Signals To/From The Operator Panel Front - Siemens SINUMERIK 840D sl Function Manual

A2: Various NC/PLC interface signals and functions
2.2 NC/PLC interface signals - only 840D sl
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 channel-specific interface can be
scanned to see which channels are involved and whether this will cause a processing stop.
DB21, ... DBX36.6 (channel-specific NCK alarm pending)
The NC sends this signal to the PLC to indicate that at least one NC alarm is pending for the
relevant channel (see also DB21, ... DBX36.7).
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.
2.2.4

Signals to/from the operator panel front

DB19 DBX0.0 (screen bright)
The screen blanking is disabled.
DB19 DBX0.1 (screen dark)
The operator panel screen is darkened.
If the interface signal is used to actively darken the screen:
● It is no longer possible to switch the screen bright again on the keyboard (see below).
● The first keystroke on the operator panel front already triggers an operator action.
Note
In order to prevent accidental operator actions when the screen is darkened via the interface
signal, we recommend disabling the keyboard at the same time.
DB19 DBX0.1 = 1 AND DB19 DBX0.2 = 1 (key disable)
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Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions