Table 505:CHNGLCK Output signalsName Type DescriptionACTIVE BOOLEAN Change lock activeOVERRIDE BOOLEAN Change lock override15.5.5 SettingsThe function does not have any parameters available in Local HMI or Protection andControl IED Manager (PCM600)15.5.6 Operation principleThe Change lock function (CHNGLCK) is configured using ACT.The function, when activated, will still allow the following changes of the IED statethat does not involve reconfiguring of the IED:• Monitoring• Reading events• Resetting events• Reading disturbance data• Clear disturbances• Reset LEDs• Reset counters and other runtime component states• Control operations• Set system time• Enter and exit from test mode• Change of active setting groupThe binary input signal LOCK controlling the function is defined in ACT or SMT:Binary input Function1 Activated0 Deactivated15.6 IED identifiers TERMINALID15.6.1 IdentificationFunction description IEC 61850identificationIEC 60617identificationANSI/IEEE C37.2device numberIED identifiers TERMINALID - -Section 15 1MRK 511 287-UEN ABasic IED functions564Technical manual