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| 9/18/2011 3:06 PM | |
Joined: 10/7/2005 Last visit: 3/24/2025 Posts: 3042 Rating:
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Hello aag_03 I have a copule of suggestionsfor you: 1.) If you don't have it as part of your Profitrace package, add the Profitrace OPC Server to your Profitrace. Keep a Laptop or Workstation PC with Profitrace/Proficore connected to your Network 24/7,link the networks statistics (e.g. retries, corrupted message, sync's etc.) via OPC to your SCADA system and log them there. This way you'll get an idea when the events occur and can put them into context against other things that happen in your Plant at the same time (e.g. perhaps the netwrok problems only occur when a certain motor starts). 2.) Buy Procentec's COMbricks and use it as a long term Network Analysis tool. Too manyfeatures to to mention here, but put simple ithas Profitrace as a Webserver inbuilt into the headstation (1Band 1C) and allows you to keep a local event log inside the headstation and evaluate your Network remotely via an Internet Browser. More importantly though it allows you to send out e-mails if and whenretries, corrupted message, sync's etc.occur (i.e. this too will allow you to put events into context against other things that happen in your Plant at the same time). On top of thatCOMbrickscan be a modular repeater, I/O station, DP/PN coupleretc. as well as being able to permanently monitor up to 4 Networks at the same time (with headstation 1C, headstation 1B can monitor2 Networks). I hope this helps |
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| 9/20/2011 12:04 PM | |
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Joined: 10/7/2005 Last visit: 3/24/2025 Posts: 3042 Rating:
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Hello aag_03 my suggestion would not be "something like ibaPDA" but exactly that. What you'd need (can use) is: ibaPDA, ibaFOB (iba Fiber Optic board for a PC or the PC Express card version of it for a Laptop), a couple of meters of a simple ST connector based FO cable and an ibaPADU-8 (+/- 10V version, Profibus signals a re RS485 based and typically around 5V to 7V max depending on chipset). Link it all up, use two AI channels of the PADU-8 (one to monitor/measurethe Profibus A line,one for the B line), perhaps even create a virtual signalin ibaPDA which would be the A-B differential signal (or do it later in ibaAnalyzer) and you have your long term Profibus signal monitoring system. I hope this helps and perhaps others have more ideas on this. |
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Cheers |
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| 9/20/2011 2:12 PM | |
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Posts: 84 Rating:
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Dear fritz! Great thanks to you for your suggestion based on iba. It's very interesting solution. I will look forward to take it on. Best regards. |
Last edited by: aag_03 at: 9/20/2011 9:15 PM |
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| 9/22/2011 1:51 PM | |
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Joined: 10/7/2005 Last visit: 3/24/2025 Posts: 3042 Rating:
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Hello aag_03 the FO cable is used to link the PADU (Parallel Analogue Digital Unit, the device that measures the signal) to the ibaFOB (FOB = FiberOptic Board) card in the PC/Laptop (which is then available to ibaPDA (PDA = Process Data Aquisition)for aquisition, analysis andstoring). I fear though I haven't thought mysolution through. APADU-8 is "only" capable of 1kHz dataaquisition on every channel (i.e. asample every millisecond). A PADU-8 M is capable of 25 Khz data aquisition on every channel (i.e. a sample every 40 micro second ). While this is fast,I fear it is not quite fast enough to obtain useable signal level representationsif your Profibus is runningat for example 1.5Mbps. |
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Cheers |
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