HELP: VB program codes to communicate with PLC unit

velo · Aug 26, 2005

Hello peeps,
i'm doing a Visual basic6.0 program codes to communicate with PLC unit(NAiS FPG-C32T2) via a RS232 link.. what i need to do is create a touch screen "START" "STOP" "RESET" BUTTONS
i'm new to VB i need help to the codes and the way PLC AND VB communicate

jstolaruk · Aug 26, 2005

You'll need to get a copy of the PLC's communication protocol, which is generally manufacturer specific. I don't recognize the part number you quoted so you'll need to do some searching on the web and then contact the manufacturer.

If you're unfamiliar with the way VB uses serial ports, I would recommend doing a search for "visual basic user groups" on the web and checking out many of the search results. You'll get more detailed information there then at this PLC bbs.

Good luck.

jimbo3123 · Aug 26, 2005

jstolaruk said:
If you're unfamiliar with the way VB uses serial ports, I would recommend doing a search for "visual basic user groups" on the web and checking out many of the search results. You'll get more detailed information there then at this PLC bbs.

Good luck.

This is a good VB forum: http://www.visualbasicforum.com/index.php?

mpiotro · Aug 26, 2005

does your plc have ascii character recognition?

if so, a crude but workable application would be to have your vb app send a specific character for each button clicked on the hmi to the plc.

here's a few more links to help you out on the vb side:

http://www.gotdotnet.com/workspaces/workspace.aspx?id=0a680784-1d84-4e0a-8a62-9dcbcf79e1fb

http://www.gotdotnet.com/workspaces/workspace.aspx?id=0a680784-1d84-4e0a-8a62-9dcbcf79e1fb
http://www.hardandsoftware.net

-Mike

ayman metwally · Aug 26, 2005

Two years ago I saw that NAIS manufactuerer is offering an Activex control that allows VB/VC programmers to easily communicate with their all PLC families.
So check it, It'll help you alot. (I can't find the link now)

velo · Aug 26, 2005

hi, i don't know how to find the protocol can ya help me? =(

velo · Aug 26, 2005

Can u eleborate more on wat u said? the link doesn't seem to have codes that i can download or use,can't see any VB codes,only introduction.
Hope it's ok for u to contact thru email: [email protected]

zawthet · Aug 27, 2005

I also was searching through PLCs.net forum two weeks ago. I found that the following links might be useful for you. You can find VB Code for communication with NAIS PLC.

http://www.plcs.net/cgibin/dcforum/dcboard.cgi?az=printer_format&om=1910&forum=DCForumID1

For details of NAIS protocol, you can go to NAIS website http://www.nais-e.com and download mewtocol manual.

If you have any problems, keep posted.

I recently finished my VB program to communicate to NAIS-PLC via RS-232 and Ethernet.

velo · Sep 2, 2005

ZAWTHET bro, can u tell me ur Email address .. i like to get more information from u pls reply my frenz

velo · Sep 2, 2005

Peeps!!!!!!!!!i need more help- My PLC Unit(FPG-C32T2) is link to the CPU VIA a RS232link.. that's the only thing i know.Now i need to use Visual Basic6.0++ to create a Virtual " START "STOP" RESET " buttons.. i already have the LAdder logic of the PLC unit to control the movements of the machine.. BUT i don't know what to do so that i can use VB6.0++ to create the buttons to communicate with the PLC unit to control the movements of the machine.. can all the nice peeps here tell me what to do, or give me ur email add for me to get in touch with u. xxxx love u all

jstolaruk · Sep 2, 2005

Here is a link to a Visual Basic Primer for newbies. It doesn't get simpler than this. You should be able to whip something together with just a little reading. Good luck!

rdrast · Sep 2, 2005

Here is a link to software downloads for NAIS PLC's.
You can find several communications interfaces, including an OCX for VB, and an OPC server.

Both are trial versions, but aren't unreasonably expensive to purchase.

zawthet · Sep 4, 2005

You can use MSComm control in Visual Basic 6 to send and recieve the command from Com Port. All the command format is same as the command in mewtocol manual.

If you have any serious problem, you can contact me at [email protected]

Good Luck.

saravanan_rock · Sep 4, 2005

Hi,

As you are not aware about this protocol details i would suggest you try to download NAIS OPC server or DDE Server!!! Life would be easy for you!!

Else you should understand what is MSComm control, how to capture the port, how to send strings, how to create buffer for reply string and handling error code check..

Happy working..

velo · Sep 7, 2005

Thank all of u ppls for the advices.. i'm trying out now. Get to u all soon =)

HELP: VB program codes to communicate with PLC unit

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