora_Ffi package too. Make sure that you use correct version of Pro/C.
I think you should use Pro/C version 8.0.x with Forms 6.0. I don't use Forms 6i, but I think it is the same for it too.

HOW CAN I EXECUTE DINAMIC SENTENCES FROM FORMS

HOW CAN I EXECUTE DYNAMIC SENTENCES FROM FORMS.
Ex.
I would like to execute this commands from table SENTENCES
COL1
set_item_property (item1, enabled , property_true )
set_item_property (item2, enabled , property_true )
set_item_property (item3, enabled , property_false )
Regards
Message was edited by:
jcruizcarrera
Message was edited by:
jcruizcarrera

... but you could imagine a sort of workaround...
PROCEDURE Set_Item
    PC$Item     In Varchar2
   ,PN$Property In Number
   ,PC$Value    In Varchar2
) IS
BEGIN
   Set_Item_Property( PC$Item, PN$Property, PC$Value ) ;
END;That you can call like this:
Set_Item( 'BL.BUTTON', LABEL, 'Hello' ) ;Francois

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

How do I monitor serial port activity without first sending a command?

In my application I am sending a command through the serial interface and I want to monitor the response. The response is not instant, in fact it is a timeout response indicating the requested action did not work. How do I monitor so I can parse what is coming in over the serial port without necessarily sending a command?

You can always place a loop where you monitor the number of bytes at the serial port.
After configuring your VISA serial port session, you can create a Property Node to get the number of bytes available at serial port.
You can then process this information, for instance:
1. Establish a timeout because you never get a response.
2. Do serial port read if there is data available.
You can exit the loop with a timeout condition or having processed the data.
-JLV-

Using usb to serial adaptor , how do I select this port from within labview

Hi
I am using a usb to rs232 adaptor , how can I select this port within labview as all I can see is the com 0, com 1, lpt ports .
Any help appreciated
Brett
Snr Mining Engineering Technician
Western Australian School of Mines
Curtin University of Technology,
Locked Bag 22, Kalgoorlie Western Australia 6430
Ph: 08 90886159 Fax: 08 9088 6151 Mobile: 0407441251
Web http://research.wasm.curtin.edu.au/

vicky wrote:
Hi Brett,
yeah its easier tohandle and i think cheaper also,i found it easier to install also,so better go in for the USB stuff.
cheers
vicky
While the many USB adapters seem to be easier to handle, we have had some bad experiences. Their stability is not always up to the task for industrial applications. This might not be an issue when you only use them to control your RS-232 lab equipment for manual experiments, but in our case we have fully automated lab systems running, where LabVIEW controls sometimes up to 8 serial devices and those applications are supposed to run day and night, if possible for many days in a row without interruption. With many of those noname USB-RS232 adapters we noticed various kind of problems. It could range from intermittent communication errors (which could be handled by additional code in our software to retry communication on such errors) to complete failure of the RS-232 port after some time, which could only got back online by unplugging and replugging the USB adapter.
For our purpose this was completely unacceptable and we ended up using ENET-RS232 devices instead which are working fine for months in a row.
Rolf Kalbermatter
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

How to send more than one parameter from FORM to REPORT?

Dear all,
i can send one parameter from FORM to REPORT. but when i send more than one parameter it gives error: frm 41214 unable to run report.
here is the code i think the error is in the following line of procedure:
SET_REPORT_OBJECT_PROPERTY(repid,REPORT_OTHER,'paramform=no p_date_from='||v_date_from||'p_date_to='||v_date_to);
where to place the parameters and is there any space is required?
Thanks
Muhammad Nadeem

