Siemens SINUMERIK 840D sl Function Manual

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1. HMI/PLC online interfaceDB19 DBW120 MMC1_CLIENT_IDENTrefer to PAR_CLIENT_IDENTafter issuing positive online permission, the PLC transfers the HMI parameters tothe online interface PAR_CLIENT_IDENT -> MMC1_CLIENT_IDENTDB19 DBB122 MMC1_TYPrefer to PAR_MMC_TYPAfter issuing positive online permission, the PLC transfers the HMI parameters tothe online interface PAR_MMC_TYP -> MMC1_TYPDB19 DBB123 MMC1_MSTT_ADRrefer to PAR_ MSTT_ADRAfter issuing positive online permission, the PLC transfers the HMI parameters tothe online interface PAR_ MSTT_ADR -> MMC1_MSTT_ADRDB19 DBB124 MMC1_STATUSRequests from online HMI to PLC or vice-versa. The meaning of the signal isdependent on MMC1_Z_INFOOFFL_REQ_PLC (1) PLC to HMI: PLC wants to displace control unit by offline request.OFFL_CONF_PLC (2) HMI to PLC: Acknowledgement of OFFL_REQ_PLCOFFL_REQ_OP (3) HMI to PLC: Control unit would like to go offline from this NCU and outputs anoffline requestOFFL_CONF_OP (4) PLC to HMI: Acknowledgement of OFFL_REQ_OPS_ACT (6) HMI to PLC: Control unit goes online or changes operating focusOFFL_REQ_FOC (7) HMI to PLC: Control unit would like to take operating focus away from this NCUOFFL_CONF_FOC (8) PLC to HMI: Acknowledgement of OFFL_REQ_FOCONL_REQ_FOC (9) HMI to PLC: Control unit would like to set operating focus to this NCUONL_PERM_FOC (10) PLC to HMI: Acknowledgement of ONL_REQ_FOCDB19 DBB125 MMC1_Z_INFORequest from online HMI to PLC or vice-versa. The meaning of the signal is de‐pendent on MMC1_STATUSDISC_FOC (9) Control unit switches operating focus to another NCU.OK (10) Positive acknowledgementCONNECT (11) Control unit has gone online on this NCU.PLC_LOCKED (14) The control unit switchover disable is set in the HMI-PLC interface. Control unitcannot go offline from this NCU or change operating focus.PRIO_H (15) Control units with a higher priority are operating on this NCU. Requesting controlunit cannot go online to this NCUZ2: NC/PLC interface signals19.2 Distributed systems (B3)Extended FunctionsFunction Manual, 10/2015, 6FC5397-1BP40-5BA3 891