Requirements and installation
Requirements
Note: 
        When using Common Name Service (CNS) within the panel topology, the
                config entry [event] refuseCNS must
                be set to 0.
Installation
- 
                    
Panel topology/Group alert facility is part of the base installation of WinCC OA.
 
CAUTION: 
         If you have to make updates after generating the panel topology
                sum alerts, create a library which implements the function
                    
HOOK_pt_generateSumAlerts(firstNr, toEnd, startFromPanel, errors,
                    iNotOwnSystem); If no other actions should be executed in the function,
                the function must not be changed but only called in the library.