Dear Saeed Iqbal,
thanks for you reply.
dear i am using Form 10g run_product is not supported in this version.
i am using RUN_REPORT_OBJECT.
PROCEDURE rep_gl_ledger IS
repid REPORT_OBJECT;
v_rep VARCHAR2(100);
rep_status VARCHAR2(50);
v_date_from date;
v_date_to date;
v_detail_id_from varchar2(100);
v_detail_id_to varchar2(100);
v_voucher_type varchar2(100);
--req_no char(17);
BEGIN
v_date_from :=      :ledger_para.p_date_from;
v_date_to :=      :ledger_para.p_date_to;
v_detail_id_from :=      :ledger_para.p_detail_id_from;
v_detail_id_to :=      :ledger_para.p_detail_id_to;
v_voucher_type :=      :ledger_para.p_voucher_type;
repid := find_report_object('gl_ledger');
--repid := find_report_object('REPORT80');
SET_REPORT_OBJECT_PROPERTY(repid,REPORT_EXECUTION_MODE,BATCH);
SET_REPORT_OBJECT_PROPERTY(repid,REPORT_COMM_MODE,SYNCHRONOUS);
SET_REPORT_OBJECT_PROPERTY(repid,REPORT_DESTYPE,CACHE);
SET_REPORT_OBJECT_PROPERTY(repid,REPORT_DESFORMAT,'pdf');
SET_REPORT_OBJECT_PROPERTY(repid,REPORT_SERVER,'rep_online_FRHome');
SET_REPORT_OBJECT_PROPERTY(repid,REPORT_OTHER,'paramform=no p_date_from='||v_date_from||'p_date_to='||v_date_to);
--SET_REPORT_OBJECT_PROPERTY(repid,REPORT_OTHER,'paramform=no');
v_rep := RUN_REPORT_OBJECT(repid);
rep_status := REPORT_OBJECT_STATUS(v_rep);
WHILE rep_status in ('RUNNING','OPENING_REPORT','ENQUEUED')
LOOP
rep_status := report_object_status(v_rep);
END LOOP;
IF rep_status = 'FINISHED' THEN
/* Display report in the browser */
WEB.SHOW_DOCUMENT('http://'||:GLOBAL.G_IP||'/reports/rwservlet/getjobid'||substr(v_rep,instr(v_rep,'_',-1)+1)||'?','_blank');
ELSE
     message('Error when running report');
END IF;
END;
Regards:
Muhammad Nadeem

Want to use dotNet with teststand, but unsure how to send commands through serial port

I have a loCom communication dll used to send and recieve commands through serial comunication for a particular product. I the past they have used a LabVIEW wrapper to send and recieve commands, using this particular dll. I would like to just use testStand for the DOTNET Dll. I can get the commands, know the inputs and outputs required, however I can not figure out how to send the commands to the serial port. Anyone have any exprience doing this in TesSTand?

hallawt,
With your .NET code module, you should be able to call it directly, most likely as a parameter in the .NET method.
What are the inputs for the method you're trying to use?
Also, could you clarify where you're starting to have problems in your project?
Regards,
Renée M
Applications Engineer
National Instruments

URGENT: Capturing data through serial port

Hi,
My problem is with the use of javax.comm API. I have an RFID tag reader connected to
the serial port. It is a handheld reader and reads tags when its trigger is pulled. The
data that is read is sent to the serial port. This is what I want to capture.
I tried to test the reading operation by running the SimpleRead sample. What I see is
that I pull the trigger once to read 1 tag, but that generates 3 DATA_AVAILABLE events.
The tag ID that is read is 16 bytes, preceded by a 3 byte AIM Identifier (that declares
the following data was read from an RFID tag, and not a barcode which has different
AIM Identifiers for the different symbologies - but I digress.) By inserting some println's,
I was able to see that the 19 bytes of data are read 8 bytes at a time. The first 8 bytes
are read on the first DATA_AVAILABLE event, the next 8 are read on the second event
and the last 3 bytes are read on the 3rd DATA_AVAILABLE event.
This is strange & not good for me. How can my application know that the data read in
these 3 separate DATA_AVAILABLE events is to be concatenated to form a single
tag ID? Why is the single trigger-pull & tag read operation broken up into chunks of
8 bytes? Is there some configuration setting that will give me the behavior I want?
(I cannot rely on the length of the tag ID being 16 bytes always, because the same
reader will also be reading barcodes where the data may have varying length)
Thanks for any help. This is really urgent.
- Ajoy

