Dear all,

I want to create an application with C# in visual studio with some buttons to connect my PC with Siemens PLC and to exchange data over TCP/IP. 

I need a guidence about from where should I start. any document or video or anything can help are appreciated.

Regards 

T.Ebrahem

Hi,

please have a look to youtube -

or this link:

Programming an OPC UA .NET Client with C# for the SIMATIC NET OPC UA Server

I hope this will help you a little bit - I myself have no experience with it, sorry.

Regards,

Towome

FYI

http://snap7.sourceforge.net/

Hello,

it depends for first if you want use other products (libraries) sugested in previous posts or you want create your own programmed communication. In case of own, on PC you need implement socket connection and on PLC T instructions (TCON, TSEND,...) or TSEND_C/TRCV_C instructions. In this case you must simply define what data will be used in exchange, for this you need prepare both sides code.

Hello Duris_I,

Thanks for you and the guys answerd before. Actually I would like to do my own communication. I dont want to use libraries such as S7.Net or Libnodave. I want ot learn how to setup my own communication using TCP/IP protocol. So I really appreciate if you can guide me from where should I start. 

Kind Regards

T_Ebrahem

Hello,

ok, now question is, what exact PLC with suitable Ethernet interface you have and what Automation SW?

Update: pls from my side you can get help/ideas only to Siemens side. How to program VS application with TCP/IP you can use uncle Google and MSDN.

Hello Duris_I

I use CPU 1215C DC/DC/DC with TIA V13 SP1 Update 9.

Regards

T_Ebrahem

Hello,

I recommend start for first in web with TCP/IP theory. For S7-1200 PLC start pls here: Example link Dennilson's topic shows good example how create connection with (in this case) Hyperterminal SW included in Windows. Also other users posts can be helpful to see what they need solve and how probably they done. You have 2 choices:

1. use TCON, TDISCON, TSEND, TRCV instructions

2. TSEND_C and TRCV_C instructions

You can select one and start build your TCP communication. I recommend build S7-1200 side for first, because you can chcek your functionality with external SWs. If you'll have all good prooved on S7-1200 side, you can start build your C# application. Don't hesitate ask other questions.

Hello Duris_I,

Honestly I need help with the visual studio side. Im familiar with the send/receive functions on the PLC side, but my problem is the C#. Im just new to it. I'm particularly interested in using the C# application with PLC to communicate and send/receive data. So if you know any manual that can guide me through this, I appreciate it. 

Regards

T_Ebrahem

Hello,

in this case only uncle Google can be helpful, also other sites as Codeproject and similar sites. Also MSDN depended to problematic can be helpful, like this (I didn't test it):

C# asynchronous Socket Example

Also at bottom of page you have Client example. This can be good start for you.