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How can I use DFProfi II to monitor a Gateway ?
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hurban
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02-29-2012 09:24 AM
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Hi everybody
I am a total newby to Profibus, so excuse me please, if this is a silly question:
I have a Simatic S7 400 controlling (via Profibus) a robot application on a factory floor. The profibus network also contains a gateway slave to RS-232 which communicates with a LabVIEW RT image processing system. Basically the gateway (HMS-Anybus) is nothing more than a shared memory space which can be accessed from both the Profibus- and the RS-232 side which seems to me a very simple and efficient solution.
What I would like to do in order to investigate (existing???) timing problems in the system is the following:
I have a DF-Profi II in a PXI-Rack and would like to connect this to the Profibus network and use LabVIEW to watch/log the communication between the S7 and the RS-232 over the gateway.
Is this possible? Can anybody give me a few hints how to configure the DF-Profi II? It would have to be in "master" mode, wouldn't it ??
So that would make 2 masters (S7 + DF-Profi) on the bus then?
Any little bit of information is greatly appreciated
Thanks
HU
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Accepted by topic author hurban
Wetzer
NI Employee (retired)
03-07-2012 03:45 AM
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Hello Hurban,
in my opinion, a Multimaster Network is what you need. See also this link:
Further Information on the device you intend to use can be found on this page:
Best Regards!
Moritz M.
03-07-2012 07:43 AM
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Thanks a lot Wetzer for the good answer!
Your link seems to refer to exactly the same problem as I have, so I will try the suggested approach. For any further in-depth questions I think I will try giving the Comsoft people a call. I also found the HMS / Anybus support in Germany really excellent - I had a few "newbie" questtions trying to get my system working and they could always solve my problem in a matter of a few minutes. So the Anybus gateway in my opinion is a really clever choice for connecting NI hardware like the EVS to the Profibus.
Many thanks again for you helpful hints
HU
