How to create a stop button to send commands via the serial port and finish labview vi?

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• Sending data through the serial port and the mscomm control is not the same as the original data

  Please find attached the mscomSerialWrite2.vi and the resulting image.

  Try it and find that when data "FFAE" 4040 EA41 D8FF is sent,

  the received data are "FFAE" 4040 EA41 3F

  I tried other data, the result is as follows:

  sending: 4164 8163 4341 03 receive: 41 64 81 63 43 41 03 leadK
  sending: A143 B245 6AAA BBCC receive: AA BB 00 A1 B2 45 6a 43 result: NG
  sending: AAAA AAAA AAAA AAAA AAAA AAAA receive: result AA AA AA AA AA AA AA AA AA AA AA AA K
  sending: A1A1 A1A1 A1A1 A1A1 A1A1 receive: result A1 A1 A1 A1 A1 A1 A1 A1 A1 A1K
  Send: FFAE 4040 EA41 D8FF receive: FF AE 40 40 41 EA 3F result: NG
  Send: FFAE 4040 EA41 D8FF AA23 AB33 A233 AAAA A404 ABCD A2CD A22D B22C receive: FF AE 40 40 41 EA 3F 3F 3F 3F AA AA AB CD A2 CD result 3F 3F 3F: NG
  Send: FFAE 40A 2 SDAC AETS receive: result FF AE 40 A2 CC DD EE 00: NG

  Please help me solve the problem.

  

  According to Microsoft, you want something with non-printable strings as an array of bytes, not a string.  I don't know that it will make a difference in this case, but may be worth a try.

• How to periodically send various types of data via the Serial Port?

  Hello! Everyone

  I have to send data to LabVIEW to my device on the Serial Port.

  I know how to send data on serial port in LABVIEW, I already have this part.

  Now the problem is that I have several types of data I need to question my embedded device, if I want to send the query periodically command.

  So lets say that my four Op Codes are the following, which will send four different types of query command to my device on the serial port.

  (To be honest only OP_LED and OP_SENSOR is used now)

  0, OP_SYNC

  1, OP_LED

  2, OP_SENSOR

  3, OP_FUTURE

  Structure of basic package is as follows:

  Header (0x2C), Checksum, length of the data (n bytes), Op_Code (1 byte), length (length of Code + data Op)

  For OP_LED, I need to send the package as follows:

  0x2c 0x02 0x01 0 x 00 0x2F (0x2F being the XOR checksum) (calculation of Checksum part is done and SUB Vi form)

  Length of the package this is 0x02

  0x01 is Op Code for OP_LED

  In the same way

  For OP_SENSORi need to send the package as follows:

  0x2c 0x03 0x02 0x00 0 x 00 0x2D (0x2D being the XOR checksum) (calculation of Checksum part is done and SUB Vi form)

  0x03 is length of packet here

  0x02 is Op Code for OP_SENSOR

  So, how can I do this periodically in labview, in such sort that period can be adjusted whenever necessary.

  Is there something in LabVIEW to do.

  I had done the reception and decoding part and working properly.

  http://forums.NI.com/T5/LabVIEW/store-data-coming-from-serial-port-in-buffer-and-then-take/m-p/32722...

  So I must implement read and write the part of same while loop?

  Do not insert in the table if you put data in an array at index 0.  Just use array to build.

  No need to have Visa to write don't be a part of wire to the wire of reference and error VISA go in the upper part.  These wires should go THROUGH the entry VISA.

  Don't your checksum requires all the bytes up through data?  Righ now, you only put the checksum on data bytes and forget the opcode and length bytes.

  Your sending is not the opcode for Opsync or Opfuture.  You just send the empty tables.  At the same time for the other two, you put the opcode in the data table.  All your original opcode in the table build thread.  Get the data out of these structures in case item which is supposed to represent the opcode.

  xpress_embedo wrote:

  Now it works but I have now two problems.

  (1) OP_SYNC and OP_FUTURE do not data, but still receive its data on serial port, can I do something here as I have nothing when the table is empty in the structure of the case.

  I do not understand this statement.  Perhaps my answer above will fix any issue you have here.

  (2) how can selection operation Code to be send is done using control façade but real application, this task should be automated to a certain frequency, like OP_LED package must go out to the serial port to 100msec and packet OP_SENSOR must go out to 1000msec, I do this.

