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Siemens s7-200 PLC & Visual Basic
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Source：Internet Author：Unknow Pubdate：2008-04-14
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ChickenEngineer (Mechanical)
8 Mar 06 16:10
I'm new to all this so bare with me...
I have a Siemens S7-200 series with a network module up and running and doing what I need it to do. Now I'm trying to write a Visual Basic program to access some of the memory locations so that I can do some DHTML programming...
I know there is an Alan Bradley plug in for VB that you can purchase to communicate with their PLC's. I've called Siemens and the only response I get out of them is they don't support Visual Basic. Does anyone know if there is a way to make Visual Basic talk to a Siemens PLC?
Thanks!
OR
A way to publish some data stored in the memory locations of a Siemens PLC into an HTML file. I know you can get an internet module, but I'm trying to gather a bunch of information from many PLC's. I would perfer to stick with VB...
Travis
字串4
xwb (Computer)
9 Mar 06 11:09
If you're running VB, you're probably running on one of the Windows OSs. These do not allow direct access to memory as such so I don't know how you're going to access the card via memory. Are there any I/O ports you can hit?
FrieditAgain (Electrical)
6 Jun 06 14:47
I'm as much of a newbie as the next guy (meaning completely) but I thought you could make S7 write to an excel file....no?
MarcSinclair (Industrial)
10 Jun 06 21:39
Hi,
Of course Siemens don't support VB, it is obsolete!
You don't say which network module you are using, The CP243-IT module already has a webserver onboard, so you can use HTML directly, embedding java applets allows direct access to all the memory and IO images. there is an online demo at http://s7-200.germainesystems.co.uk. 字串2
If you are using the CP243 then consider Libnodave, this will also work with the serial ports on the CPU. - I believe that it supports legacy VB too :) it's open source and free at http://libnodave.sourceforge.net/
Regards
Marc Sinclair
IONESCU (Industrial)
1 Nov 06 8:37
i HAVE A PROJECT IN PROTOOL/PRO AND I WISH TO CONFIGURE SOME ALARMS BUT I DON'T KNOW HOW TO MAKE.
CAN SOMEBODY HELP ME?
THANK YOU!
EEMama (Electrical)
15 Dec 06 22:23
My machines run on a pure VB front end using primarily Siemens components from their 840Di, 611U Drives and their servo motors. I am responsible for all the programming changes. I am no expert at this point, however, if you tell me what date you are trying to read I can probably get you pretty close to the code you need.
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