Detailed description
2.1 Axis monitoring
Basic logic functions: Axis monitoring, protection zones (A3)
34 Function Manual, 11/2006, 6FC5397-0BP10-2BA0
General
• Changing of the software limit switch (1st ↔ 2nd software limit switch)
If the actual position of the machine axis after changing lies behind the software limit
switch, it is stopped with the maximum permissible acceleration.
• Overrunning the software limit switch in JOG mode
If the position of the software limit switch is reached and renewed pressing of the
traversing button should cause further travel in this direction, an alarm is displayed and
the axis is not traversed farther:
Alarm 10621 "Channel <Channel number> Axis <Axis identifier> is at the software limit
switch <Direction>"
2.1.8 Monitoring of the working area limitation
2.1.8.1 General
Function
The function "working area limitation" limits the traversing range of geometry axis and
special axis in the working area and monitors the adherence to the limits during the
traversing of the axes.
The following versions are available:
• Working area limitation in BKS
The coordinate data for limiting the working area refer to the basic coordinate system.
• Working area limitation in WKS/ENS
The coordinate data for limiting the working area refer to the workpiece coordinate
system (WKS) and settable zero system (ENS).
Both the working area limitation monitorings are independent of each other. If both
monitoring functions are active, that limit becomes effective which the axis motion first
reaches.
Reference point at the tool
Taking into account the tool data (tool length and tool radius) and therefore the reference
point at the tool when monitoring the working area limitation depends on the activity of
certain transformations:
• Transformations are not active
Without transformations during traversing motion with an active tool the position of the
tool tip P is monitored, i.e., during the monitoring the tool length is considered
automatically.
Consideration of the tool radius must be activated separately:
MD21020 $MC_WORKAREA_WITH_TOOL_RADIUS (Consideration of the tool radius in
the working area limitation)
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