please use the [ code ]and [code ] tags for code.
I don't think you have a problem with the code, it's more like understanding how to make it work.
to make the read method return.You do not have a read() method.
The code is behaving as it should.
You need to use the SimpleRead class as a thread, add and remove the Serial port listener as needed.
You read all data available, then send it to a method to parse the buffer.
You can count how much data was read so you know how much to parse.
I never used receive threshhold.
Here is example (sample)of my serial port reader
//SerialIO
   public void serialEvent(SerialPortEvent event) {
        switch(event.getEventType()) {
              case SerialPortEvent.OUTPUT_BUFFER_EMPTY:
            break;
        case SerialPortEvent.DATA_AVAILABLE:
            this.dataManager.readData();
//DataManager
public void readData() {
     String str;
     int     bytes = 0;
     long endTime, now;
     try {
          while (this.owner.isComPortOpen
               && (SerialIO.inStream.available() > 0)) {
               bytes = SerilIO.inStream.read(this.buffer);
               if (bytes > 0) {
               if (bytes > this.buffer.length) {
                    System.out.println( ": Input buffer overflow!");
     **Here is where you parse your buffer
               sendDataToParser(bytes, buffer);
          } catch (IOException ex) {
               System.out.println( ": Cannot read input stream");
      * Stops the serialEvent listener
     protected void stopSerialEvent() {
          SerialIO.serialPort.removeEventListener();
          try {
               Thread.sleep(2000);
               flushInputStream();
          } catch (InterruptedException e1) {
               // TODO Auto-generated catch block
               e1.printStackTrace();
      * Starts the Serial event listener
     protected void startSerialEvent() {
          // TODO Auto-generated method stub
          try {
               SerialIO.serialPort.addEventListener(SerialIO);
          } catch (TooManyListenersException e) {
               // TODO Auto-generated catch block
               //System.out.println("startSerialEvent in dataManager");
               e.printStackTrace();

How do I process serial port strings as bits

In response to my commands, my instrument is sending bytes to my serial
port. In one instance, 2 bytes are received. I want to treat these 2 bytes
as a group of 16 bits.
The VISA and Compatibility Serial functions return these bytes from the
serial port to Labview clearly labelled a "string".
Everything I can find in the way of Labview functions and .vis don't want to
do bit twiddling, bit swapping, and bit dropping, with "string" data.
I thought "hex string to number" could be used here, but I can't find a way.
The 2 Bytes in question can be represented as hex, but the data are not the
ASCII codes for the hex representation of a binary number, they are the
binary number. This "hex string to number" seems to want ASCII c
odes.
You can feed a hex number typed into a "control" box wired into "hex string
to number" and you get a meaningful number. You can feed the 2 bytes from
the serial port into an "indicator" set to read in hex and you get a hex
number that is a correct representation. But that is Labview handing them
around to itself. I need to get my "hands" on them.
I can't feed those same bytes that show up as a correct hex representation
in an indicator into the "hex string to number" or anything else, so far,
and get a number that is useful for further processing.
I thought "variant to data", but I can't find enough reference material to
understand how to use it. A boolean array seems like a bit of a weird
approach, so I thought I'd ask before I looked into that.
I'm used to dealing directly with binary numbers on the processor stack, I
call them whatever I want, and turn them into anything I feel like.
I'm sure I'm staring the solution in the face, but I can't find any way to
persuade
Labview to treat this "string" data as 16 bits.
I've got the 16 bits, which is better than not having them, but I don't have
much hair left.

duh, well I finally discovered the "Unflatten from String" function. A guy
just feeds in the bytes he's collected from his serial port that Labview
thinks are a "string", and out come lovely little unsigned 16 bit numbers,
or whatever other type of number he wants to turn the bytes into. And there
are great little bit twiddlers available after that, like "swap bytes", and
you can mask out bits with the logic operators, why this is fun. There's
nothing like being a moron...... fly me to the moon...................
"David Lewis" wrote in message
news:[email protected]..
> The two bytes would come from a serial port read.vi in Labview, classed as
a
> string. For instance, D3 and 02. The output wou
ld swap the two bytes,
i.e.
> to 02 and D3, consider the two swapped bytes as 16 bits, drop the six most
> significant bits, and output the ten bits that are left as an integer
> classed by Labview as some kind of number, not a string.
>
> Your example StringToBits_Converter.vi I found on the ni.com site
> unfortunately gives an error message and refuses to open on my system
saying
> it comes from a newer version of Labview 6 than I am running. Mine says
> 6.0.1b3. Thank you very much anyway.
>
> "FightOnSCTrojan" wrote in message
> news:[email protected]..
> > In another words, you want to create a VI in which the input is 2
> > strings (i.e. AB) and the output is the converted array bits (e.g.
> > 1010101010101010)?
>
>

How send data to serial port from forms 6i

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