im using VB 2008 and been trying to use the RS232 at 5 baud and setting the baud to that rate seems to go ok but when put in pratice it seems way to quick and doesnt work. I put that down to its to slow baud rate and not supported. I only want to send 1 byte so tryed it manualy by this ........
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We have a weigh bridge connected to PC via serial port.A VB code fetches the data from serial port and puts it in clipboard,which can be used by other applications like SAP.
We have several different makes of weigh bridge at different locations, each with separate settings(baud rate,data bit,parity), hence we need to change the VB code each time a new make weigh bridge is installed.
can we write a generic VB code which can automatically detect all these settings and capture the weight?
What baud rates are supported by the serial port object in VB 2010?
View 1 Repliesis there a way to increase the rate a Process object in .NET throws the OutputDataReceived event? It creates a large buffer (I believe 1024 characters) that is dumped in bulk which makes the application not as fluid of a stream as I would of like it to be.
View 1 RepliesThe application I am working with ignores the ALT key and just sends the 1 Keys because they are being sent too fast. I need to know if there is a way to slow down the Rate at which it sends the keys to something like 50ms?
View 11 RepliesI have developed a microprocessor based devise. It can communicate with laptop through RS232 as a VB application. Now most of laptops have USB port only. So I want to use USB replacing RS232 port on laptop side but not change anything on the device side. Can I do this using a USB-RS232 converter? How to change the VB software?
View 1 Replieshow to calculate rate for 3 days in different rate like public holiday,weekend and normal for 1 room
View 2 RepliesHow can I speed up a process? I see I should use timegettime, gettickcount, and queryperformance counter, but I have no clue where to start.
I guess you can call it Frame Rate or Refresh Rate of a process?
i am trying to indicate if the tax is at single rate (18%) or the family rate of (15%)This is what i got so far i could do the rest but just cant do the Mstatus part.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim Name As String 'Name of employee
Dim hrWage As Double 'Hourly wage
Dim hrsWorked As Double'Hours worked this week
[code]....
Error Message: "This server version is not supported. Only servers up to Microsoft SQL 2005 are supported VB.NET" I am using VB.NET 2008 and attempting to connect to SQL Server 2008 with XP as the operating system. I have service pack 1 installed in Visual Studio but this error message presists. The articles I have read on this error said to install sp1 as a solution but I have done that and the error persists. FYI, the error does not occur when I am using code to connect to SQL Server but when I attempt to connect using one of the designer wizards this error occure.
View 3 RepliesI am trying to connect a PC with peripherals thru RS232.The PC program has to send and receive value in HEX to peripherals.However, the value sent out seems to arrive at peripherals in ASCII.Following is two of my trial codes:
Private Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim HexArray(8) As Byte
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My program connects via the rs232 port to a pump and it managed to start the communication and sending data. But the problem arises when i try to read the return signal from the pump to pc. This is the piece of code i've used:
Code: Dim returnbyte(0) As Byte Dim ByteIndex As Integer = 0
Do While ClassSerialPort.BytesToRead <> 0 ReDim Preserve returnbyte(ByteIndex) returnbyte(ByteIndex) = ClassSerialPort.ReadByte() ByteIndex = ByteIndex + 1 Loop
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I obtain the following results:
Code:... 6 12 0 0 0 92 ...
From the manual i understand which byte to read. For e.g 6 = ACK. The problem is how to interpret the 4 bytes together in a string for e.g 0 0 0 92 means 9.2ml ?Is there any way to read the decimal point?
I have downloaded the vb script and it works as it should, its a program where you have some buttons so that you could trigger the relays.But i need several small scripts, one for each relay on / off so that i can call them from a .bat file with argument.i have a .bat named relaycard and in thet i have created argument like
relay1on
relay1off
relay2on
relay2off
and so on.
The small program relay1on should just do the jobb and then close itself.Maybe its a little bit clearer now.On the link that i posted there is a manual and even links to the vb program,
I chose Visual Basic 8 as a computer interface to communicate through RS232 (serial) to my microcontroller, which in turn will do its own thing to transmit data it receives from the VB GUI through wireless
I have used VB before but it's been a long time. I looked at some of the settings and it looks like it has a SerialPort com component I can use. Will it suffice for this project?Might be a simple question, but just want some tips from experienced developers.
