Siemens SINUMERIK 840D sl Function Manual page 1568

Z1: NC/PLC interface signals
19.1 Various interface signals and functions (A2)
DB31, ...
DBX1.3
Axis/spindle disable
Signal state 1 Axis
● No setpoints are output to the position controller, i.e. the axis traversing movement is disabled.
● If the axis is traversed via an NC program or manually, the set position and set velocity are
● Travel commands are output to the NC/PLC interface.
● For a traversing axis, the axis is stopped in compliance with the braking characteristic and an
Spindle
● No setpoints are output on the speed controller during open-loop control mode.
● No setpoints are output on the position controller during positioning mode.
● The traversing motion of the spindle is disabled. The speed setpoint is displayed as the actual
● If the interface signal is set for a rotating spindle, the spindle is stopped in compliance with the
Structure graphic
Note
● If one of the following interface signals is set for a traversing axis/spindle for which "Axis/spindle
● The axis/spindle can still be switched to the "hold" or "follow up" state with DB31, ... DBX1.4
● If "Axis/spindle disable" is briefly set for a traversing axis, the axis is stopped without an alarm.
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The axis is in closed-loop position control and any remaining following error is compensated.
displayed as actual position and actual velocity on the user interface. With channel reset or end
of program (M30/M2), the display of the actual value is set to the actual value of the machine axis.
alarm is displayed.
speed value on the user interface.
acceleration characteristic and an alarm is displayed.
disable" is active, the axis/spindle is not stopped:
– DB21, ... DBX12.3, 16.3 and 20.3 (feedrate stop for geometry axes 1, 2 and 3)
– DB21, ... DBX320.3, 324.3 and 328.3 (feedrate stop for orientation axes 1, 2 and 3)
– DB31, ... DBX4.3 (feedrate stop / spindle stop)
(follow-up mode).
With the next travel request, the axis is traversed to the programmed position.
Example:
N10 G0 X0 Y0
N20 G1 F1000 X100
N30 Y100
N40 X200
Regarding N20: At position 20 mm,"Axis/spindle disable" is briefly set for axis X ⇒ axis X is stopped
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions