10.2 Level Operation DiagramLevel 3(Input Level)press SET + key 3secondspress SET keypress SET + key3 seconds 3 secondsPower ON Level 1(User Level)press SET key3 seconds Level 2(PID Level)press SET keyLCK = 1111, press SET + key3 seconds 3 secondsLevel 4press SET + key (SET Level)3 seconds※ : If no key is pressed within 60 seconds, it will automatically return to LEVEL 1 (user level) and display PV/SV.10.3 Data Lock FunctionLCK provides a parameter protection function to prevent the first line operator from touching or modifying important parameters.Conversely, when the parameter cannot be modified, please make sure that the set value of LCK.LCKLEVELDescriptionsLevel_1 Level_2 Level_3 Level_4USER Level PID Level INPUT Level SET Level0000 ◎ ◎ ◎ X All parameters of Level 1, 2 & 3 are able to be modified(Factory default setting)1111 ◎ ◎ X ◎ All parameters of Level 1, 2 & 4 are able to be modified0100 ◎ ◎ X X All parameters of Level 1, 2 are able to be modified0110 ◎ ◎ X X Only parameters of Level 1 and LCK can be modified0001 ◎ ◎ X X Only SV, LCK can be modified0101 ◎ ◎ X X Only LCK can be modifiedOther ◎ ◎ ◎ X Once jumping to other levels, LCK will be automaticallyrestored to 0000◎: able to enter X: unable to enterFY/FU operation manual 20