Introduction

By means of selection of a coordinate system (CS), the machining coordinate system (BKS) can be shifted and rotated with respect to the machine coordinate system (MKS). As the NC program coordinates refer to the machining coordinate system, easy NC programming is enabled even in slanting or twisted positions.

As selection of a coordinate system can ultimately be an offset, the other offsets are also discussed here.

The following offsets are available:

• Offset due to a coordinate system selection
• Offset due to a measurement run
• Offset due to manual operation in the case of parallel interpolation
• Offset due to position preset
• Reference point offset
• Tool offset
• Zero offset
• Clamping position offset

Effectiveness

Offsets are always active from selection to cancellation or reparameterization offsets additionally programmed while a coordinate system is selected are valid only up to cancellation of the coordinate system.

Special case in the G91 mode Newly selected offsets do not take effect until programmed in the absolute measurement system (G90) because only ever the specified travel distance may be travelled in the case of relative programming (G91). Tool offsets exception: With appropriate parameterisation, tool offsets are travelled directly without programming of a travel movement when the D word [PROG]removed link: [PROG] is selected.

Parameterisation

Parameterization by means of the NC program:

• Offset due to a coordinate system selection
• Offset due to a measurement run
• Offset due to position preset
• Reference point offset
• Offset due to manual operation in the case of parallel interpolation.

Parameterization by means of the tool parameter list [TOOL]:

• Tool offset

Parameterization by means of the zero point data list [ZERO]:

• Zero offset

Parameterization by means of the position offset data list [CLMP]:

• Clamping position offset