I have a Delphi program that communicates with a vb.net dll that I created. The vb.net dll communicates with a Fluke scope meter via an RS232 connection. I have created a program that communicates correctly via RS232, giving me the anticipated value. Though, when I package this up as a dll and access the dll from my Delphi program I always receive a value of "1", rather than the value I was expecting (most cases a value in and around 240).I know that my delphi program is definitely communicating correctly with the dll and that my dll is definitely communicating with the scope meter
Here is my vb.net code:
Public Interface IFlukeComm
Function GetReading(ByVal Command As String, ByVal PortNum As Integer) As String
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How can I get the port name (COM6 for example) for a given hardware ID, such as USBVid_04d8&Pid_1234, and vice versa? I'm using an RS232 to USB interface.
View 6 RepliesI currently have software that sends out plain text(i.e. 'X') to comm 1 port and was wondering if there was any way to capture that plain text and also respond to that port on the same compute as the port without having anything plugged into the machine (i.e. 9 pin serial cable). I am trying to avoid buy any more hardware as this is an objective to acutally cut down on hardware.
View 1 RepliesI am trying to read a packet of data which has come in from RS232. I need to be monitoring the port until data comes in to be actioned. I have been doing this fine for some time using the following code:
Dim strline As String = Nothing
Dim comPort As SerialPort
Dim bIsOpen As Boolean = False
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The code above works without a problem unles byte 1 or two are greater than 127. Basically, all of the characters that are not converted seem to be 128-255.
I am using VB 2008 express. Clearly I need to read each byte individually and store it as a byte within an array instead of a string but i am not sure how to do this.
how to get around this either through reading bytes properly or through using a different encoding format
I am using a GSM modem RS232 where a sim is inserted. I want to write a VB.NET application so that i can send or rcv messages using the modem. How to proceed for same?
View 2 RepliesAt the moment, I need to write a simple peice of software using VB.
I have a computer with VB2008, a RS232 interface; a electronic scale with RS232 interface; a cable with two female sides(this cable is file transfer cable, it enable data transfer between two computers according to the instruction)
My task is to connect the scale to the computer and the computer will keep track of the data sent from the scale.
how to get started? I'm new to VB and have no background in seiral communication, please give details.
My first question is: I have connected them together with the cable, how can I make sure they are really conected (able to communicate)? And can anybody give a peice of code to let me start building on that?
I have been using VB 6.0 and new to VB.net (VB 2005) I want to know how to read characters from RS-232 port.
I have created serialport object and want to read this sort of thing "A,2451.3955,06715.8253"
i would like to know a method that can read data via rs232 ( i use pic 18f452 to send 5 values(pression, temperature, current, voltage and solar radiation ) of Adc conversion )i successed to read one value at first ( sending one value via pic) , but i couldn't read more than one at end
so, question is how to do that ? how to separate between the data?
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I was trying to use the web service for currency rate to get the rate, although I have already add web reference to [url] but I still do not know how to retrieve it from there. I'm using asp.net vb.
View 1 RepliesEach Taste Tester rates the two drinks on a scale of 1 to 10, with 10 being the best.I need to display the summary of results that contains the current results of the taste test.It should display the winner, the total number of taste tester and the average rating for each drink.My program has three forms.The main form, the input form and the summary form.For some reason, I can not get my results to display in the form. Plus it is not calculating my results correctly.[code].....
View 6 RepliesPossible Duplicate: Creating a Serial Port in code in VB.net
I wanna connect RS232 to vb in order to set an input for motor such as the steps and motion. I'm really new with VB. I'm using VB2010 express. Can you help me with the coding?
Possible Duplicate: Creating a Serial Port in code in VB.netye. I wanna connect RS232 to vb in order to set an input for motor such as the steps and motion.
View 5 Repliesi have some code here that is used for a project, the code is used in visual basic 6 and i am using visual studio 2008 in the project i have to communicate with a PIC micro controller, i do not know what to do because in visual basic 6 w use MS comms and in visual studio 2008 uses a serial port thing code below.[code]
View 3 RepliesI need to write and read data from a RS232 port. On the RS232 port there is a RFID Card reader-Writer connected. So I need to send hex codes to the device, and have to poll every 1sec if there is a card in the system. If there is a card I need to read the info that is on the card. My biggest problem is I think is that I am not sure how many characters there will be in return after the read command (maybe it is always the same length this I am not sure). What is the right way to read-write to the com port. So I always got the same result and not skipping a code.
View 12 RepliesI want to create an application in VB.net that will read data outputted by a RFID reader on serial port.I want to know how will my application be able to identify the interrupt generated by Serial port and will read data from there?
View 2 RepliesDoes anyone knows how to program using vb.net with rs232 module?, all i know is that i should use a compolet, but i can't understand a thing regarding the sending and receiving bit data to the machine..
View 1 Replies