Siemens SINUMERIK 840D sl Function Manual page 1099

DB21, ...
DBX3.4
Edge evaluation:
Signal state 1 or The NC reacts to this signal by initiating an immediate movement stop. An alarm is output if any
edge change 0 → 1 other movement or action needs to be interrupted as a result of this signal.
In physical terms, the signal is identical to the signal "Stroke active" for the CNC, i.e. the system is
wired in such a way that the two signals are taken to the same NC input via an AND gate.
1 signal: Stroke inoperative (corresponds to the signal "stroke enable").
Signal state 0 or 0 signal: Stroke operative (corresponds to the signal "stroke enable").
edge change 1 → 0
DB21, ...
DBX3.5
Edge evaluation:
Signal state 1 or The signal "manual stroke initiation" allows the operator to initiate a punching process, even when
edge change 0 → 1 the part program is not being processed. Thus the initiation of the punching process is controlled
from the PLC.
Successful stroke initiation is indicated to the PLC by the NCK-PLC interface signal:
DB21, ... DBX38.1 (Manual stroke initiation acknowledgement).
1 signal: Manual stroke initiation is active.
Signal state 0 or 0 signal: Manual stroke initiation is not active.
edge change 1 → 0
Extended Functions
Function Manual, 03/2009, 6FC5397-1BP10-4BA0
Stroke inoperative
Signal(s) updated:
Manual stroke initiation
Signal(s) updated:
NC/PLC Interface Signals (Z2)
Punching and nibbling
1099