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distributed I/O's over the Profibus network

Created by: Andoo at: 10/20/2008 12:07 PM (15 Replies)

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10/20/2008 12:07 PM	Rate (0)
Andoo Regular Member Joined: 10/15/2008 Last visit: 6/7/2024 Posts: 14 Rating: (0)	Hy, I have a machine which is working properly, and now I want to made a test environment to can test the principal parts of the machine. My problem is cause I have distributed I/O's over Profibus network and I want to test the parts of the machine when those aren't assembly like a unit, that means some DP from my network will miss, and I don't want to load the hardware configuration for every part separatly. I want to load the HW configuration one time and after that to switch from HMI which part I'll test. It's that possible? or there is a method to simulate the DP..? I don't know maybe u have a better ideea the I had. Thanks

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10/20/2008 12:20 PM	Rate (0)
Aret Posts: 2348 Rating: (264)	It's quite difficult to simulate DP-slave itself, but what can you do: DownloadwholeHWconfig. DisablemissingnodesbymeansofSFC12. Simulate DP-master's inputs (if you use MS or DX communications) - for example by reading not inputs but bit memory (or any other simulating method)
Aret Posts: 2348 Rating: (264)
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10/20/2008 1:06 PM	Rate (0)
Andoo Regular Member Joined: 10/15/2008 Last visit: 6/7/2024 Posts: 14 Rating: (0)	Hy Aret, I found something interesting on this link https://support.automation.siemens.com/WW/llisapi.dll?func=cslib.csinfo&objId=22821313&load=treecontent&lang=en&siteid=cseus&aktprim=0&objaction=csview&extranet=standard&viewreg=WW and on my case when i test a part of machine the other part are physical separated. so for each DP i should call SFC12 with LADDR corespond to the PA for that DP..?

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10/20/2008 2:23 PM	Rate (0)
Aret Posts: 2348 Rating: (264)	Yes, you must call one time SFC12 for each slavethatisabsent. Didn't understood about PA, sorry
Aret Posts: 2348 Rating: (264)
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10/21/2008 10:45 AM	Rate (0)
Andoo Regular Member Joined: 10/15/2008 Last visit: 6/7/2024 Posts: 14 Rating: (0)	PA- i think it's about profibus address which is physical set on DP module on the field. But i try to use SFC12 and I succeed to deactivate a DP wich is missing from the profibus network and for the LADDR param.I put the Diagnostic Address of the DP which was deactivated. Another problem is: when I try to activate the same DP which was deactivated , the job it's still active and the DP it's still deactivated, the DP is active just after I reset the CPU, that could be because I don't have the DP module physical on the network..?

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10/21/2008 11:41 AM	Rate (0)
Aret Posts: 2348 Rating: (264)	Ok, i see now. Just PA is one of PROFIBUS standarts for explosive areas. If docs youcan read, that before activating new job you must wait until first one finishes. Is deactivation successefull?
Aret Posts: 2348 Rating: (264)
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10/22/2008 3:19 PM	Rate (0)
Andoo Regular Member Joined: 10/15/2008 Last visit: 6/7/2024 Posts: 14 Rating: (0)	i think yes.... and that because the status of the leds is:Run green and DC green the other are off...

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10/23/2008 7:09 AM	Rate (0)
Aret Posts: 2348 Rating: (264)	And what happends after reactivation?Isjobsuccessfull?WhatisLEDbehaviour?
Aret Posts: 2348 Rating: (264)
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10/23/2008 9:25 AM	Rate (0)
Andoo Regular Member Joined: 10/15/2008 Last visit: 6/7/2024 Posts: 14 Rating: (0)	the reactivation i'm not sure if it's working ok, because the LED behavior it's the same like the one for deactivation, and that before i made a restart of cpu, after restart the behavior of LED is like a got some profibus errors, that's mean my DP module is active but is missing

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10/23/2008 9:52 AM	Rate (0)
Andoo Regular Member Joined: 10/15/2008 Last visit: 6/7/2024 Posts: 14 Rating: (0)	Now i want to ask you, if I could read the diagnostic address of a DP using sfc or sfb. Like u can see on the attach file I use CPU315 2-DP, on the profibus network i have a DP with PA 15. Attachment HW picture.JPG (287 Downloads)

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