CP 443-1 Advanced (GX30) 
Manual, 03/2019, C79000-G8976-C256-05 
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Online security diagnostics via port 443 
Security diagnostics via port 443 
Requirement: Access to the Web server of the CP is activated via HTTPS. 
If you want to perform security diagnostics in STEP 7 Professional, follow the steps below: 
1.  Select the CP in STEP 7. 
2.  Open the "Online & Diagnostics" shortcut menu. 
3.  In the "Security" parameter group, click the "Connect online" button. 
In this way, you perform the security diagnostics via port 443. 
 
Diagnostics options 
Overview of the Diagnostics options 
The following diagnostics options are available: 
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For information on the LED displays, refer to the section LEDs (Page 49). 
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For information on Web diagnostics using HTTP, refer to the section The CP as Web 
server (Page 96). 
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–  Hardware diagnostics and troubleshooting 
–  Communication diagnostics with special diagnostics