Communication problem series with USB serial Hub

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• Communication problem series with 321 Lakeshore

  Hello

  First of all, I would like to apologize if this question has already been answered in the forums, but I could not find any solution for this situation.

  I have a temperature of Lakeshore 321 regulator connected to the serial port using RJ-11 cable and the interface connector series OF-9 configured as DTE. Since there is none OR certified pilot in the Web site of NOR, I tried to write my own based on 332 pilot. I have read the (current temperature) LS321 data for a while last week. But then I tried to read the data each time, it kept me gives error as shown in the attachment.

  Any contributions to this issue would be most appreciated!

  You would be better to use the VI series set up.  It will also activate the stop character and set it for you.

  

• What advantage is there in using the NI USB-232/4 on a standard USB Serial Hub?

  What advantage is there to use the NI USB-232/4 on a shift to USE of concentrator series?

  

  I have an application that requires LabVIEW control of 19 instruments that communicate via RS - 232.

  I have read the Datasheet for the NI USB-232/4, and I see no benefit of spending $528 for this unit (five times) on a standard USB to Serial hub for half the price.

  Can someone tell me if there is an advantage for the NI USB-232/4 or if they have had experince with one?

  Thanks in advance.

  Agile wrote:

  Thank you, NYC for the quick response.

  Why you prefer that your desktop with taken PCI card in charge of ports series? The space? COM stable #s?

  COM stable #s, harder to disconnect randomly, don't have to worry about the bus power, do not have to worry about Windows randomly powering buses as a feature, reliability, often less expensive energy saving...

• Communication problem series

  Hello

  I want to order an instrument via a Labview serial port, but I am unable to communicate properly with him.  It works perfectly when I use Hyper Terminal, but as soon as I use the ' basic series write and Read.vi ", I have a timeout problem.  'Write' does not give me an error, but the "read" never works.  Unfortunately, no or the controls seem to work.  That seems to be a communication problem.

  Here are the parameters of communication for this instrument:

  Baud rate: 115200

  Data bits: 8

  Stop bits: 1

  Parity: None

  Flow control: no

  Charaters termination: \r\n

  By MAX, the communication port is OK and I am able to open the test Panel.  Howerver, I'm not able to access information when I ask a query, or there is no action to simple commands.

  Thanks for your help

  StarFiber wrote:

  I used the example of LV2009: Advanced Serial write and Read.vi.  Just to make sure that I don't have a mistake in coding. I just did the current value as a default value, so you can see what I actually sent to the instrument.

  I guess that you do not actually send * IDN? given that it is not even a command that is supported by the instrument.

  The Canadian standard requires that you cancel orders in writing with BOTH a \r and \n. Using the 'end writing with stop character?' only the \n is sent as it is what is on the stop character. It is unclear how the device responds, or not at all, if she did not see the \r and \n. So disable this option, the "string to write" play to display in '-' codes mode (right click and select in the context menu) and enter the command, followed by \r\n. otherwise, you could leave this option on, but you must make sure that you add \r to your order in the text box "string to write.

• Timeout of read with USB-serial adapter

  Hello world

  Sorry to post this kind of question again, but I spent 2 days to navigate on this forum, the forum of The Mathworks, and several web pages, I still cannot find the thing that will solve my problem

  I'm trying to control an Agilent 34970 A (with 40 channels 34908 A module) to read values of temperature thermocouples. I use a laptop (win7/64) and an adapter USB-to-serial (MCT U232-P9, who uses the Philips P87C52X2BA, not the FTDI chipset in case it makes a difference) and I installed the driver for this card. The adapter is recognized by Windows and appears as COM4.

  I put the COM port settings in Windows as they are on the unit (9600 baud, parity: none, 8 data bits, flow control: Xon/Xoff; the stop bits are not specified on the device).

  And... TADAAA... it does not work!

  I tried to use NI MAX (version 5.5), LabView (2013/32-bit version) and MatLab (R2012b) to send the * IDN? command and read the response. The part 'writing' is fine (at least it does not generate an error, but I don't know if the command reaches the instrument), but there is no response from the unit. If I try to read the COM port, I get the 1073807339 error (time-out before the operation ended). I tried to see if there any bytes that will be read at the port, but there is no...

  In LabView, I put the Xon and Xoff characters to those specified in the manual of Agilent (0x11 for Xon and Xoff 0x13), but there are a few other settings that I am not so sure: "Activate termination Char" (should be on or off? Tried both - no change) and the tank itself ending (I left it to the default '\n').

