Siemens SINUMERIK 840D sl Function Manual page 510

Detailed description
2.1 Predefined auxiliary functions
Bit6: Output during motion
The auxiliary function is output during the traverse movements programmed in the part
program block (path and/or block-related positioning axis movements).
Bit7: Output at block end
The auxiliary function is output after completion of the traverse movements programmed in
the part program block (path and/or block-related positioning axis movements).
Bit8: No output after a block search
The collected auxiliary function is not output after a block search.
Note
In the case of auxiliary functions for which no output behavior has been defined, the
following default output behavior is active:
• Output duration one OB1 cycle
• Output at block end
Context: Output duration and output relative to movement
Output prior to motion
• The traverse movements (path and/or block-related positioning axis movements) of the
• The auxiliary functions are output at the beginning of the current part program block.
• Traverse movements of the current part program block (path and/or positioning axis
Output during motion
• The auxiliary functions are output at the beginning of the traverse movements (path
• The path velocity of the current part program block is reduced so that the time to the end
– Output duration one OB40 cycle (quick acknowledgment): one OB40 cycle
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previous part program block end with an exact stop.
movements) are started after acknowledgment of the auxiliary functions by the PLC:
– Output duration one OB1 cycle (normal acknowledgment): after one OB1 cycle
– Output duration one OB40 cycle (quick acknowledgment): after one OB40 cycle
and/or positioning axis movements).
of the block is greater than the time to acknowledgment of the auxiliary functions by the
PLC.
– Output duration one OB1 cycle (normal acknowledgment): one OB1 cycle
Basic logic functions: Auxiliary Function Output to PLC (H2)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0