Siemens SINUMERIK Series Function Manual page 848

Z2: NC/PLC interface signals
18.2 Distributed systems (B3)
STATUS and Z_INFO can be combined as follows
Name: Status
OFFL_REQ_PLC
OFFL_CONF_PLC
OFFL_CONF_PLC
OFFL_REQ_OP
OFFL_CONF_OP
OFFL_CONF_OP
ONL_PERM
ONL_PERM
ONL_PERM
ONL_PERM
S_ACT
S_ACT
OFFL_REQ_FOC
OFFL_CONF_FOC
OFFL_CONF_FOC
848
Z_INFO
Set
Set
MMC_LOCKED
Set
Set
PLC_LOCKED
No. of HMI-PLC online
interface,
OK
MMC_LOCKED
PLC_LOCKED
PRIO_H
CONNECT
DISC_FOCUS
Set
Set
PLC_LOCKED
Meaning
PLC wants to displace online control unit by offline request.
Control unit positively acknowledges the offline request from PLC.
Control unit will subsequently go offline.
Control unit negatively acknowledges the offline request.
Control unit will not go offline, as processes are running that must
not be interrupted.
Control unit would like to go offline from the online NCU and outputs
an offline request.
PLC positively acknowledges the offline request.
Control unit will subsequently go offline from this NCU.
PLC negatively acknowledges the offline request from control unit.
User has set the HMI switchover disable, control unit cannot go
offline, MMCx_SHIFT_LOCK = TRUE, x=1 or 2, 1st or 2nd HMI-PLC
interface.
PLC issues the online enabling command to the requesting control
unit. Control unit can then go online to this NCU. Content of Z_INFO:
Bit 0 ..3: Set
Bit 4... 7: No. of HMI-PLC online interface with which the control unit
should connect:
First HMI-PLC online interface
Second HMI-PLC online interface
The requesting control unit cannot go online.
Two control units on which uninterruptible processes are in progress
are connected online to this NCU. The PLC cannot suppress either
of the two control units.
The requesting control unit cannot go online.
User has set HMI switchover disable, MMCx_SHIFT_LOCK = TRUE,
x=1 or 2, first or second HMI online interface.
The requesting control unit cannot go online.
Two control units that are both higher priority than the requesting
control unit are connected online to the NCU.
The PLC cannot suppress either of the two control units.
The requesting control unit has gone online.
The PLC now activates HMI sign-of-life monitoring.
Server HMI has disconnected the operating focus from this NCU.
Server HMI would like to disconnect the operating focus from this
NCU and outputs an offline focus request.
PLC positively acknowledges the offline focus request.
Server HMI can disconnect operating focus.
PLC negatively acknowledges the online focus request.
User has set HMI switchover disable, server HMI cannot disconnect
operating focus, MMCx_SHIFT_LOCK = TRUE,
x=1 or 2, first or second HMI-PLC interface.
Function Manual, 03/2013, 6FC5397-1BP40-3BA1
Extended Functions