Siemens SINUMERIK 840D sl Function Manual page 1056
Extended functions
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NC/PLC interface signals (Z2)
19.10 Punching and nibbling
DB21, ...
DBX3.2
Edge evaluation:
Signal state 1 or
This signal simply prevents execution of the stroke. The machine traverses anyway.
edge change 0 → 1
The automatic path segmentation remains active if it is already activated.
Only the signal "Stroke initiation" is suppressed.
The machine traverses in "stop and go" mode.
The step length is defined via the path segmentation.
1 signal: Stroke suppression is active.
Signal state 0 or
0 signal: Stroke suppression is not active.
edge change 1 → 0
DB21, ...
DBX3.3
Edge evaluation:
Signal state 1 or
A "Delayed stroke" can be activated via this signal. This corresponds in function to the
edge change 0 → 1
programming of PDELAYON. Other PLC signals not corresponding to the standard are not evaluated
in the NCK. With the exception of the manual stroke initiation, the evaluation of signals is limited to
PON active.
1 signal: Delayed stroke is active.
Signal state 0 or
0 signal: Delayed stroke is not active.
edge change 1 → 0
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 parts 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
1056
Stroke suppression
Signal(s) updated:
Delayed stroke
Signal(s) updated:
Stroke inoperative
Signal(s) updated:
Manual stroke initiation
Signal(s) updated:
Function Manual, 01/2008, 6FC5397-1BP10-3BA0
Extended Functions
- Quick Links:
- Preface
- Digital and Analog Nck I/Os (A4)
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