Siemens SINUMERIK 840D Function Manual page 423

Distance-to-go: Coupled motion axis
The distance-to-go of a coupled motion axis refers to the total residual distance to be traversed
from dependent and independent traversing.
Delete distance-to-go: Coupled motion axis
Delete distance-to-go for a coupled motion axis only results in aborting of the independent
traversing movement of the leading axis.
Response to NC Start
The behavior of the coupled-axis groupings during NC Start depends on the setting in the
machine data:
MD20112 $MC_START_MODE_MASK (definition of initial control settings for NC-START)
Bit
8
Response to RESET/part program end
The behavior of the coupled-axis groupings during RESET/ part program end depends on the
setting in the machine data:
MD20110 $MC_RESET_MODE_MASK (definition of initial control settings after RESET / TP
end)
Bit
8
Note
If with NC RESET or end of part program in a channel, the leading axis is not stopped as well
(cross-channel coupling, command axis, PLC axis, etc.), the requested RESET cannot be
completed.
Because of traversing of the leading axis, the coupled-motion axis is still active for the channel
in which the RESET is requested. With suitable actions (NC RESET in the channel of the
leading axis, stopping of the command or PLC axis), the leading axis must also be stopped in
parallel to the coupled-motion axis.
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA
Value Meaning
0 Coupled-axis groupings are maintained in NC Start.
1 Coupled-axis groupings are phased out in NC Start.
Value Meaning
0 Coupled-axis groupings are invalidated on RESET / part program end.
1 Coupled-axis groupings remain active even beyond RESET/part program end.
M3: Coupled axes
14.1 Coupled motion
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