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Limitation of using CP in S7400

8/13/2008 3:00 PM	Rate (0)
shambo Posts: 20 Rating: (1)	Hi Can anyone tell me is there any limitation on number of CP I can use in S7-400 PLC in the same UR1rack? If so what is the limitation ?
shambo Posts: 20 Rating: (1)
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8/13/2008 3:14 PM	Rate (0)
dchartier Grandmaster-Expert Joined: 9/27/2006 Last visit: 4/27/2025 Posts: 12347 Rating: (2710)	Hello shambo; the following manual (http://support.automation.siemens.com/WW/view/en/14016796) on S7-400 CPU specifications states that themaximm number of CPsfor Profibus and Ethernet is 10; for Profinet is 4; for PtP the limit depends on the number of available connections. Hope this helps, Daniel Chartier

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8/13/2008 6:15 PM	Rate (0)
jklm Platinum Member Joined: 12/22/2006 Last visit: 1/25/2022 Posts: 1742 Rating: (309)	Hello, Beside theamount of CPs youmay plug, pay also attention that the number of simultaneous jobs may also be limited by the CPU resources. This depends on the used services (S7, Send/rcv,...)
	Best regards jklm Suggestion was helpful? Feel free to rate it.
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