10.4.6.5 SignalsTable 207:ABC_BC Input signalsName Type Default DescriptionQA1_OP BOOLEAN 0 QA1 is in open positionQA1_CL BOOLEAN 0 QA1 is in closed positionQB1_OP BOOLEAN 0 QB1 is in open positionQB1_CL BOOLEAN 0 QB1 is in closed positionQB2_OP BOOLEAN 0 QB2 is in open positionQB2_CL BOOLEAN 0 QB2 is in closed positionQB7_OP BOOLEAN 0 QB7 is in open positionQB7_CL BOOLEAN 0 QB7 is in closed positionQB20_OP BOOLEAN 0 QB20 is in open positionQB20_CL BOOLEAN 0 QB20 is in closed positionQC1_OP BOOLEAN 0 QC1 is in open positionQC1_CL BOOLEAN 0 QC1 is in closed positionQC2_OP BOOLEAN 0 QC2 is in open positionQC2_CL BOOLEAN 0 QC2 is in closed positionQC11_OP BOOLEAN 0 Earthing switch QC11 on busbar WA1 is in openpositionQC11_CL BOOLEAN 0 Earthing switch QC11 on busbar WA1 is in closedpositionQC21_OP BOOLEAN 0 Earthing switch QC21 on busbar WA2 is in openpositionQC21_CL BOOLEAN 0 Earthing switch QC21 on busbar WA2 is in closedpositionQC71_OP BOOLEAN 0 Earthing switch QC71 on busbar WA7 is in openpositionQC71_CL BOOLEAN 0 Earthing switch QC71 on busbar WA7 is in closedpositionBBTR_OP BOOLEAN 0 No busbar transfer is in progressBC_12_CL BOOLEAN 0 Bus coupler connection exists between busbarWA1 and WA2VP_BBTR BOOLEAN 0 Status are valid for apparatuses involved in thebusbar transferVP_BC_12 BOOLEAN 0 Status of the bus coupler apparatuses betweenWA1 and WA2 are validEXDU_ES BOOLEAN 0 No transmission error from any bay containingearthing switchesEXDU_12 BOOLEAN 0 No transmission error from any bay connected toWA1/WA2 busbarsEXDU_BC BOOLEAN 0 No transmission error from any other bus couplerbayQA1O_EX1 BOOLEAN 0 External open condition for apparatus QA1QA1O_EX2 BOOLEAN 0 External open condition for apparatus QA1Table continues on next pageSection 10 1MRK 511 287-UEN AControl278Technical manual