Overview
Task
Software limit switches (SWE) limit the maximum travel distance of an axis.
Properties
The positions of the SWE can be configured for the following axis types:
- Linear axes.
- Rotary axes that are not operated as modulo axes
SWE monitoring is only active if the axis
- is referenced or
- used with an absolute position measuring system (P-AXIS-00014).
Parameterisation
The positions of the SWE must be configured for each axis with P-AXIS-00177 and P-AXIS-00178.
Programming
The following applies concerning the validity of limit switch positions for all builds of V2.11.20xx and V2.11.28xx:
- The limit value can be further restricted in the NC program by programming but cannot be increased. In other words, the limit value defined in the axis parameter list cannot be increased by G98.
- In static axis constellations (without axis exchange) the limit value changed in the NC program first remains valid at program end and is also effective in the next NC program activated. Only after CNC reset followed by a program restart does the original default value become valid again.
As of Build V3.1.3077.0 the following applies:
- See description in Section “Supplements to G98 and G99”
Mandatory note on references to other documents
For the sake of clarity, links to other documents and parameters are abbreviated, e.g. [PROG] for the Programming Manual or P-AXIS-00001 for an axis parameter.
For technical reasons, these links only function in the Online Help (HTML5, CHM) but not in pdf files since pdfs do not support cross-linking.