tool PCM600. The inputs Qx_EXy on the interlocking modules are used to add thesespecific conditions.The input signals EXDU_xx shall be set to true if there is no transmission error at thetransfer of information from other bays. Required signals with designations ending inTR are intended for transfer to other bays.12.4 Logic rotating switch for function selection and LHMIpresentation SLGGIO12.4.1 IdentificationFunction description IEC 61850identificationIEC 60617identificationANSI/IEEE C37.2device numberLogic rotating switch for functionselection and LHMI presentationSLGGIO - -12.4.2 FunctionalityThe logic rotating switch for function selection and LHMI presentation SLGGIO (orthe selector switch function block) is used to get an enhanced selector switchfunctionality compared to the one provided by a hardware selector switch. Hardwareselector switches are used extensively by utilities, in order to have different functionsoperating on pre-set values. Hardware switches are however sources for maintenanceissues, lower system reliability and an extended purchase portfolio. The logic selectorswitches eliminate all these problems.Section 12 1MRK 502 048-UEN AControl414Technical manual
