RE: Connection to Siemens S7 PLC

[Mark Rivers <rivers@cars.uchicago.edu>]

If this is an EPICS driver, then perhaps you should use the libCom OSI functions for sockets, and not have to worry about winsock2.h, etc.



If you look at

https://svn.aps.anl.gov/epics/asyn/trunk/asyn/drvAsynSerial/drvAsynIPPort.c



you'll see that it does not use any OS-specific code for handling sockets.



Mark



________________________________
From: tech-talk-bounces@aps.anl.gov [tech-talk-bounces@aps.anl.gov] on behalf of Pavel Masloff [pavel.masloff@gmail.com]
Sent: Wednesday, February 22, 2012 6:07 AM
To: Mueller, Joachim
Cc: tech-talk@aps.anl.gov
Subject: Re: Connection to Siemens S7 PLC

Hello all,

Concerning Dirk's s7plc driver (SLS) which is written for linux only, has anyone tried to rewrite it for windows?
I am not that expert in drivers development, but I would be grateful if anyone could help me.
>From what I can see, there are some header files (and corresponding libraries/functions) which are linux specific. For example, <unistd.h>,<sys/socket.h>, <netinet/in.h>. Perhaps, <winsock2.h> might do the trick?

Maybe someone has already tried to port s7plc to Windows platform?

On Wed, Feb 22, 2012 at 1:10 PM, Mueller, Joachim <joachim.mueller@desy.de<mailto:joachim.mueller@desy.de>> wrote:
Hi,

just a few thoughts about the S7. It is not possible to open a Step7 Project for the S7-300
or S7-400 with Step7 MicroWin. These system do not have anything in common than the
name and the vendor. S7-200 has a different architecture than the 300/400 system. And
therefore a completely different programming environment.

I have not tried yet, but I think the S7plc driver should also work with a S7-1200 System
because it is also TCP/IP.

With the CP 243-1 on a S7-200 it should also work, but you cannot use the example project
delivered with the S7plc software.

Greetings, Joachim

--
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Joachim Mueller, Dipl.-Ing.(FH)                                 Deutsches Elektronen-Synchrotron (MKK4)
phone:  +49-40-8998-2562                                                                                                         Notkestr. 85
fax:    +49-40-8994-4305                                                                                                        22607 Hamburg
e-mail: joachim.mueller@desy.de<mailto:joachim.mueller@desy.de>                                                                                               Germany
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>-----Original Message-----
>From: tech-talk-bounces@aps.anl.gov<mailto:tech-talk-bounces@aps.anl.gov> [mailto:tech-talk-<mailto:tech-talk->
>bounces@aps.anl.gov<mailto:bounces@aps.anl.gov>] On Behalf Of Konrad Gajewski
>Sent: Tuesday, February 21, 2012 1:14 PM
>To: tech-talk@aps.anl.gov<mailto:tech-talk@aps.anl.gov>
>Subject: Connection to Siemens S7 PLC
>
>Hello everybody,
>
>I'm new to EPICS and I am planning  to control Siemens Simatic S7-200
>PLC. I have looked in EPIC documentation and found at least two ways to
>connect the PLC:
>
>1. via MODBUS (Asyn) driver over the serial connection (using Siemens
>MODBUS RTU library)
>2. using S7plc driver via TCP/IP and a CP 243-1 Ethernet module.
>
>The programming of the PLC is done using Step-7 Micro/WIN V4.0.
>Unfortunately I can't open the example STEP 7 PLC project  (for S7plc
>driver) in Step-7 Micro/WIN.
>
>Do you have any experience with such a configuration or maybe with
>S7-1200? Are there any better options?
>
>Thanks,
>   Konrad
>
>--
>Konrad Gajewski
>Senior Research Engineer
>Uppsala University                    Tel:    +46-18-4713888
>The Svedberg Laboratory               mailto:konrad.gajewski@tsl.uu.se<mailto:konrad.gajewski@tsl.uu.se>
>Box 533, S-751 21 Uppsala, Sweden
>http://www.tsl.uu.se/





--
Best regards,


Pavel Maslov, MS
Controls Engineer at Pulsed power Lab
Efremov Institute for Electro-Physical Apparatus
St. Petersburg, Russia

Mobile: +7 (951) 672 22 19
Phone: +7 (812) 461 01 01