5/28/2013 12:19 PM | |
Posts: 27 Rating: (0) |
Is it possible to make S7-1200 work in a Profibus PA network? Can I configure DP/PA Link and Coupler in TIA Portal? |
5/28/2013 1:53 PM | |
Joined: 9/23/2005 Last visit: 9/19/2024 Posts: 4347 Rating: (1446)
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Hi, it is possible (as for all DP masters) but it should be generate a GSD with your PA configuration (not so easy). Take a look at How do you connect the IM 157/IM 153-2 in the DP/PA Link to an external master or a SIMATIC S5?(GSD-Tool) http://support.automation.siemens.com/BR/view/en/26562190 |
Denilson Pegaia |
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5/30/2013 8:44 AM | |
Joined: 10/7/2005 Last visit: 9/24/2024 Posts: 3022 Rating: (1054)
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Hello Twinsen
I agree with Pegaiathat it'll have to work, but haven't tried this onemyself though yet.
I agree and am not too sure why Siemens hasn't (yet?) included the DP/PA link as metadata in the HW catalogue of TIA Portal (well, I couldn't find it anyhow). Question: Will you have any other DPSlaves on this and/or more than 16 or 32 PA devices? If not, I wouldset it up for 45.45 kbpsbaudrate and only use "pure"PA coupler on it (see also What must you watch out for when connecting PROFIBUS PA devices to the PROFIBUS DP? for more on this). ThePA coupler is fully transparent so you do NOT configure it in the HWconfig at all. All you have to do is to drag the PA devices directly onto the Profibus. Since the PA devices are now directly "visible" to the 1200's DP Master CM, each one counts as "DP Slave" and the limit of DP Slavesfor a 1200 V3 is 32 and for older ones16. If you don't have any other DP Slaves on the CM 1243-5, this solution willbe performance wise as good as usinga DP/PA link. PA always operates at 31.25 kbps, the advantage of using a link is that higher DP baudrates are allowed and that your PA devices do not consume DP node addresses as they are all "hidden" behind the DP/PA link. It is also cheaper as you do not need the IM153-2. P.S: I have this solution running with a 1200 and can tell you that it does work (albeit I'm using a Procentec COMbricks based transparent PA coupler). I hope this helps |
Cheers |
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