text: <s>[INST] Poweflex 525 online changes Hello , Is it possible change parameters in online mode when connected to online plc station ,while drives are running , without inerrupting them ? If yes will setting be saved in drive if power loss would occured ? or it should be done offline? parmeter c121 comm write mode is set as default - Save on this setting parameter change should be written to eeprom right?, i have read also attention that repeated write of parameters can damage eeprom ,but if it is changed once it should be ok right? [/INST] Fitz The AOP is software that is installed on your PC... The AOP communicates directly with the online drive and/or it can save data to the offline project (on your PC). Most the the parameters can be changed while online with the drive (assuming the drive is not running the motor). Some parameter cannot be modified while the motor is running. When C121 = 0, the parameters are saved, they are saved to EEPROM. \\n </s>