Wincc 75 Sp2 Compatibility List Best ((new)) Access
I understand you're looking for the WinCC V7.5 SP2 compatibility list (likely "best" meaning most reliable or complete), and you want to develop a feature related to it. Let me clarify:
Feature Development Idea: "WinCC Compatibility Checker"
If you want to develop a feature (e.g., a tool/script/web app) to help users validate compatibility, here’s a structured feature design: wincc 75 sp2 compatibility list best
Automation Controllers (PLC)
| PLC Family | Required Driver Channel | Max. Connections (Best Practice) |
| :--- | :--- | :--- |
| S7-1500 (FW 2.9+) | SIMATIC S7-1500 Channel (native TCP/IP) | 64 |
| S7-1200 (FW 4.5) | S7-1200 Channel | 32 |
| S7-300/400 | SIMATIC S7 Protocol Suite > TCP/IP | 128 |
| Legacy S5 | SIMATIC S5 - 3964R or TF (via CP 5611) | 8 | I understand you're looking for the WinCC V7
The Nervous System: Communication and Drivers
A SCADA system that cannot talk to the PLC is just a pretty slideshow. The compatibility list dedicates significant space to SIMATIC NET and channel drivers. For WinCC 7.5 SP2, the best-in-class configuration involves ensuring that the Industrial Ethernet (IE) driver version matches the firmware of your Siemens controllers (S7-1200/1500). S7-PLCSIM: If you are using WinCC 7
Crucially, the list clarifies which versions of OPC UA are supported. WinCC 7.5 SP2 introduced enhanced OPC UA client functionality, but it requires a specific patch level. The compatibility list shows that while basic OPC DA is supported, OPC UA certificates require Windows Server 2019’s specific security protocols. Ignoring this leads to "Certificate Untrusted" errors that halt data flow.
Furthermore, for users connecting to third-party PLCs (Rockwell, Modbus, etc.), the list identifies which Communications Channel DLLs are validated. A "best" practice is to avoid using generic TCP/IP sockets; instead, use the certified SIMATIC OPC Server listed in the compatibility matrix.
4. Communication Drivers and Add-ons
Compatibility isn't just about the OS; it's about talking to your PLCs.
- S7-PLCSIM: If you are using WinCC 7.5 SP2 for testing with a PLC Simulator, ensure you are using PLCSIM V16 or V17 for the best integration, though older V15 versions often work.
- Channel Drivers: The standard drivers (SIMATIC S7 Protocol Suite) are included and generally backward compatible. However, if you are using OPC UA, ensure your certificates are managed correctly, as SP2 tightened security protocols for OPC communication.