Siemens SINUMERIK 808D ADVANCED Parameter Manual page 370

Detailed descriptions of interface signals
5.5 NCK signals
Signal state 0 or edge
change 1 → 0
Note for the reader
DB2700
DBX2.6
Edge evaluation: No
Signal state 1 or edge
change 0 → 1
Signal state 0 or edge
change 1 → 0
corresponding to ...
Note for the reader
DB2700
DBX2.7
Edge evaluation: No
Signal state 1 or edge
change 0 → 1
Signal state 0 or edge
change 1 → 0
Note for the reader
DB2700
DBX3.0
Edge evaluation: No
370
The CPU is not ready.
Function Manual Basic Functions G2
Drive ready
Signal(s) from NC (NCK → PLC)
Signal(s) updated: Cyclic
All existing drives signal the status drive ready (summary of axial interface
signals "DRIVE ready").
As soon as the drive not ready status is signaled from a drive (i.e. IS "DRIVE
ready" = 0).
DB390x DBX4001.5 (DRIVE ready)
Function Manual Basic Functions G2
NC ready
Signal(s) from NC (NCK → PLC)
Signal(s) updated: Cyclic
The control system is ready.
This interface signal is an image of the relay contact "NC Ready".
This signal is set if:
● Relay contact "NC Ready" is closed
● All the voltages in the control have been established
● The control is in the cyclic mode
The control is not ready. The relay contact "NC Ready" is open.
The following faults will cause NC Ready to be canceled:
● Undervoltage and overvoltage monitoring function has responded
● Individual components are not ready (NCK CPU Ready)
● NC CPU watchdog
If the signal "NC Ready" goes to 0 the following measures are introduced by
the control if they are still possible:
● The controller enable signals are withdrawn (this stops the drives)
● The following measures are introduced by the PLC basic program:
– Status signals from NCK to PLC (user interface) are deleted (cleared)
– Change signals for auxiliary functions are deleted
– Cyclic processing of the user interface is exited
The control is not ready again until after POWER ON.
Function Manual Basic Functions G2
NCK alarm is active
Signal(s) from NC (NCK → PLC)
Signal(s) updated: Cyclic
Parameter Manual, 08/2015, 6FC5397-8EP40-0BA1
Parameter Manual