Siemens SINUMERIK 840D sl Commissioning Manual page 525

In cycle CUST_800.SPF, the function markers (_M2: to _M59) are prepared and
documented. Also refer to the following "Structogram CYCLE800"
Note
If you modify the CUST_800, ensure that the G commands of the G groups used are
restored at the end of the CUST_800 (versions S_G_1 to S_G_%!).
Parameter
CUST_800 (INT _MODE, INT _TC1, REAL _A1, REAL _A2, INT _TC2, REAL _T_POS)
_MODE
_TC1
_A1
_A2
_TC2
_T_POS
Retract prior to swiveling
If the CUST_800.SPF cycle is not modified, the Z axis (marker _M41) or the Z axis followed
by the X, Y axes (marker _M42) are first traversed in the Machine to the positions when
retracting prior to swiveling. The freely available position values are specified in the system
variables $TC_CARR38[n] to $TC_CARR40[n]. When retracting, the active tool cutting edge
is deselected (D0) and is reselected after retraction.
If retraction in the tool direction had been declared, the tool axis is retracted to the software
end position (maximum in tool direction) or by an incremental distance away from the tool in
the tool direction. The tool lengths are taken into account accordingly.
SINUMERIK Operate (IM9)
Commissioning Manual, 03/2013, 6FC5397-1DP40-3BA1
A jump is made to markers _M2 to _M59
Number of the swivel head/table
Angle of rotary axis 1
Angle of rotary axis 2
Feed evaluation in percent (%) for swiveling in JOG mode and number of the new
swivel head/table when replaced in ShopMill
Incremental position during retraction in the incremental tool direction (see marker
_M44, _M45)
Configuring cycles
22.6 Swiveling
519