Siemens SINUMERIK 840D sl Function Manual page 16

Detailed description
2.1 NC/PLC interface signals
2.1.3 Alarm signals to PLC
DB10 DBX103.0 (HMI Alarm pending)
The HMI component signals that at least one HMI alarm is pending.
DB10 DBX109.6 (ambient temperature alarm)
The ambient temperature or fan monitoring function has responded.
DB10 DBX109.7 (NCK battery alarm)
The battery voltage has dropped below the lower limit value. The control can still be
operated. A control system shutdown or failure of the supply voltage will lead to loss of data.
DB10 DBX109.0 (NCK alarm pending)
The NC signals that at least one NC alarm is pending. The channelspecific interface can be
scanned to see which channels are involved and whether this will cause a processing stop.
DB21, ... DBX36.6 (channelspecific NCK alarm pending)
The NC sends this signal to the PLC to indicate that at least one NC alarm is pending for the
affected channel. See also:
DB21, ... DBX36.7 (NCK alarm with processing stop present)
DB21, ... DBX36.7 (NCK alarm with processing stop present)
The NC sends this signal to the PLC to indicate that at least one NCK alarm, which has
interrupted or aborted the current program run (processing stop), is pending for the affected
channel.
2.1.4 SINUMERIK 840Di-specific interface signals
For a detailed description of the SINUMERIK 840Di-specific interface signals, please refer
to:
Reference
/HBI/ SINUMERIK 840Di Manual
10
Basic logic functions: Various NC/PLC interface signals and functions (A2)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0