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Problem Connection S7300 with S7 Protocol suite in Wincc 7.2

Created by: alessiodp at: 4/29/2014 4:51 PM (5 Replies)

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4/29/2014 4:51 PM	Rate (0)
alessiodp Posts: 5 Rating: (0)	Hi, I can't connect wincc 7.2 with my PLC (CPU 315). I ping the PLC and I can connect to PLC by Step 7 v5.5 SP2 but when I try to connect by wincc 7.2 (via S7 protocol suite) I can't. I looked the WinCC Channel Diagnosis and the state is "disconnected" with error 4116. The error says: Rack/Solt not correctly configured OR Number of maximum permitted connection in AS exceeded. But if you look in screenshot attachment, you see that rack/slot number is correct and number of connection not exceeded. Where am I wrong? Thanks a lot. Best regards. Attachment C:\Documents and Settings\atironi\Desktop\problem_communication_via_s7_protocol_suite.jpg (1674 Downloads)
alessiodp Posts: 5 Rating: (0)	Last edited by: alessiodp at: 4/29/2014 4:56 PM
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4/29/2014 5:29 PM	Rate (1)
crazyCow Gold Member Joined: 12/4/2009 Last visit: 7/30/2025 Posts: 453 Rating: (137)	alessiodp, last time I saw this error on properly configured channel driver the problem was absence of SIMATIC NET installation. Maybe installation/reinstallation of SIMATIC NET could resolve this issue... Hope this helps. Regards.
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4/30/2014 8:59 AM	Rate (0)
alessiodp Posts: 5 Rating: (0)	But withtwo PLC S7-1200 in the same network, I can connect without problem, so I think taht SIMATIC NET v8.2is properly installed. Maybe I should try another version of SIMATIC NET? Best regards.
alessiodp Posts: 5 Rating: (0)
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4/30/2014 9:13 AM	Rate (2)
Wizard Diamond Member Joined: 4/24/2006 Last visit: 7/31/2025 Posts: 9027 Rating: (1199)	Hello alessiodp, Please try the following: Go to hardware configuration of PLC. Double click on PLC and go to tab "communication" Here you will see 'S7 Basic Communication' with a number 12. Please reduce it to 5. (So you will release communicationresources on CPU) Download hardware configuration. And try to connect WinCC. (Let us know the result) Best regards, Wizard

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This contribution was helpful to 2 thankful Users crazyCow S.Veselinov

5/6/2014 8:28 AM	Rate (0)
alessiodp Posts: 5 Rating: (0)	Thanks for the reply. I reduced from 12 to 5 the 's7basic communication' and now the communication with WinCC7.2 and the PLC s7-300 working properly. Thank you very much. Best regards. Attachment C:\Documents and Settings\atironi\Desktop\reduced_reserved_communication.JPG (1658 Downloads)
alessiodp Posts: 5 Rating: (0)
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This contribution was helpful to 2 thankful Users Wizard Healthcheck

8/23/2024 1:07 PM	Rate (0)
\|zofim\| Advanced Member Joined: 9/23/2014 Last visit: 7/29/2025 Posts: 24 Rating: (1)	Thank you, I was having the same problem, after I reduced S7 connections from 12 to 5, my S7-300 was able to communicate with WinCC 8.0 SCADA.

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Problem Connection S7300 with S7 Protocol suite in Wincc 7.2

Created by: alessiodp at: 4/29/2014 4:51 PM (5 Replies)

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Problem Connection S7300 with S7 Protocol suite in Wincc 7.2

Created by: alessiodp at: 4/29/2014 4:51 PM (5 Replies)

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Last edited by: alessiodp at: 4/29/2014 4:56 PM

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