Glossary
Basic Functions
1754 Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Auxiliary functions
Auxiliary functions enable → part programs to transfer → parameters to the → PLC, which then trigger
reactions defined by the machine manufacturer.
Axes
In accordance with their functional scope, the CNC axes are subdivided into:
• Axes: interpolating path axes
• Auxiliary axes: non-interpolating feed and positioning axes with an axis-specific feed rate. Auxiliary axes are
not involved in actual machining, e.g. tool feeder, tool magazine.
Axis address
See → Axis identifier
Axis identifier
Axes are identifed using X, Y, and Z as defined in DIN 66217 for a dextrorotatory, right-angled → coordinate
system.
Rotary axes rotating around X, Y, and Z are identified using A, B, and C. Additional axes situated parallel to the
specified axes can be designated using other letters.
Axis name
See → Axis identifier
Backlash compensation
Compensation for a mechanical machine backlash, e.g. backlash on reversal for ball screws. Backlash
compensation can be entered separately for each axis.
Backup battery
The backup battery ensures that the → user program in the → CPU is stored so that it is safe from power failure
and so that specified data areas and bit memory, timers and counters are stored retentively.
Base axis
Axis whose setpoint or actual value position forms the basis of the calculation of a compensation value.
Basic Coordinate System
Cartesian coordinate system which is mapped by transformation onto the machine coordinate system.
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