Send Command To Device Connected To COM1?
Feb 3, 2012
I want to send a simple command, such as "v20" followed by a carriage control character, to a heating/cooling block connected to a desktop computer running Windows XP. I am able to get the commands to work within a terminal emulator. I want to compile a simple program that will be executed by software used to control a liquid handling robot.I've looked at the how to send strings to serial ports in visual basic page and modified that code ever so slightly to send the data that I want. However, it does not work and my heating/cooling block is not changing temperatures.
Here's what I have written:
Sub SendSerialData(ByVal data As String)
data = "n65"
' Send strings to a serial port.
[code]....
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Jul 27, 2009
I use visual basic. net, I would like to communicate with a device via COM1. Sending a command in the HEX format for example 02 00 05 15 ... and take the device to respond in HEX format. these commands I found on the Internet.
Private Sub Button1_Click () Handles Button1.Click
MSComm1.CommPort = 1 'Use the COM1 serial port
MSComm1.Settings = "4800, N, 8.1"[code].....
I bol pioneer of this program looking at Google, but I was never clear. meetings drgač this would be doing, but the service not to a significant'd be best if someone had already written CODO. better, but also that we already sent someone made programs
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Nov 10, 2009
I have a Zebra TLP 2844 Printer connected by USB to my computer. I want to send EPL Commands from Visual Basic .Net to the printer through the USB Port wich the printer is connected to. USB is a Serial port but IT IS NOT COM PORT. So, I don't want the method of connecting the COM port with VB.Net. I want a USB method or any helpfull idea or code.
I searched the net for many days but no solution was found.
Briefly, I want to print to Zebra TLP 2844 from Vb.Net over USB port.
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May 27, 2010
I have a need to construct a command Byte to send to another device using bit wise operations.There seem to be plenty of article on how to do this for indiviual bits using an OR'd constant but how do I do this for values that span multiple bits? eg "Bits 4-1" set the repeat count".so how to I inject a repeat count value of say 7 into my command byte?
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Apr 20, 2011
I try to write a application to make the communicate noise meter with PC, and following are my code[code]...
Why it does not work at all, and a sentence kept pop out in immediate window. "A first chance exception of type 'System.ArgumentOutOfRangeException' occurred in System.Windows.Forms.dllyvonne
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Feb 2, 2010
I need to detect a usb device when it is connected to PC.I found next code that is working. But it works only with Mass Storage.
Imports System.Management
Public Class Form1
Private WithEvents m_MediaConnectWatcher As ManagementEventWatcher
Public USBDriveName As String
[code]....
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Sep 6, 2009
I am trying to figure out how to detect if a device is connected. The exact c# sample can be found here: [URL]
But when I tried to convert it to C# .... I wasted hours!
I googled a lot and changed the declaration of the API many times...
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Mar 27, 2009
I want to detect when a new usb-device (can be anything) is connected to the computer. I don't need to know what kind of device it is, I just want to know when it is plugged in.
I found this thread: [URL]
I know the solution is in here, but I'm overlooking it I'm afraid. What I want:
USB-device connected > Run function. USB-device disconnected > Run another function.
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Feb 3, 2012
How to have the computer to tell the usb connected device what to do.
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Dec 21, 2011
I need to be able to get the status of a USB device ( Connected/Disconnected ). The device is a tablet. The device IS NOT a storage device, and no other operations will be performed. I am using Visual Studio 2010 and coding in VB. Everything i have found was for storage device or was old code.
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Aug 10, 2010
I was just wondering if you could view the items on a connected Zune device (such as the Zune HD or any of the others. (4GB, etc.))Also, possibly listen to the songs / watch the videos on it with the Windows Media Player codec in the program, and view the pictures in a PictureBox? Is this possible at all? Can I at least view the items? Or is this strictly forbidden?
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Jul 14, 2011
I am currently having an issue finding information on how to develop a simple application that a user can run to find out which COM port ie. COM1, COM2, ect is assined to the Belkin USB to Serial Adapters we use in the company.
To anyones knowledge is this possible and how would I implement it in a Windows Form Application.
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Apr 1, 2011
Using the code below i will get all network interfaces wich are enabled and functional on the machine.
Private netIntrfc As NetworkInterface() = NetworkInterface.GetAllNetworkInterfaces()
For i As Integer = 0 To netIntrfc.Length - 1
If netIntrfc(i).OperationalStatus = OperationalStatus.Up Then
[code]....
But my problem is how to get the default one, the one(ethernet adapter) through wich user is connected to internet?I need to change some settings of default(through wich user is connected to internet) adapter. settings i change through registry so i could sample add same settings for each network interface but that could cause problems and makes no point then?
EDITED:for now i have done like code below, so if this can help someone other...
Dim u As UdpClient = New UdpClient(System.Net.Dns.GetHostName, 1)
Dim localAddr As IPAddress = CType(u.Client.LocalEndPoint, IPEndPoint).Address
Private netIntrfc As NetworkInterface() = NetworkInterface.GetAllNetworkInterfaces()
[code]....
