P2: Positioning axes
10.3 Motion behavior and interpolation functions
Extended Functions
612 Function Manual, 03/2013, 6FC5397-1BP40-3BA1
Use case 3: Continue axis/spindle
Traversing motion interrupted after Use case 2 "Stop axis" should be continued.
Description of the sequence:
● PLC → NCK: Continue axis
DB31, ... DBX28.2 = 1 (continue)
● NCK: Checks whether for the axis/spindle an axial alarm with delete criterion
"CANCELCLEAR" or "NCSTARTCLEAR" is present? If yes, then this is deleted.
● NCK: Checks whether axis motion can be resumed? If yes, then the axis/spindle makes
the transition into the "active" state.
● NCK confirms the execution:
– DB31, ... DBX60.6 = 0 (exact stop coarse)
– DB31, ... DBX60.7 = 0 (exact stop fine)
– DB31, ... DBX63.2 = 0 (axis stop active)
– DB31, ... DBX64.6 / 7 = 1 (traversing command minus/plus)
– Axis state active with system variable $AA_SNGLAX_STAT == 4.
Result: Traversing motion of the axis/spindle is continued.
Boundary conditions
In the following cases, the request to continue is ignored:
● The axis/spindle is not controlled by the PLC.
● The axis/spindle is not in the stopped state.
● An alarm is pending for the axis/spindle.
Use case 4: Reset axis/spindle (reset)
Description of the sequence:
● PLC → NCK: Reset request for this axis/spindle
DB31, ... DBX28.1 = 1 (reset)
● NCK: Transitions the axis/spindle into the "stopped" state.
● NCK: Interrupts the stopped sequences and signals to the PLC the interruption -
essentially the same as for "Delete distance-to-go".
● NCK: The internal states for the axis/spindle are reset.
● NCK: The axial machine data effective at reset becomes active.
Note
In contrast to a reset due to DB31, ... DBX28.1 = 1 (reset), in conjunction with a channel
reset, no axial machine data is active for axes controlled from the PLC.
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