Detailed description
2.2 Protection zones
Basic logic functions: Axis monitoring, protection zones (A3)
50 Function Manual, 11/2006, 6FC5397-0BP10-2BA0
System variable Type Significance
Type of limitation in the third dimension
0 No limitation
1 Limit in plus direction
2 Limit in minus direction
$SN_PA_LIM_3DIM[n]
$SC_PA_LIM_3DIM[n]
INT
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
$SN_PA_CENT_ABS[n, i]
$SC_PA_CENT_ABS[n, i]
REAL
Center point of the circular contour[i], absolute abscissa
value
$SN_PA_CENT_ORD[n, i]
$SC_PA_CENT_ORD[n, i]
REAL
Center point of the circular contour[i], absolute ordinate
value
$SN_... are system variables for NC and machine-specific protection zones.
$SC_... are system variables for channel-specific protection zones.
The index "n" corresponds to the number of the protection zone: 0 = 1. Protection zone
The index "i" corresponds to the number of the contour element: 0 = 1. Contour element
The contour elements must be defined in ascending order.
Note
The system variables of the protection-zone definitions are not restored with REORG.
Data of the protection-zone definitions
data storage
The protection-zone definitions are stored in the following files:
File Blocks
_N_NCK_PRO Data block for NCspecific protection zones
_N_CHAN1_PRO Data block for channelspecific protection zones in channel 1
_N_CHAN2_PRO Data block for channelspecific protection zones in channel 2
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