Signals From Channel (Db21 - Siemens SINUMERIK 840D sl Function Manual
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Detailed Description
2.1 Various interface signals and functions (A2)
2.1.7
Signals from channel (DB21, ...)
DB21, ...
DBX36.6
Channelspecific NCK alarm is active
Edge evaluation: no
Signal state 1 or
At least one NCK alarm is present for this channel.
edge change 0 → 1
This means that the group interface signal is also set
DB10 DBX103.0
(NCK alarm is present).
The PLC user program can interrogate whether processing for the channel in question has been
interrupted because of an NCK channel:
DB21, ... DBX36.7 (NCK alarm with processing stop present).
Signal state 0 or
No NCK alarm is active for this channel.
edge change 1 → 0
Corresponding to ....
DB21, ... DBX36.6 (NCK alarm with processing stop present)
DB10 DBX103.0 (NCK alarm present)
Additional references /DA/ Diagnostics Guide
DB21, ...
DBX36.7
NCK alarm with processing stop present
Edge evaluation: no
Signal state 1 or
At least one NCK alarm - which is causing a processing stop of the part program running in this
edge change 0 → 1
channel - is active.
Signal state 0 or
There is no alarm active in this channel that is causing a processing stop.
edge change 1 → 0
Application
With this alarm a program interruption because of an NCK alarm can be recognized immediately by
example(s)
the PLC user program and the necessary steps introduced.
Corresponding to ....
DB21, ... DBX36.6 (channel-specific NCK alarm is present)
Additional references /DA/ Diagnostics Guide
DB21, ...
DBX318.7
Overstore active
Edge evaluation: no
Signal state 1 or
The overstore function is enabled (with the channel-specific PI service "_N_OST_ON"). If the PI
edge change 0 → 1
service is denied, the signal will not change.
Signal state 0 or
The overstore function is disabled (with the channelspecific PI service "_N_OST_OFF"). If the PI
edge change 1 → 0
service is denied, the signal will not change.
28
Signal(s) updated: cyclic
Signal(s) updated: cyclic
Signal(s) updated: cyclic
Basic logic functions: NC/PLC interface signals (Z1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
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