Diagnostics and upkeep   
7.3 The CP as Web server 
  CP 443-1 Advanced (GX30) 
96  Manual, 03/2019, C79000-G8976-C256-05 
● 
 
In the "Diagnostics" tab in the Inspector window, you will see the following information: 
–  Entries in the diagnostics buffer of the CPU 
–  Information on the online status 
In the "Online > Online and diagnostics" menu, you obtain the static information about the 
module: 
–  General information on the module 
–  Diagnostics status 
–  Information on the interfaces 
–  Information relating to special diagnostics (folder "Functions" > Special diagnostics) 
You will find further information on the diagnostics functions of STEP 7 in the STEP 7 
information system. 
● 
Security-Online diagnostics
 
Using this special diagnostics that can be called up from SCT or STEP 7, you will obtain 
detailed information about the Security functions of the CP., 
Using the CP as an intermediary for diagnostics data 
If you only want to use the CP as an intermediary for diagnostics data of the station, as of 
firmware version 3.2 you can network only the gigabit interface and, for example, establish a 
VPN tunnel to a PC via this interface. The PROFINET interface does not need to be 
networked. 
 
The CP provides you with the functionality of a web server for access by means of a web 
browser. 
 
Note 
Please note the following special features when using IT functions: 
The data exchange for productive communication (S7 connections + SEND/RECEIVE 
connections + PROFINET IO) always has a higher priority than data exchange with the Web 
browser. This can lead to delays in the HTML 
process control in the Web browser. 
When shipped, the file system of the CP contains S7 beans and further information. 
S7 applets are Java applets specially written for SIMATIC S7 and that are used to allow write 
or read access to the S7CPU. You can develop your own S7 applets with the supplied S7 
beans and tailor them to your requirements. For information on this, refer to the manual /5/ 
(Page 118).