Traversing Of Indexing Axes In The Automatic Mode - Siemens SINUMERIK 840D sl Function Manual

T1: Indexing axes
16.2 Traversing of indexing axes
Rev. feedrate
In JOG mode, the response of the axis/spindle also depends on the setting data:
SD41100 $SN_JOG_REV_IS_ACTIVE (revolutional feed rate for JOG active)
SD41100
= 1 (active)
= 0 (not active)
16.2.3

Traversing of indexing axes in the AUTOMATIC mode

Traversal to selected positions
An axis defined as an indexing axis can be made to approach any selected position from the
NC part program in AUTOMATIC mode. This includes positions between the defined
indexing positions.
These positions are programmed, in the usual way, in the unit of measurement (mm/inches
or degrees) for the axis. The general programming instructions used for this purpose (G90,
G91, AC, IC, etc.) are described in the Programming Manuals.
Traversal to "Coded positions"
Special instructions can also be used in the part program to traverse indexing axes to the
"coded positions":
Statement
CAC
CACP
CACN
CIC
CDC
With absolute positioning, the indexing position to be approached is programmed, and with
incremental positioning, the number of indexes to be traversed in the "+" or "-" direction is
programmed.
944
Description
The axis/spindle is always traversed with rrevolutional feed rate as a function of
the master spindle:
MD32050 $MA_JOG_REV_VELO (revolutional feed rate for JOG mode)
or
MD32040 $MA_JOG_REV_VELO_RAPID (revolutional feed rate for JOG with
rapid traverse override)
The response of the axis/spindle depends on the setting data:
SD43300 $SA_ASSIGN_FEED_PER_REV_SOURCE(revolutional feed feed rate
for position axes/spindles)
The response of a geometry axis on which a frame acts is to rotate, depending
on the setting data:
SD42600 $SC_JOG_FEED_PER_REV_SOURCE
Effect
Approach absolute coded position
Approach absolute coded position in positive direction
Approach absolute coded position in negative direction
Approach incremental coded position
Approach coded position along direct (shortest) path
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Extended Functions