Siemens sinumerik 840D sl Function Manual page 62

Detailed description
2.6 Generic 5-axis transformation and variants
2.6.6 Cartesian manual travel with generic transformation
Functionality
The "Cartesian manual travel" function, as a reference system for JOG mode, allows axes to
be set independently of each other in Cartesian coordinate systems:
• Basic coordinate system (BCS)
• Workpiece coordinate system (WCS)
• Tool coordinate system (TCS)
The following machine data not only activates the function, but also sets the permitted
coordinate systems.
MD21106 $MC_CART_JOG_SYSTEM (coordinate systems for Cartesian JOG)
For JOG motion, one of the three reference systems can be set not only for the
translation/movement of the geometry axes, but also for tool orientation/movement of the
orientation axes via the setting data SD42650 $SC_CART_JOG_MODE (coordinate systems
for Cartesian manual traverse) independently from one another.
Activation
The following machine data not only activates the function, but also sets the permitted
coordinate systems.
MD21106 $MC_CART_JOG_SYSTEM (coordinate systems for Cartesian JOG)
The following setting data sets the virtual kinematics used for traversing motion of the
orientation:
SD42660 $SC_ORI_JOG_MODE (definition of virtual kinematics for JOG)
As opposed to the generic 5-/6-axis transformation, only kinematics can be set in which the
rotary axes are perpendicular to one another.
The traversing of the geometry and orientation axes is performed via the VDI interface
signals of the geometry or orientation axes.
Translations
A translatory movement can be used to move the tool tip (TCP) 3-dimensionally in parallel to
the axes of the set reference system. Traversing is performed via the VDI interface signals of
the geometry axes.
Note
For further information about the representation of the translations for the Cartesian manual
travel in the corresponding coordinate systems, see:
References: /FB2/ Function Manual, Extended Functions, "Cartesian Manual Travel (810D
powerline)" (M1)
56
Special functions: 3-Axis to 5-Axis Transformation (F2)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0