Siemens SINUMERIK 840D sl Function Manual page 119

Deactivation, preactivation, activation via part program
The activation status of a channel- or machine-specific protection zone is defined by the
corresponding subroutine:
• Channel-specific protection zone:
• Machine or NC-specific protection zone:
Parameters
n
state
xMov,
yMov, zMov
Offsets
During preactivation or activation of the protection zone, an offset can be entered in 0 to 3
dimensions. The offset refers to:
• Workpiece-related protection zones: Machine zero
• Tool-related protection zones: Tool holder reference point F
Activation via PLC user program
A protection zone preactivated in the part program can be activated in the PLC user
program.
Preactivated protection zones
The NC indicates the preactivated protection zones:
DB21, ... DBX272.0 to 273.1 (machine-related protection zone 1 - 10 preactivated)
DB21, ... DBX274.0 to 275.1 (channel-specific protection zone 1 - 10 preactivated)
Protection-zone violation
Activated and preactivated protection zones that are or would be violated by the
programmed traversing motions of the current part-program block if the PLC user program
would activate the preactivated protection zone:
DB21, ... DBX276.0 to DBX277.1 (machine-related protection zone 1 - 10 violated)
Basic logic functions: Axis monitoring, protection zones (A3)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
CPROT (n, state, xMov, yMov, zMov)
NPROT (n, state, xMov, yMov, zMov)
Type Description
INT Number of the protection zone
INT Activation status
0
1
2
REAL Offset values of the previously defined protection zone in the geometry axes
Note
A protection zone cannot be activated in a single channel with different offsets
simultaneously.
Deactivated
Preactivated
Enabled
Detailed description
2.2 Protection zones
53