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DP-communication!

11/23/2006 9:14 AM	Rate (0)
L-O Posts: 12 Rating: (0)	Hello! We are going to build a S7-400 (CPU414-2) system with DP-bus and I/O:s. Now our customer wants us to connect to a Melsec-system with the DP-bus and in that case the S7 is DP-slave and the Melsec is DP-Master. Can we use the same DP-bus for both I/O-connection (ET200) where the S7 is Master and for the Melsec connection where the S7 is a slave? Or should we have two sepated DP-busses?
L-O Posts: 12 Rating: (0)
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11/23/2006 11:30 AM	Rate (0)
Wizard Diamond Member Joined: 4/24/2006 Last visit: 12/22/2025 Posts: 9088 Rating: (1202)	Hello, I think you should use two separate Profibus networks. Best regards, Wizard

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11/23/2006 8:39 PM	Rate (0)
Remark Bronze Member Joined: 9/1/2006 Last visit: 10/4/2025 Posts: 193 Rating: (13)	Hi L-O, You might consider using a DP/DP-coupler. ThenbothCPU's can be master and the DP/DP-coupler is a double slave. René

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11/24/2006 9:01 AM	Rate (0)
L-O Posts: 12 Rating: (0)	Ok, then I know, two DP-nets or a DP/DP-coupler! Thank you! L-O
L-O Posts: 12 Rating: (0)
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11/27/2006 11:52 PM	Rate (0)
Late Platinum Member Joined: 1/7/2006 Last visit: 5/11/2025 Posts: 2705 Rating: (321)	Hi, You may use the MPI/DP port as a DP=Slave if you didn't need the MPI port.....
	I hope that the answer will help, if you have still questions, don't hesitate to ask me. All the best, Late Never say never, think in solutions, not in trouble......
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