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A question regarding backplane bus system of CPU

Created by: Georgio at: 11/26/2012 10:57 AM (3 Replies)

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11/26/2012 10:57 AM	Rate (0)
Georgio Bronze Member Joined: 10/28/2008 Last visit: 12/2/2019 Posts: 243 Rating: (14)	Hi all. I have a question regarding backplane bus system of CPU S7 300/400 PLCs. We have a set with CPU315 DP and CP 343 Lean CP. We have managed iso-on-tco communication between PLC and third-party system. But our throughput of data is very low. We searched some reasons for that. We found out that backplane bus system between CPU and CP can make some reason. I have never think about backplabe bus. Can you recomend some documents or faqs about this ?? I have heard that backplane bus is MPI. If I want to change settings of MPI in our CPU I can only change it between 187,5kbit/s and 19,2kbit/s. Its very low for our application (if MPI is backplane bus, I do not know..). Thank you for your help. Best regards, Georgio
	Georgio
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11/26/2012 11:22 AM	Rate (0)
manmeet Gold Member Joined: 1/3/2006 Last visit: 12/24/2019 Posts: 725 Rating: (66)	Checkthis

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11/26/2012 1:30 PM	Rate (0)
Georgio Bronze Member Joined: 10/28/2008 Last visit: 12/2/2019 Posts: 243 Rating: (14)	Thank you a lot. Shame on my searching skills Best regards. Georgio
	Georgio
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2/10/2014 10:41 AM	Rate (0)
GrasserF Silver Member Joined: 11/19/2013 Last visit: 6/23/2014 Posts: 348 Rating: (5)	new question is splittet to troubleshooting within CPU 314C-2PtP and FM 354 SERVO, error 11:94.
	Best regards / viele Grüße GrasserF
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