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Type: Posts; User: arj3090

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  1. VS 2010 Re: [RESOLVED] Continuous data update on a background worker thread?

    Yes, that is also true. The license requires the complete solution to stay together with all drivers and controls. If you have an already developed project, you can add your existing project to the...
  2. VS 2010 Re: [RESOLVED] Continuous data update on a background worker thread?

    The only thing that some may consider a "catch" is that it is licensed under GPL meaning that you have to distribute the full source to the end user. if you are using it for internal projects, then...
  3. VS 2010 Re: [RESOLVED] Continuous data update on a background worker thread?

    You may want to look at AdvancedHMI. It has Modbus drivers that run subscriptions on background threads that give you continuous updates of data at a rate you select with a PollRateOverride property....
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    Re: Exploring computer programming

    Do you have an OPC driver for your PLC or does it support Modbus/TCP?
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    Re: Exploring computer programming

    A large number of PLC programmers have got their start into VB programming by using AdvancedHMI. It gives you all the tools needed to build an HMI for a PLC in Visual Studio without the need to write...
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    VS 2005 Re: serial Communication between PLC and C#

    OPC DA may give the most options in the way of various vendor's PLCs, but is by no means the easiest to use. It is based on ActiveX technology which is not ideal for .NET languages. It also requires...
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    VS 2005 Re: serial Communication between PLC and C#

    What make and model PLC?
  8. Re: Ideas on how to implement without multiple inheritance

    This is basically what I want to achieve, but unsure how. Also the controls and drivers are added visually and automatically linked to the communication driver in visual studio:


    If...
  9. Re: Ideas on how to implement without multiple inheritance

    The drivers are separate classes that implement an interface in order to allow the control to get its value from any number of different devices. The code in the controls with communications uses a...
  10. Ideas on how to implement without multiple inheritance

    I have a library of graphical controls used to display values from a remote device. The controls are typically graphical objects such as a digital meter, analog meter, vertical bar, etc. I first...
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    VS 2008 Re: Dynamic data updation in a Textbox

    It sounds like you need to call Refresh inside the loop.


    You may be interested in this project :

    https://sourceforge.net/projects/advancedhmi/
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    Re: [RESOLVED] HMI Development

    There is a much easier way... download this project:

    https://sourceforge.net/projects/advancedhmi/

    Open the sln file
    Build
    Add an EthernetIPforSLCMicro to the form
    Set the IP address in the...
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    VS 2008 Re: Reading and Writing Strings

    If someone can only get job security by keeping secrets, then they are probably not very good at their job.

    So anyway, how is protocol implements? Is it using RSLinx, an 3rd party OPC, or a...
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    Re: Visual basic .net and PLC

    Some Omron PLCs use the HostLink protocol which is fairly simple to implement.

    I have some code I did several years ago and this is the string I sent to the PLC to get data:
    ...
  15. Listing Forms in Current Project Using Reflection

    The following code adds the list of forms in the current project to a ComboBox. I need to use this in design time, but it will not list all the forms until after building the project. Is there a way...
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    Re: [2005] Reconising Enter Key

    You must also set the KeyPreview property of your form to true.

    I don't think that event mentioned above catches the Enter key, but here is another way that I know will:


    Protected...
  17. Re: [2008] User Control Button To Open New Form

    There is no more code than what is above. I created a new project, added a new class, then added the code above to the new class. I then build the project.

    I can then drag and drop the...
  18. Re: [2008] User Control Button To Open New Form

    That gets rid of my errors, but now my problem is setting which form to open in the property window. Although I have 2 forms in my project, I only get the form on which the button resides as the...
  19. [2008] User Control Button To Open New Form

    I am trying to create a User Control Button that will allow a button to be dropped on the form, then set the FormToOpen property with the form in the project that you want to Show. Here is what I...
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    Re: Serial Port programming w/ VB .net

    If you want to wire a relay directly to the PC, the serial point is not the best option. You probably want to use the paralell port. It is 5V signals and has more Inputs and Outputs available.

    If...
  21. Re: Getting components from all forms in a project

    The intention is to allow simple applications to be built using the communication component and user controls without the need for the user to write any code. By having it as a component on a form,...
  22. Getting components from all forms in a project

    I am creating a user control that uses a communication component. The communication component uses the serial port, so only one instance can exist in a project, typically on the main startup form.
    ...
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    Re: is this possible????

    This thread is old, but for future reference, there are some open source drivers that communicate to micrologix and SLC. They can be found on sourceforge.net by searching DF1:
    ...
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    Re: Writing and reading a PLC

    What make and model PLC are you want to communicate with?
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