Siemens SINUMERIK 840D sl Function Manual page 1017
Extended functions
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DB19 DBB124
OFFL_REQ_PLC (1)
OFFL_CONF_PLC (2)
OFFL_REQ_OP (3)
OFFL_CONF_OP (4)
S_ACT (6)
OFFL_REQ_FOC (7)
OFFL_CONF_FOC (8)
ONL_REQ_FOC (9)
ONL_PERM_FOC (10)
DB19 DBB125
DISC_FOC (9)
OK (10)
CONNECT (11)
PLC_LOCKED (14)
PRIO_H (15)
Extended Functions
Function Manual, 01/2008, 6FC5397-1BP10-3BA0
19.2 Several Operator Panels on Several NCUs, Distributed Systems
MMC1_STATUS
Requests from online HMI to PLC or vice-versa. The meaning of the signal is
dependent on MMC1_Z_INFO
PLC to HMI: PLC wants to displace control unit by offline request.
HMI to PLC: Acknowledgement of OFFL_REQ_PLC
HMI to PLC: Control unit would like to go offline from this NCU and outputs an
offline request
PLC to HMI: Acknowledgement of OFFL_REQ_OP
HMI to PLC: Control unit goes online or changes operating focus
HMI to PLC: Control unit would like to take operating focus away from this NCU
PLC to HMI: Acknowledgement of OFFL_REQ_FOC
HMI to PLC: Control unit would like to set operating focus to this NCU
PLC to HMI: Acknowledgement of ONL_REQ_FOC
MMC1_Z_INFO
Request from online HMI to PLC or vice-versa. The meaning of the signal is
dependent on MMC1_STATUS
Control unit switches operating focus to another NCU.
Positive acknowledgement
Control unit has gone online on this NCU.
The control unit switchover disable is set in the HMI-PLC interface. Control unit
cannot go offline from this NCU or change operating focus.
Control units with a higher priority are operating on this NCU. Requesting control
unit cannot go online to this NCU
NC/PLC interface signals (Z2)
1017
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- Preface
- Digital and Analog Nck I/Os (A4)
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