Indexing Axis - Siemens SINUMERIK 840D sl Function Manual

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14.6.4.7

Indexing axis

DB380x PLC → NCK control signals
DBX3002.0 Incremental
DBX3002.1 Shortest distance
DBX3002.5 Direction of rotation as for M4
DBX3003.0 Absolute, negative direction
DBX3003.1 Absolute, positive direction
DBD3003.7 Indexing position
DBD3004 Setpoint position/setpoint distance
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Function activated by user with a positive edge of
Note: This is only possible when the
Positioning axis active and Position reached are signaled back, Position reached is in
Signals
this case irrelevant and is therefore not shown.
The user stops spindle oscillation by resetting
The spindle stops and the
Stop .
The user then resets
Stop causes Positioning axis active to be reset.
Reset of
Stop is reset in the user program and Start is again set, incorrectly, in the same PLC cycle. This
Positioning axis active is not reset, but...
means that
Axis cannot be started signal is set (error number 106).
...the
Start .
Positioning axis active signal is reset!
Start and setting Stop .
Spindle stationary signal is set.
Valid val‐ Remark
ues
0|1 Only one of the bits must be set, if all bits are 0, then this
means absolute positioning.
0|1
0
0|1
0|1
1 Indexing axis ON
DINT for "incremental": Setpoint distance
P4: PLC for SINUMERIK 828D
14.6 Function interface
1131