Axis Homing - Siemens SINUMERIK 840D sl Commissioning Manual

NCK start-up
10.5 Parameterize axis data
10.5.12

Axis homing

referencing
When referencing a machine axis, the actual position value system of the machine axis is
synchronized with the machine geometry. Depending on the encoder type used, the machine
axis is referenced with or without traversing movements.
Reference point approach
For all machine axes which are not equipped with an encoder providing an absolute actual
position value, referencing is carried out by traversing the machine axis to a reference point;
this is called the reference point approach.
The reference point approach can be carried out either manually in JOG mode, submode
REF, or using a parts program.
With the operating mode JOG and submode REF, reference point approach is started using
traverse direction keys PLUS or MINUS (depending on the parameterized reference point
approach direction).
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Commissioning Manual, 07/2007, 6FC5397-2AP10-3BA0
IBN CNC: NCK, PLC, drive