  I know this isn't really a problem NOR / Labview, but given that so many people in this community seem to have experienced this problem, I would be very grateful if someone can help solve me this problem!

  Thanks in advance

  Mathieu

  Yes.

• Problems with USB 3.0

  Hello people!

  I'm here with a need for help to solve a problem that I recently got after reinstalling my windows 7.

  The problem is with USB 3.0 driver, which does not react to any device I plug on two of the ports, and they are not dead I checked that. I tried to re - install USB 3.0 drivers as well and downloaded from HP site for my model, the latest version has failed so I tried with the other older and did not work as well. Only my two USB 2.0 ports work.

  I don't know if there are any other versions or drivers that I could use, those for my model don't work for some reason, and this is the first time I did re-installation of windows for that.

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• Problem with USB configuration for communication series.

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  Richard

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• Problem by acknowledging an instrument in series with a USB adapter in NIMax

  Hi Forum,

  I have an instrument designed to be controlled via a signal with a RS232 cable series and I try to get NIMax to recognize and send test orders.  My laptop (running Windows 7 Enterprise) has no serial port so I use a USB adapter to connect.  When I could not initially the device appears, I searched online and find suggestions that I should install the NI-VISA driver.  I downloaded and installed, but it does not help - to open VISA test panels is greyed out and it indicates that the unit is 'away' even when it is plugged.  When I open the control panel interactive of VISA directly, the device appears as a question mark, and if I double click top, it says the following:

  Error opening resource:
  ASRL10::INSTR

  VISA: (Hex 0xBFFF0011) insufficient location information or the device or resource is not present in the system.

  Any thoughts on how I can get my PC to communicate with the device?  Thanks in advance for your help.

  Erica

  

  EricaK wrote:

  Thanks for the tip, I didn't know that I needed to install a driver for this.  Do you know if a general device like this driver will work.

  You need to install some drivers Windows are necessary for your USB-serial adapter (should have with the adapter).  Once Windows detects the serial port will be MAX.

• Problem with USB HUB using Windows 7 on Bootcamp

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  I suggest you to see link and check.

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  http://Windows.Microsoft.com/en-us/Windows7/tips-for-fixing-common-driver-problems

  I also suggest you to contact the apple support and check.

  http://www.Apple.com/support/

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  • Tried with two Xmodem Kermit servers running on the calculator, press 'Connect' on Conn4X.

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  If you have the following cable "null modem" (http://commerce.hpcalc.org/serialcable.php), you can transfer, all

  data, HP50G, to the PC and vice versa, throughout the connection Kit (Conn4x), without issue.

  Please, see this link, to education, to transfer data with the serial null modem and connectivity kit cable... http://sense.NET/~Egan/SKB/ or... http://www.hpmuseum.org/cgi-sys/CGIwrap/hpmuseum/archv017.cgi?read=125259

  Note: best if you transfer data, HP50G, PC and vice versa, through the microUSB.

• T420s + Mini Dock Plus Series 3 with USB 3.0 90W - USB 3.0 works as USB 2.0

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  Help, please! If this combination is not supported, please point to the corresponding link.

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  USB 3.0 port on the dock is not supported on the T420s, it is supported only on T430s and later versions.

  http://support.Lenovo.com/en_US/detail.page?LegacyDocID=ACCS-Guide

  It allows to find the document listed in the link.

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• Satellite A50 543: still some problems with USB 2.0

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  TOBO

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  Well, as far as I know this device was shipped with a USB 2.0 and it should support a rate of 480 Mbit/s and USB 1.1 data transmission support max 12 Mbps transfer rate.
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• Big problems with USB devices

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• Watlow F4D Serial Communication problem error Code-1073807339 VISA Read in Watlow F4.lvlib:Utility MODBUS RTU receive message

  Hello

  I am trying to contact a Watlow F4D controller on a room using RS232. I use a cable converter USB-series and NI Watlow F4D Serial Driver.

  The code of error-1073807339 occurs in:

  Read in F4.lvlib:Utility MODBUS RTU Watlow VISA receive message-> Watlow F4.lvlib:Utility Register.vi reading

  I don't know what caused the problem. I am able to see the cable converter USB-Serial OR max. Please see the pictures for more details

  Thank you

  Felix