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05.91
15 Communication Area/PLC Interface (DB 48)
15.1 Signals to communication area
•
The control can be switched on/off only if it was started up with an operator panel.
•
Disconnecting operator panel during NC operation:
Subject to the condition that the NC/PLC has already been started up with the operator
panel and that the PLC function CONTROL WITHOUT OPERATOR PANEL (NC/PLC
interface signal) was selected before switching off.
Switch off the operator panel and pull out the MPC connector at the operator panel.
•
Connecting operator panel during NC operation:
Same preconditions apply as for "disconnecting" except that the operator panel must be
connected to the MPC system while switched off. When the operator panel is then
switched on, the CONTROL WITHOUT OPERATOR PANEL interface signal is cancelled
by the PLC.
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WARM RESTART
DW 0, bit 8
1 signal:
Activates a warm restart of the NC.
0 signal:
No effect.
Notes on application:
If any of the following are altered during machine operation:
•
channel allocation to a mode group
•
axis allocation to a mode group
•
spindle allocation a to mode group
an NC warm restart has to be initiated after overwriting the machine data. Following the warm
restart, the changes take effect on the NC and can be accessed by the program.
Notes:
•
A warm restart is activated only if the NC is in the reset state.
•
No NC start signal may be given in any NC channel during a warm restart.
•
Neither the axis and spindle-specific NC/PLC interfaces nor the NC/PLC interface for
EMERGENCY STOP signals are processed while the function is being executed.
•
Position control of the axes remains operative during the warm restart.
•
The "M 19 active" spindle position control is cancelled.
•
If the function is requested again during the warm restart, the request is ignored.
Moreover, it is not activated after the current function has been completed.
•
All spindles must be stationary before the warm restart.
©
Siemens AG 1991 All Rights Reserved 6ZB5 410-0HE02
15–3
SINUMERIK 880 (PJ)