Siemens SINUMERIK 840D sl Function Manual page 153

<MaxDist>:
<System>:
<TestLim>:
1) If several protection zones are violated, the protection zone with the greatest restriction on the
specified traversing distance is returned.
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Reference to a vector with the incremental traversing distance in which the specified
minimum clearance of an axis limit is not violated by any of the relevant machine
axes:
● <Dist> [0]: Abscissa
● <Dist> [1]: Ordinate
● <Dist> [2]: Applicate
If the traversing distance is not restricted, the contents of this return parameter are
the same as the contents of <Dist>.
With <TestID>, bit 4 == 1: <Dist> and <MaxDist>
<MaxDist> and <Dist> must contain vectors as input values that span a motion plane.
The two vectors must be mutually linearly dependent. The absolute value of <MaxD‐
ist> is arbitrary. For the calculation of the motion direction, see the description for
<Dist>.
Parameter type: Output
Data type: VAR REAL [3]
Range of values: -max. REAL value ≤ x[n] ≤ +max. REAL value
Measuring system (inch/metric) for position and distance specifications (optional)
Data type: BOOL
Default value: FALSE
Value Meaning
FALSE Measuring system corresponding to the currently active G func‐
tion from G group 13 (G70, G71, G700, G710).
Note
If G70 is active and the basic system is metric (or G71 is active
and the basic system is inch), the system variables $AA_IW
and $AA_MW are provided in the basic system and, if used,
must be converted for CALCPOSI().
TRUE Measuring system corresponding to the set basic system:
MD52806 $MN_ISO_SCALING_SYSTEM
Bit-coded selection of the limits to be monitored (optional)
Data type: INT
Default value: Bit 0, 1, 2, 3 == 1 (15)
Bit Decimal Meaning
0 1 Software limit switch
1 2 Working area limitation
2 4 Activated conventional protection zones
3 8 Preactivated conventional protection zones
4 16 With violated software limit switches or working area limits in
<Dist>, return the traversing direction as in Case 1 (see above).
5 32 With violated software limit switches or working area limits in
<Dist>, return the traversing direction as in Case 2 (see above).
6 64 Activated collision avoidance protection zones
7 128 Preactivated collision avoidance protection zones
8 256 Pairs of activated and preactivated collision avoidance protec‐
tion zones
A3: Axis Monitoring, Protection Zones
3.3 Protection zones
153