Siemens SINUMERIK 840D sl Programming Manual page 254

Protection zones
3.3 Checking for protection zone violation, working area limitation and software limits (CALCPOSI)
_STARTPOS
_MOVEDIST
_DLIMIT
_MAXDIST
_BASE_SYS
_TESTLIM
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Starting value for abscissa [0], ordinate [1] and applicate [2] in
the (WCS)
Incremental path definition for abscissa [0], ordinate [1] and
applicate [2]
[0] - [2]: Minimum clearances assigned to the geometry axes.
[3]: Minimum clearance assigned to a linear machine axis for
non-linear transformation, if no geometry axis can be uniquely
assigned.
[4]: Minimum clearance assigned to a rotary machine axis for
non-linear transformation, if no geometry axis can be uniquely
assigned. Only for special transformations, if SW limits are to
be monitored.
Array [0] - [2] for the return value. Incremental path in all three
geometry axes without violating the defined minimum
clearance of an axis limit in the machine axes involved.
If the traversing path is not restricted, the contents of this
return parameter are the same as the contents of _MOVDIST.
FALSE or parameters not specified:
When evaluating the position and length data, the G code of
group 13 (G70, G71, G700, G710; inch/metric) is evaluated. If
G70 is active and the basic system is metric (or G71 is active
and inch), the WCS system variables $AA_IW[X] and
$AA_MW[X]) are provided in the basic system and must, if
necessary, be reconverted using the CALCPOSI function.
TRUE:
When evaluating the position and length data, the basic
system of the control is always used independent of the value
of the active G of group 13.
Limits to be checked (binary-coded):
1: Monitor software limits
2: Monitor working area limits
3: Monitor activated protection zones
4: Monitor pre-activated protection zones
Combinations by adding the values. Default: 15; check all.
Programming Manual, 06/2009, 6FC5398-2BP20-0BA0
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