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Profibus DP Communication between two Siemens Intelligent CPU's
Created by: Tariq at: 11/24/2007 8:17 AM (2 Replies)
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| 11/24/2007 8:33 AM | |
Joined: 9/27/2006 Last visit: 1/14/2026 Posts: 12481 Rating:
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Hello Tariq; The following link shows you how to interface a S7-400 master with a S7-315-2DP slave: http://support.automation.siemens.com/WW/view/en/6518822 If you replace the S7-400 station with a S7-315-2DP as master, and use a S7-316 as slaveand follow the configuration proposed, it will apply. Just remember, for this configuration to work, simply follow these tipsboth CPUs must be in the same project (so they share Netpro configs); configure the slave station first; then use the slave as defined in the "Already configured stations" folder of the slaves available for the master. Once you have tried the memory configuration proposed in the download, simply adapt you data exchange addresses to fit your project, it should be clear what you need to do. Hope this helps, Daniel Chartier |
| 11/25/2007 11:40 AM | |
Joined: 1/7/2006 Last visit: 5/11/2025 Posts: 2705 Rating:
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Dear Tariq, As first you have to place your slave (CPU316) in the hardware configuration as slave, you may also place some bytes into the communication tab, I suggest to do first 1 byte, after that is working you may do some more and also >4 Byte (consistent). Then call the hardware configuration of the master (CPU 315) where you also make the PROFIBUS DP and switch the CPU 315 as master. Now you may look into the hardware catalog where the CPU have to be choosen from "PROFIBUS DP" --> "Configured Stations" --> "CPU 31x" (please consider that the CPU 316 have to be placed in the catalog as a GSD-file, this file you could find on the internet under PROFIBUS GSD files : SIMATIC). Via Drag-and-Drop you could place the orphant CPU 316 on the Profibus network of the master (CPU 315). There is a list with the CPU316 and that have to be connected. As last the I/O that have to be communicated have to be placed into the communication tab and after that the master and the slave have to be loaded and ready is Tariq. |
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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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