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| 5/28/2008 8:01 PM | |
Joined: 1/7/2006 Last visit: 12/23/2024 Posts: 2705 Rating:
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Hi, If you want to install the PN-devices all after one AP then you couldn't work with high speeds of communication, if it will work at all. When the PN-devices are not after the AP then it is no problem, when using for example 4 PN devices behind the Wireless AP then there will be badwith reservation for the PN-devices, if that is given up and there will not be any disturbance by another communication over the same AP, this of course if the bandwith is enough for the PN-devices (conditions ok). |
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I hope that the answer will help, if you have still questions, don't hesitate to ask me. |
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| 5/28/2008 8:09 PM | |
Joined: 12/22/2006 Last visit: 1/25/2022 Posts: 1742 Rating:
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Hello Villa, Just a personal opinion here. For decentralized periphery over wireless, you normally will use iPCF (rapid roamig hardware required) to ensure good and reliable response times. On the other hand, computers will not support iPCF. Therefore, computers and ET200S will not share the same radio, and there will not be a competition here between PCs and ET200. To mix both (ET200 and PCs), the most common solution is, I think, to use dual radio access points. One of the radios is running iPCF (using the 5Ghz band 802.11a for instance which is normally less croaded and to avoid perturbances from other WiFi in the 2.4 Ghz ISM band), where the second rdiois used to connect computers wireless (802.11 b/g). On the wired side,I wouldprefer Profinet aware switches like Scalance X200for prioritization of Profinet, enhanced diagnostic, ring topology support, .... On the wired side,I donot expectreal performance issues of the network itself with that type of switches. The switching capacity is I believe far above the troughput of most common of applications. Best regards edr |
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Best regards |
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| 5/28/2008 8:20 PM | |
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Joined: 1/7/2006 Last visit: 12/23/2024 Posts: 2705 Rating:
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Hi, It is no problem to do both communication over one channel (there is a RR AP) the PN trafic will have a higher priority, created by the reserved bandwith for that I/O. The disadvantage is that the PC will have no communication if all bandwith is needed by the PN-I/O, but normally you have to set up such communication with enough bandwith to let it work together by choosing the right equipment to communicate. |
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I hope that the answer will help, if you have still questions, don't hesitate to ask me. |
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