Siemens 611-D, 840C 12.13.5 Traversing an indexing axis to the reference point

06.93 12 Functional Descriptions

12.13.5 Traversing an indexing axis to the reference point

12.13.5 Traversing an indexing axis to the reference point

If the function is used machine-specifically, the indexing axis can be traversed to an

indexing-specific reference point. The distance between a zero mark and an indexing position

can be defined in MD ”Reference point offset”. The indexing axis does not have to be

traversed through a reference point to an indexing position. The axis is automatically traversed

to an indexing position on the next traversing movement after a reference point approach.

Example:

Linear axis; ND = 5 (number of divisions)

DRD = 200.000 µm (division reference dimension)

Reference point = 140.000 µm

Reference point offset = 0

2 3

140.000 µm

µm

4 51

200.000 µm

Illegal

range

NC MD 244* should be preset as follows for machine-specific division:

MD 244* : Reference point offset

S = Distance between zero mark and an indexing position

If the function is used workpiece related, an indexing axis should be set as described above

in order to arrive at the defined division conditions. If the reference dimension, number of

divisions or the indexing axis are altered during machining, the actual division reference value

is lost.

Note:

The illegal range (indexing position < 1) must no be selected as the reference point.

SINUMERIK 840C (IA)