Defining a control area (#CONTROL AREA BEGIN/END)
Time of definition
No workspace/protection areas are predefined when the controller starts up. A definition in the configuration lists is not possible.
A work or protection space is defined directly in the NC program in a sequence of path motions embedded in plain text commands.
In this case, path motions must always be programmed in absolute dimensions. The contour of the control area in the plane is defined either by a closed polygon formed in any shape by linear blocks (target point and starting point of the block sequence must be identical) or by a full circle. The excursion in the third dimension and further characteristics of the control area are defined in the assigned plaintext command.
Syntax for Start of control area definition: |
#CONTROL AREA BEGIN [ ID=.. WORK | PROT POLY | CIRC MIN_EXCUR=.. MAX_EXCUR=.. [EXCUR_AX=.. |EXCUR_AXNR=..] [MONITOR_LVL=..] ] |
ID=.. | Identification number of the control area (ID). The definition is global valid after program end and RESET. Up to 20 different control areas can be defined. |
WORK | Control area is a workspace. |
PROT | Control area is a protection space. |
POLY | Contour of a control area is defined as a polygonal shape. |
CIRC | Contour of a control area is defined as a full circle. |
MIN_EXCUR=.. | Limitation of the control area in the third dimension in negative direction in [mm, inch]. |
MAX_EXCUR=.. | Limitation of the control area in the third dimension in positive direction in [mm, inch]. |
EXCUR_AX=.. | Optional specification of an axis identifier for the third excursion direction of the workspace or protection area (as of CNC Build V2.11.2025.00). By default the third main axis is used. |
EXCUR_AXNR=.. | Optional specification of a logical axis number for the third excursion direction of the workspace or protection area (as of CNC Build V2.11.2025.00). By default the third main axis is used. |
MONITOR_LVL=.. | Specification of the monitoring level, see Control levels (as of CNC Build V3.1.3079.42) IMCS: Intermediate coordinate system (only practical with multi-step transformations) MCS: Machine coordinate system (default) |
Syntax for End of control area definition: |
#CONTROL AREA END |
Each control area must be closed by the command #CONTROL AREA END. Only then can further control areas be defined.
 | A deactivated area can be overwritten by reprogramming using the same ID. |
Notice | |
Active Cartesian transformations #(A)CS are not considered in the definition of monitored spaces. Workspaces and protection areas are always defined as Cartesian in the MCS coordinate system. |
Programming Example
Define control areas
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