Checking For Protection Zone Violation, Working Area Limitation And Software Limits (Calcposi) - Siemens SINUMERIK 840D sl Programming Manual

Protection zones

3.3 Checking for protection zone violation, working area limitation and software limits (CALCPOSI)

3.3 Checking for protection zone violation, working area limitation and
3.3 software limits (CALCPOSI)
Function
The CALCPOSI function is for checking whether, starting from a defined starting point, the
geometry axes can traverse a defined path without violating the axis limits (software limits),
working area limitations, or protection zones.
If the defined path cannot be traversed, the maximum permissible path is returned.
The CALCPOSI function is a predefined subprogram. It must be alone in a block.
Syntax
Status=CALCPOSI(_STARTPOS, _MOVDIST, _DLIMIT, _MAXDIST, _BASE_SYS,
_TESTLIM)
Significance
Status
252
0: Function OK,
the specified path can be completely traversed.
–: At least one component is negative in _DLIMIT
–: An error has occurred in a transformation calculation
If the specified path cannot be completely traversed, then a
positive, decimal-coded value is returned:
Units digit (type of violated limit):
1: Software limits are limiting the traversing path.
2: Working area limits are limiting the traversing path.
3: Software limits are limiting the traversing path.
If several limits are violated simultaneously (e.g. software
limits and protection zones), the limit that results in the most
significant restriction in the specified traversing path is
indicated in the units digit.
Programming Manual, 06/2009, 6FC5398-2BP20-0BA0
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