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No communication between wincc 7.4 SP1 Up8 and PLC 1500

4/7/2025 11:47 AM	Rate (0)
Carmendomar_95 Joined: 4/4/2025 Last visit: 4/8/2025 Posts: 3 Rating: (0)	I have a WinCC 7.4 SP1 Update 8 project with SIMATIC NET 14 SP1, and I want to connect to a PLC programmed in TIA Portal 18. However, when I import the export from TIA Portal, everything goes well but nothing related to the certificates appears, and when I switch to Runtime, it does not connect to the PLC. I have checked the PG/PC interface, the IP address, and the configuration options, and everything is correct. I noticed on TIA 17 there is not certificate to import, can be related with that?

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4/8/2025 10:10 AM	Rate (0)
Cookie_M0nster Bronze Member Joined: 10/16/2020 Last visit: 9/3/2025 Posts: 146 Rating: (13)	Hi, Check that you meet the requirements outlined in the following FAQ: What are the requirements for operating SIMATIC WinCC in a Windows network? - ID: 868014 - Industry Support Siemens Also, make sure your SIMATIC NET version is compatible with your WinCC version. You can use this link: Compatibility Tool BR Cookie_M0nster
	If this information has been helpful to you, please don't forget to rate it. 🍪🍪🍪🍪🍪
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4/8/2025 10:18 AM	Rate (0)
Carmendomar_95 Joined: 4/4/2025 Last visit: 4/8/2025 Posts: 3 Rating: (0)	Hi! I solve the problem! On TIA 18 is check default the "Use only security communication with PG/PC HMI" but on Wincc 7.4 SP1 when you import the .zip from the PLC didn't upload the security certificate. I just uncheck this kind of security and everything works well. Thank you! Attachment Check.PNG (152 Downloads)

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