Siemens SINUMERIK 840C - Manual (Page 1094)

07.97 12 Functional Descriptions
12.32.6 Adaptation of the protection zone to the active tool
The axes in which the tool offset in the NC channel is calculated and that of the protection
zone coordinate that is to be adapted to it are assigned to one another in the axis-specific
machine data MD 3938*.
Gen. machine data
TO allowance:
MD 300
Axis-specific machine data
Coord. assignment:
MD 3948*
12.32.7 Activating machine space adaptation
Because the active tool offset is defined within an NC channel, but a protection zone cannot
be assigned permanently to an NC channel, this assignment must be made to depend on the
machining situation using a G function.
G181 S<protection zone number>
The protection zone designator S and the <protection zone number> must be programmed
immediately after the G function.
The G function is modal so that changes in the D number are automatically calculated.
To achieve collision monitoring without any delay in protection zone adaptation to the tool
offset values, all relevant data must be specified in the part program block on tool change.
Example:
N100 T<tool location No.> D<tool No.> G180<protection zone No.>
Each channel can change the assignment of the channel to the protection zone and therefore
protection zone adaptation at any time.
The tool offset number D0, Program end and RESET all have no effect on protection zone
adaptation. Protection zone adaptation is only deactivated by the G function:
G180 S<protection zone No.>
The protection zone designator S and the <protection zone No.> must be programmed
immediately after the G function.
© Siemens AG 1992 All Rights Reserved 6FC5197- AA50 12–319
SINUMERIK 840C (IA)