Serial port communication vb

VB Communication. This programming guide assumes the user has a basic knowlege of Visual Basic programming. The teaching method used is to show a basic example of a VB6.

To communicate with the serial port using Visual Basic, the MsComm control must be utilized to allow serial data transfer via a serial port Com1-Com4. MSComm is a custom control shipped with VB5. Step one Select at top menu bar of Visuabasic thus as picture below 2. Copyright c thaiio. Contact webmaster : webmaster thaiio. Parallel Port. Serial Port. Serial Info. What device have you connected? Have you read the manual for this device? Sending bytes into the abyss can be abysmal.

Add a comment. Active Oldest Votes. Carl Smotricz Carl Smotricz Heinzi Heinzi k 52 52 gold badges silver badges bronze badges. You may try to use com0com fist with two hyperterminals. Douglas L Douglas L 4 4 bronze badges.

For most serial port coding, com0com or a nullmodem cable are pretty essential. You will need a device through which your application will send and receive data. Jason R. Coombs Jason R. Coombs In a real application though you'd use the receive event to read the serial port. Sign up or log in Sign up using Google.

Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Podcast Making Agile work for data science. For more information, see OpenSerialPort. The Try Finally block allows the application to close the serial port even if it generates an exception. All code that manipulates the serial port should appear within this block. Use the ReadLine method to read the next available line of text from the serial port.

Use an If statement to determine if the ReadLine method returns Nothing which means no more text is available. If it does return Nothing , exit the Do loop. Add an Else block to the If statement to handle the case if the string is actually read. The block appends the string from the serial port to the return string.

This code example is also available as an IntelliSense code snippet. In the code snippet picker, it is located in Connectivity and Networking. For more information, see Code Snippets.