Traversing Of Indexing Axes By Plc - Siemens SINUMERIK 840D Function Manual

Continuous operation
In continuous operation (SD41050 $SN_JOG_CONT_MODE_LEVELTRIGGRD = 0), after
actuating the traversing key (first rising edge), the indexing axis is traversed as usual. The
indexing axis is immediately stopped when the traversing key is actuated again (second rising
edge). Under certain circumstances, the indexing axis is then not located at an indexing
position. Traversing motion is continued at the indexing position by again actuating the
traversing key.
Revolutional feedrate
The revolution feedrate with which the indexing axis is traversed in the JOG mode is dependent
on:
SD41100 $SN_JOG_REV_IS_ACTIVE, bit 0 = <value>
<Value> Meaning
Further information
● V1: Feedrates (Page 125)
● H1: Manual traversing (Page 633)
● Programming Manual Fundamentals, Feedrate control
8.2.3

Traversing of indexing axes by PLC

Indexing axes can be traversed from the PLC user program.
● Competing positioning axes, see Section "P2: Positioning axes (Page 185)"
● Asynchronous subprograms (ASUBs)
Further information:
Function Manual Basic Functions; Mode group, channel, program operation, reset response
See also
R1: Referencing (Page 291)
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA
0 Depending on the traversing mode, the revolutional feed rate is defined by the following
setting data:
● The indexing axis traverses as positioning axis:
SD43300 $SA_ASSIGN_FEED_PER_REV_SOURCE (revolutional feedrate for
positioning axes)
● The indexing axis traverses as geometry axis, on which a frame with rotation acts:
SD42600 $SC_JOG_FEED_PER_REV_SOURCE (revolutional feedrate in JOG)
1 The indexing axis is traversed with a rotational feedrate derived from the master spindle:
Corresponding machine data:
● MD32050 $MA_JOG_REV_VELO (revolutional feed rate for JOG mode)
● MD32040 $MA_JOG_REV_VELO_RAPID (revolutional feed rate for JOG with rapid
traverse override)
T1: Indexing axes
8.2 Detailed description
241