how should i go online with ci 801/CI854 using profibus connector
Voted best answer
On the connectivity server open windows explorer and enter the IP address of your AC800M controller to open the Service Diagnostics for CI modules.
The default username/password is service/ac800m
More information is in the AC800M Profibus DP configuration manual
This is quite a basic troubleshooting tool. More detailed diagnostics of bus faults, cabling issues, slave communications etc may require third party profibus analyser tools