Referencing With Incremental Measurement Systems; Hardware Signals - Siemens SINUMERIK 840D Function Manual

R1: Referencing

10.5 Referencing with incremental measurement systems

Referencing must be repeated, for example, after:
● Actual value offset PRESETON
Further information:
Programming Guide Advanced; Coordinate transformations (frames) > Preset offset with
PRESETON
● Function Manual Monitoring and Compensating, parking a machine axis
● Exceeding the encoder limit frequency of the position measuring system
Programming
Syntax
G74 <machine axis> {<machine axis>}
Meaning
G74:
<machine
axis>:
Reset behavior
Mode group reset or channel reset aborts the reference point approach for all programmed
machine axes:
● DB11, ... DBX0.7 (mode group reset)
● DB21, ... DBX7.7 (channel reset)
All machine axes for which the reference point approach is not yet successfully completed
when the action is canceled remain in status "Not referenced":
● DB31, ... DBX60.4 (referenced/synchronized 1) == 0
● DB31, ... DBX60.5 (referenced/synchronized 2) == 0
10.5 Referencing with incremental measurement systems
10.5.1

Hardware signals

Depending on the machine design and the properties of the incremental measuring system
used, different hardware signals must be connected.
296
Command for referencing machine axes
Alone in the Yes
block:
Effective‐ Non-modal
ness:
The name of a machine axis must be specified (MD10000 $MN_AXCONF_MA‐
CHAX_NAME_TAB).
The machine axis must be a channel axis of the channel in which the part program
or the synchronized action is executed.
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA