Siemens SINUMERIK 840D sl Function Manual page 340

M3: Coupled axes
5.7 Boundary conditions
External master value axes
When using the REPOS or REPOSA parts program instructions in conjunction with external
master value axes, it should be ensured that these are released by the channel or switched to
a "neutral state" using the RELEASE instruction.
When attempting to reposition without release of the axis, the message "Wait: Feed stop
active" is displayed and the processing of the part program is not continued.
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Function Manual, 09/2011, 6FC5397-2BP40-2BA0
Special Functions