  Now you agree a little more architecture.  I would encapsulate the code that is in the while loop as a Subvi.  Then with the hand of your program while loop, use two time Express VI, a game for 100 msec, the other for 1000 msec.  When an express VI is true, run the Subvi with a command set waiting for the answer.  When the other VI Express is true, have it run the Subvi with the other set of commands.

  The device responds with anything when you send these commands?  You only send data.  I see no VISA Read to be able to recover all the data.

• How to create a search button custom Muse that shares the page on Facebook?

  Hello

  I tried to find the answer in the forum and on Google but I don't have a chance. What I'm trying to do is to create a search button custom from scratch in Muse, and when he is selected to share the web page it sits.

  What I did, is to have a share of full-screen, but I can't do it in a pop-up window as in most of the sites with the photo that describes the site.

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• Cannot send command via the VISA test panel in MAX

  Hi all

  I have a small question by using the VISA test panel in MAX.  I try to send a simple command to a device and then retrieve the response data.  I am able to do this successfully through Labview, but for some reason I can't get a good answer in MAX.  The command I sent you is merely a letter (unit address) followed by an end of line character (\r\n in ascii).  In MAX, I simply adding \r\n on the string sent in the buffer (end send on written == FALSE).  All parameters of series are the same as what I have in LV (19.2, 8-n-1).  Someone at - it ideas?  It of a bit frustrating that I just want to make something simple and do not want to have to build a whole routine in LV to do this.

  Cheers, Matt

  Oops!  Dysfunction of the user.  I was so positive that I sent a term of constant line that I don't look my own code.  In this case, it's a new line!  Duh!  Thanks for trying to help with this arrow.  Sorry to waste your time.

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• How to connect Agilent 8163 b via the serial port

  I have a problem connecting to the serial port with Agilent 8163 b. The driver that I use is driver_vxipnp_816x_4_1_4.exe. The problem always message display "Visa resource not found. Check the HPIB-Bus address"when I use the components inside the"hp816x tree.vi ". However, I have no error if I use normal read and write VISA.

  Y does it can someone help me answer my question? Thanks in advance.

  Thanks for the reply.

  I face a problem that you use with GPIB-USB-HS due to the physical dimension, as shown. The width between the remote locking connector (FIR) and (w1) GPIB connector to the appliance is too small for the GPIB-USB-HS (w2) connect to this topic. If I unplug the connector RIL, tunable Laser will not be activated. So I have a few questions as follows.

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  The drop box

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• How to set the number of packages to be send per second on the serial port in labview

  Hello.

  I need to send data to the serial port such that each data packet must be sent at a rate of 4 packets per second? How can it be done?

  Thanks and greetings

  What defines a package?

  You just need to have a while loop with a timer waiting for 250 milliseconds surrounding your VISA writing the function.

• 2 ways to send 16-bit to the serial port. What is the good?

  I am trying to send data via a serial port... This data consists of a 16-bit format. The data are sent by a DSP. Searching in the internet I found two ways to send data. The first is that the first photo anda the second way is the second picture.  I read data ok, which in this case is a sine wave. But I 'don't know if it is correct or not.

  In the first case , the citation read buffer sende th 8-bit to decimate them VI that will be concatenated after to join numbers function...

  Is it fair or not?   Second question. I noticed when I put multiples of 8 in the number of bytes the graph is ok. But when the number is not a multiple is the graph 'missing pieces '.  Why?

  In the second case, I confess I didn't undertood it. I know that the CASTING of TYPE function transforms the string on a table swap bytes (DSP sends the MSB and LSB) I know what subset of string.  I read that the 4 in the offset is put there to avoid the reading of the data header. But I don't know why 2048 is here. The latter reads data too...

  With any who answer my questions would be a really really help

  Thank you guys.

  First case

  

  second case

  

  Both are probably correct for the data being sent.

  If you want to read a unique 16-bit value at a time, then obviously you would set the number of bytes to read to be 2. The following code shows two ways to convert the two bytes to a single value. The chain Unflatten to specify the boutien.

  

  You don't mention her, but how do you synchronize the data. With the dsp to send two separate bytes, not sure what byte you will read first. Do you send start/stop characters so that you know this vital information?

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  We are putting in place the time and work package, and we need to write a few rules of the time for this entry.
  
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  Pls advise me on this point, because I'm just not understand this bit.

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