11/14/2020 6:45 PM | |
Joined: 9/27/2006 Last visit: 4/27/2024 Posts: 12257 Rating: (2665)
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Hello Jeff; I hope that the 24 hour silence from your part means that your process is now working well (or at least to your satisfaction). The ON/OFF functionnality you mention on the the Profibus cable is probably the terminating resistor switch on the Profibus connector; if it is ON, the Profibus signal can continue to the next node; if it is OFF, the signal is terminated on that node, and the transmitted signal is correctly adapted by the termination circuit to eliminate reflections on the bus. Only 2 stations on a simple bus should have their terminators ON. And these are the 2 stations at each end of the linear bus, the end-nodes. It can become more complicated with complex networks, where repeaters are used for example, but basically that is the rule. And that termination circuit is also one of the most frequent causes of Profibus network failures. See the following article for more details and important information, it could be helpful if you ever face a similar situation. Top 5 reasons your Profibus network failed Hope this helps, |
Last edited by: dchartier at: 11/14/2020 18:47:45 |
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