Siemens SINUMERIK 828D Function Manual page 103

• Working area limits for all channel axes
• A reference system, i.e. the coordinate system on which the working area limitations are based
The number of the working area limitation groups used is set in the machine data:
MD28600 $MC_MM_NUM_WORKAREA_CS_GROUPS
Working area limits
Both the activation of the working area limitation and the working area limits for the individual channel axes are
defined by the following channel-specific system variables:
System variable
$P_WORKAREA_CS_PLUS_ENABLE[<GN>, <AN>]
$P_WORKAREA_CS_LIMIT_PLUS[<GN>, <AN>]
$P_WORKAREA_CS_MINUS_ENABLE[<GN>, <AN>]
$P_WORKAREA_CS_LIMIT_MINUS[<GN>, <AN>]
Parameters
<GN> Number of the working area limitation group
<AN> Channel axis name
The definition is given by writing the system variables through the user interface or in the part program.
Selection of the reference system
The reference system for the group's working area limitations is selected by means of the channel-specific
system variable:
$P_WORKAREA_CS_COORD_SYSTEM [<GN>] = <value>
<value> Meaning
1 Working area limitation based on the workpiece coordinate system
3 Working area limitation based on the AZS
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
A3: Axis Monitoring, Protection Zones
Meaning
Activation of working area limitation in a positive traversing
direction for axis <AN> in group <GN>
Limit value in a positive traversing direction for axis <AN> in
group <GN>
Only effective if:
..._PLUS_ENABLE[<GN>, <AN>] = TRUE
Activation of working area limitation in a negative traversing
direction for axis <AN> in group <GN>
Limit value in a negative traversing direction for axis <AN> in
group <GN>
Only effective if:
..._MINUS_ENABLE[<GN>, <AN>] = TRUE
2.2 Axis monitoring
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