7/31/2010 3:20 PM | |
Joined: 10/7/2005 Last visit: 10/19/2024 Posts: 3024 Rating: (1054)
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Hello Zein All Profibus I/O addresses that "belong" to a CP342-5 exist only in the CP342-5 but NOT in your S7 CPU. You'll need to use DP_SEND and DP_RECV (deafult number FC1 and 2)to exchangethese I/O's between youryour S7CPU and the CP342-5 and will typically end up having them in DB's in your S7 CPU. As such it would be meaningless to be able to assign symbolic names to the Profibus I/O addresses of the CP342-5.
That is correct, I/O addresses as well as DP Slave addresses for CP342-5 related DP Slaves are totally independent of the onboard DP port's I/O addresses and DP Slave addresses. You'll find plenty of FAQ's, Example applicationsand Forum related entries concenring the usage of a CP342-5 with a search at https://support.automation.siemens.com, butone of the best starting points is possibly the FAQbelow: What should you watch out for when configuring a CP342-5 as DP master? I hope this helps |
Cheers |
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