Punching And Nibbling; Activation, Deactivation; Punching And Nibbling On Or Off (Spof, Son, Pon, Sons, Pons, Pdelayon, Pdelayof, Punchacc) - Siemens Sinumerik 840D sl Programming Manual

Punching and nibbling

12.1

Activation, deactivation

12.1.1 Punching and nibbling on or off (SPOF, SON, PON, SONS, PONS, PDELAYON,
PDELAYOF, PUNCHACC)
Function
Activate/deactivate punching and nibbling
PON and SON are used to activate the punching and nibble functions. SPOF terminates all
punching- and nibble-specific functions. Modal commands PON and SON are mutually
exclusive, i.e., PONdeactivates SONand vice versa.
Punching/nibbling with leader
The functions SONS and PONS also switch-in the punching or nibbling functions.
Unlike SON/PON (stroke control at interpolation level), with these functions, signal-related
control of stroke initiation is at servo level. This enables higher stroke frequencies and, as a
result, increased punching capacity to be achieved.
While signals are being evaluated in the leader, all functions that cause the nibbling or
punching axes to change position (e.g. handwheel travel, changes to frames via PLC,
measurement functions) are inhibited.
Punching with delay
PDELAYON results in a delayed output of the punching stroke. The modally effective
command has a preparatory function and therefore is generally located before PON. Normal
punching resumes after PDELAYOF.
Note
The delay time is set in setting data SD42400 $SC_PUNCH_DWELLTIME.
Travel-dependent acceleration
PUNCHACC can be used to specify an acceleration characteristic defining different rates of
acceleration dependent on the hole spacing.
Second punching interface
Machines which need to use a second punching interface (second punching unit or
comparable medium) alternately can be switched over to a second pair of fast digital inputs
and outputs on the control (I/O pair). Full punching/nibbling functionality is available on both
interfaces. The SPIF1 and SPIF2 commands are used to switch over between the first and
second punching interface.
Job planning
Programming Manual 02/2011, 6FC5398-2BP40-1BA0
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