Plc Signals Specific To Punching And Nibbling; Punching And Nibbling-Specific Reactions To Standard Plc Signals - Siemens SINUMERIK 840D sl Function Manual

Punching and Nibbling (N4)
10.2 Stroke control
10.2.5

PLC signals specific to punching and nibbling

Function
In addition to the signals used for direct stroke control, channel-specific PLC interface
signals are also available. These are used both to control the punching process and to
display operational states.
Signals
Signal
DB21, ... DBX3.0 (no stroke enable)
DB21, ... DBX3.2 (stroke suppression)
DB21, ... DBX3.4 (delayed stroke)
DB21, ... DBX3.1 (manual stroke
suppression)
10.2.6

Punching and nibbling-specific reactions to standard PLC signals

DB21, ... DBX12.3 (feed stop)
With interface signal:
DB21, ... DBX12.3 (feed stop),
the NC reacts in the following way with respect to the stroke control:
Signal is detected in advance of
instant t
Signal is detected at instant t
714
:
1
:
1
Activation
Prevents the NC from initiating a punching operation.
The NC waits until the enable signal is available
before continuing the part program.
Allows the part program to be processed without
initiating a punching operation (dry run).
With active path segmentation, the axes traverse in
"Stop and go" mode.
Activates delayed stroke output if permitted by
PDELAYON.
Enables the operator to initiate a punching operation
(controlled via the PLC) without executing the part
program.
Manual stroke initiation is acknowledged with signal:
DB21, .. DBX38.1 (acknowledgement of manual
stroke initiation)
Stroke initiation is suppressed.
The next stroke is not initiated until the next start or until
the "Feed stop" signal has been canceled.
Machining is then continued as if there had been no
interruption.
The current stroke is executed to completion.
The NC then dwells in the state characterized by t
To allow it to respond in this manner, time monitoring of
the "Stroke active" and "Stroke initiation" signals is
dispensed with.
Function Manual, 01/2008, 6FC5397-1BP10-3BA0
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4
Extended Functions