Siemens SINUMERIK 840D sl Function Manual page 968

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Indexing Axes (T1)

Traversing of indexing axes

Traversing of indexing axes

General information

Indexing axes can be traversed:

● Manually in the setting-up modes JOG and INC

● from one part program with special instructions for coded positions

Upon reaching the indexing position the following interface signal is given out to the PLC:

DB31, ... DBX76.6 (indexing axis in position)

Hirth indexing axes cannot be traversed in JOG mode before reference point approach.

Traversing of indexing axes in the JOG mode

Reference point approach

An indexing axis approaches the reference point in the same way as other axes. The

reference point does not have to coincide with an indexing position.

When reference point is reached:

DB31, ... DBX60.4 or 5 (referenced/synchronized 1 or 2) = 1

the indexing axis moves only to indexing positions in JOG mode during conventional and

incremental traversing.

Exception: No indexing positions are approached when traversing with the handwheel.

If the axis is not referenced (DB31, ... DBX60.4 or 5 = 0), the indexing positions are ignored

when traversing in JOG mode!

Function Manual, 03/2009, 6FC5397-1BP10-4BA0

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Sinumerik 840de sl