Detailed Description
2.4 Protection zones
Axis Monitoring, Protection Zones (A3)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
2-37
The same supplementary conditions apply for the definition of the contour of a protection
zone as for a protection zone definition via part program instructions.
System variable
The protection zone definitions include the following system variables:
System variable Type Meaning
$SN_PA_ACTIV_IMME
D[n]
$SC_PA_ACTIV_IMME
D[n]
BOOL
Activation type
The protection zone is active immediately after power up of the
control and referencing of the axes.
FALSE: not immediately active
TRUE: immediately active
$SN_PA_T_W[n]
$SC_PA_T_W[n]
INT
Protection zone type
0: Workpiece-related protection zone
1: Reserved
2: Reserved
3: Tool-related protection zone
$SN_PA_ORI[n]
$SC_PA_ORI[n]
INT
Orientation of the protection zone, i.e. polygon definition in the plane
of:
0: 1. and 2nd geometry axis
1: 3. and 1st geometry axis
2: 2. and 3ard geometry axis
$SN_PA_LIM_3DIM[n]
$SC_PA_LIM_3DIM[n]
INT
Type of limitation in the third dimension
0: No limit
1: Limit in positive direction
2: Limit in negative direction
3: Limit in positive and negative direction
$SN_PA_PLUS_LIM[n]
$SC_PA_PLUS_LIM[n]
REAL
Value of the limit in the positive direction in the 3rd dimension
$SN_PA_MINUS_LIM[
n]
$SC_PA_MINUS_LIM[
n]
REAL
Value of the limit in the negative direction in the 3rd dimension
$SN_PA_CONT_NUM[
n]
$SC_PA_CONT_NUM[
n]
INT
Number of valid contour elements
$SN_PA_CONT_TYP[n
, i]
$SC_PA_CONT_TYP[n
, i]
INT
Contour type[i], contour type (G1, G2, G3) of the nth contour element
$SN_PA_CONT_ABS[
n, i]
$SC_PA_CONT_ABS[
n, i]
REAL
End point of the contour[i], abscissa value
$SN_PA_CONT_ORD[
n, i]
$SC_PA_CONT_ORD[
n, i]
REAL
End point of the contour[i], ordinate value
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