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<== Date ==> <== Thread ==>

Subject: AW: AW: Connection to Siemens S7 PLC
From: Rekow Jens <j.rekow@fmb-berlin.de>
To: Konrad Gajewski <konrad.gajewski@tsl.uu.se>
Cc: tech-talk@aps.anl.gov <tech-talk@aps.anl.gov>
Date: Mon, 26 Mar 2012 13:49:09 +0200
Hi Konrad,

we only needed to change the Step7 program, we did not need a patch or anything else.

Regards,
Jens



> -----Ursprüngliche Nachricht-----
> Von: Konrad Gajewski [mailto:konrad.gajewski@tsl.uu.se]
> Gesendet: Freitag, 23. März 2012 12:59
> An: Rekow Jens
> Cc: tech-talk@aps.anl.gov
> Betreff: Re: AW: Connection to Siemens S7 PLC
> 
> Hi Jens,
> 
> Thank you for your update. Can you give me some details - was it a Step
> 7 program that you had to change or have you got a patch from Siemens?
> 
> Btw, I'm trying to connect S7-200 PLC via serial line using asyn Modbus
> driver and Siemens Modbus library. So far it's not working (the
> communication works fine, I get the error message from the slave, so I
> hope I can fix it soon).
> 
> Best regards,
> Konrad.
> 
> 
> 23 mar 2012 kl. 12:12 skrev Rekow Jens <j.rekow@fmb-berlin.de>:
> 
> > This topic is a few weeks old already but for your information,
> sometimes 'All is well that ends well':
> >
> > Our connection handling problem is solved after some help of the
> Siemens support. Interfacing with the SLS S7 driver to a Siemens PLC
> directly connecting to a CPU315-2 PN/DP works fine now.
> >
> > The problem we had was a timing issue. Most likely the PLC tried to
> initialize functions to quickly after booting. That made the TCON
> function got locked sometimes.
> >
> > HTH,
> > Jens
> >
> >
> >
> >> -----Ursprüngliche Nachricht-----
> >> Von: tech-talk-bounces@aps.anl.gov [mailto:tech-talk-
> >> bounces@aps.anl.gov] Im Auftrag von Rod Nussbaumer
> >> Gesendet: Mittwoch, 22. Februar 2012 18:20
> >> An: Konrad Gajewski
> >> Cc: tech-talk@aps.anl.gov
> >> Betreff: Re: Connection to Siemens S7 PLC
> >>
> >> At TRIUMF, we are using our own driver to talk to 400-series Siemens
> >> PLCs. It uses asyn, and was modeled after Mark Rivers' modbus PLC
> >> driver. The underlying communications protocol is the Siemens
> >> FETCH/WRITE protocol over TCP/IP.
> >>
> >> Rod Nussbaumer
> >> ISAC Controls, TRIUMF
> >> Vancouver, Canada
> >>
> >>
> >> Konrad Gajewski wrote:
> >>> 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
> >>>
> >
> >
> >



References:
Connection to Siemens S7 PLC Konrad Gajewski
Re: AW: Connection to Siemens S7 PLC Konrad Gajewski

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