7/30/2014 11:07 AM | |
Joined: 10/7/2005 Last visit: 9/22/2024 Posts: 3021 Rating: (1054)
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Hello MicroMan jolly good question I must say and here's my take on this: Peoplegenerally do consider the repeater part of the cable and do NOT take its delay into account. Saying that, a ProfiHub (just like any other PROFIBUS repeater) does cause a slight delay. How much is dependent on the baudrate and the valuescan be foundin the technical data section of the ProfiHubmanual (available at http://www.procentec.com/downloads/index.php). You'll see them specified inbitrate values, e.g.1.4 Tbit at 1.5Mbps. A Tbit is 1/baudrate, so it has a valueof0.6667 µsfor 1.5 Mbps, which then equatesto a time delay of 0.9333 µs(1.4 *0.6667 µs). I hope this helps (and leave it as your call it you want to include this almost 1 full microsecond delay per ProfiHub in your calculations or not ). |
Cheers |
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