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| 12/16/2009 4:53 PM | |
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Posts: 65 Rating:
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hello can any one tell me about th e node adressing of MPI..... |
| 12/16/2009 5:54 PM | |
Joined: 9/27/2006 Last visit: 12/3/2023 Posts: 12184 Rating:
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Hello deepak; What exactly do you need to know about MPI addressing? MPI is a RS-485 communcation link between Siemens processors, including the S7-200 (as a slave). It also serves as the backplane K-bus protocol, so "intelligent" modules such as CPs and FMs are attributed an MPI address by the hardware configurator when one is selected inside a project. A maximum of 32 node addresses are available on the MPI bus, and between processors a segment can have a maximum length of 50m (the MPI interfaces are non-isolated, which limits teh distance the signal can travel). Repeaters can be used to extend the bus lengths, but they also require a node address and they operate with specific setup conditions. The following document covers MPI communication confoiguratiosn, so it only briefly discusses addressing. I hope it serve as a good start for your research. Hope this helps, Daniel Chartier AttachmentCommunicationBook_MPIPart_e.pdf (76 Downloads) |
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