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Jul 20, 2009
I posted the message below in the VB6 section of this forum with no success, but as I've now got access to VB2008 via work, I thought I'd try again here. Basically I'd like to be able in code navigate to a folder held on a mobile device like a mobile phone connected to a pc using MS Activesync? It shows up in the drive list within "My Computer" as a system folder, I've vb6 code to detect all the drives including network mapped drives but not the mobile device.Ultimately I'd like to do file copying when my program detects a mobile device has been connected.
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May 18, 2010
I'm not sure if this would be this right place to post this, or even if I should go about trying to do it through my program itself or through the computer's settings on the final EXE file, but anyways, here goes.
I have a synchronization program that syncs my flashdrive to my home computer and (hopefully) my flashdrive to my personal folder on the school computers. What I think would be easiest, though, would be if the program was located on the flashdrive, and would simply "autorun" when I plug it in, instead of having 2 separate instances of the sync program running at school and at home.
Would it be easier (or possible) to code for that from within the program, or with the EXE file's settings?
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Aug 13, 2010
I am writing a small app that is retrieving data from a device connected to a virtual com-port. I connect without problems to the device using the settings 9600-8-N-1.
I need to send the command <esc>MS , the device then sends back the data to a computer. I have tried this using Hyperterminal with success. I also did this with Excel and VBA. I used the MSComm32 Active X control:
MSComm1.Output = Chr$(27) + "M" + "S" + Chr$(13)
Msgbox(MSComm1.Input)
This made the data from the device pop up in a messagebox. I am writing a winforms app in vb.net, using VS2005. I have a form, on which I have a Placed a SerialPort control, named sp. My sample code is as follows:
Private Sub Form1_Load(ByVal
sender As System.Object,
ByVal e
[CODE]...
This returns the error message "Error: expecting a command". I have done som tests in HyperTerminal, and have concluded with:
-If I dont send <esc>, I get error "Expecting a command"
-If I send wrong command (ie MD instead of MS) i get error "Bad command"
Based on this, I suspect that I don't pass the escape character correctly to my device. So I wonder how to do this?
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Apr 30, 2010
First let me say that I am not sure whether or not this should go in this section or the API section, and if it needs to be moved I apologize. My issue is fairly straight forward, but for some reason I cannot get it to work.
I am trying to send a command to a command line and then submit the command. I have been trying without success to get this to work in v2008 Express and v2010 Express, Here is the code I am trying to us:
Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" ( _
ByVal lpClassName As String, _
ByVal lpWindowName As String _
[Code].....
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Mar 17, 2010
I am currently using psexec.exe from PsTools to send a command to a remote system to fire a command through a command prompt however I am finding that the shell I am doing does not seem to like the spaces in the path.
[Code]...
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Mar 15, 2012
I have this code where I get all the IP's connected to the network.[code]...
But my LAN game is sending to those IP's that are connected to the network. but not yet opened my game. what I want is how do I code that the tcplistener or tcpclient will tell the host that they are active.....so that If they are active...their IP's are the only one's who will receive.
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Mar 11, 2010
I am trying to send a command to the external command line (cmd.exe) from the Windows form application that I'm writing in VB.NET (using VS2008).
I can only access the external program thru the command line (its not my program) and I must do so from a form app.
I am trying to use the following code. I am able to call a cmd.exe window, but I can't pass the command line my command.
Using mp As New Process
With mp.StartInfo
.FileName = "cmd.exe"
[Code].....
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Aug 18, 2010
Could anybody give me code to connect with GSM mobile and send sms through it?
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Jul 14, 2011
How to send file on a computer connected to LAN?
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Nov 6, 2009
Is their a way to send the server client info(account) With out connecting to the server(Full back and forth communication).
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Jul 29, 2009
how to use at commands in vb.net and how to send image from computer connected to GSM modem to a mobile using vb.net
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Sep 20, 2010
In VB6, I use CHR$(&H00) to create a Null Character. In VB.Net VS2008 CHR(&H00) creats a Null. I'm trying to send a Hex(00) to a serial device, but the VB.Net function only sends a null, not a null character. How can I accomplish this with VB.Net?
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Sep 20, 2010
In VB6, I use CHR$(&H00) to create a Null Character. In VB.Net VS2008 CHR(&H00) creats a Null. I'm trying to send a Hex(00) to a serial device, but the VB.Net function only sends a null, not a null character. How can I accomplish this with VB.Net?
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Feb 8, 2007
I have a label printer (Argox 1000-x) and i want to print some datas on it. And this printer is connected to my computer via the COM1 port. I can open/write COM1. And when i send some data to printer through COM1, Label Printer's Ready Signal Led will be ON/OFF. But it does not print anything or any label..
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Jun 12, 2009
I am having a little trouble with the serialport object in VB2008. I have a program that will send a command to the slave device however the program will not read the data from the slave device. I know my computer is communicating with the slave device because in hypertem it has no problem. For example I send the word "AT" and I should get back a response of "OK",
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Sep 16, 2009
i was using a pocketpc phone and i want to have a program it with a database.i am not familiar w/ the database of vs 2k8 because it was using a dataset i i dnt know how to connect the database of that...
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Apr 19, 2011
I need to send commands from PC to device through USB cable, and the code is : "0"(48) and must end with Enter(13). so what should I type in for the code for Enter?
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