ATV320 Modbus communication or serial communication parameter write issue?

[Sattu_98]

I am using ATV320 drive and using on terminal mode operation. I am changing  the parameter through Modbus poll or Modbus scan software. I am changing the values of parameter through software(Modpoll or Mod scan), we are able to see changes in drive, but when I do power cycle (Turn drive off and on) then value are getting changed in drive, it will retain its original value it will not show the changed values. What can be the reason of this? 

Below are the parameter I am trying to change through Modbus poll or Modbus scan.

Sr no	LAC	Address	Label	Default
1	FRS	9602	Nominal motor Frequency	50Hz
2	ACC	9001	Acceleration ramp time	3s
3	LSP	3105	Low speed	0 Hz
4	HSP	3104	High speed	50 Hz
5	CRL3	4434	AI3 Current Scaling parameter of 0%	0 mA
6	R2	5002	R2 assignment	Not assigned
7	AO1	5021	AQ1 Assigment	Not Configured
8	AOL1	4641	AQ1 min Output value	0 mA
9	RSF	7124	Fault reset input assigment	Not assigned
10	R1	5001	R1 Assignment	Device Running

[Bastian_Schmitz]

you need to write the values to eeprom