GE Multilin L60 Line Phase Comparison System D-7APPENDIX D D.1 PROTOCOLDSpontaneous Transmission: Spontaneous transmissionDouble transmission of information objects with cause of transmission spontaneous:The following type identifications may be transmitted in succession caused by a single status change of an informationobject. The particular information object addresses for which double transmission is enabled are defined in a project-specific list. Single point information: M_SP_NA_1, M_SP_TA_1, M_SP_TB_1, and M_PS_NA_1 Double point information: M_DP_NA_1, M_DP_TA_1, and M_DP_TB_1 Step position information: M_ST_NA_1, M_ST_TA_1, and M_ST_TB_1 Bitstring of 32 bits: M_BO_NA_1, M_BO_TA_1, and M_BO_TB_1 (if defined for a specific project) Measured value, normalized value: M_ME_NA_1, M_ME_TA_1, M_ME_ND_1, and M_ME_TD_1 Measured value, scaled value: M_ME_NB_1, M_ME_TB_1, and M_ME_TE_1 Measured value, short floating point number: M_ME_NC_1, M_ME_TC_1, and M_ME_TF_1Station interrogation:Clock synchronization: Clock synchronization (optional, see Clause 7.6)Command transmission: Direct command transmission Direct setpoint command transmission Select and execute command Select and execute setpoint command C_SE ACTTERM used No additional definition Short pulse duration (duration determined by a system parameter in the outstation) Long pulse duration (duration determined by a system parameter in the outstation) Persistent output Supervision of maximum delay in command direction of commands and setpoint commandsMaximum allowable delay of commands and setpoint commands: 10 sTransmission of integrated totals: Mode A: Local freeze with spontaneous transmission Mode B: Local freeze with counter interrogation Mode C: Freeze and transmit by counter-interrogation commands Mode D: Freeze by counter-interrogation command, frozen values reported simultaneously Counter read Counter freeze without reset Global Group 1 Group 5 Group 9 Group 13 Group 2 Group 6 Group 10 Group 14 Group 3 Group 7 Group 11 Group 15 Group 4 Group 8 Group 12 Group 16
