Siemens SINUMERIK 840D Function Manual page 158

V1: Feedrates
5.4 Feedrate control
Channel-specific "Feed stop" for geometry axes in the JOG mode
The traversing motion of a specific geometry axis of the channel is stopped using the channel-
specific NC/PLC interface signals:
● DB21, ... DBX12.3 (feedrate stop, geometry axis 1)
● DB21, ... DBX16.3 (feedrate stop, geometry axis 2)
● DB21, ... DBX20.3 (feedrate stop, geometry axis 3)
The interface signals are only active in the JOG mode.
Axis-specific "Feedrate stop/spindle stop" for machine axes
Traversing motion of the machine axis is stopped using the axis-specific NC/PLC interface
signal:
DB31, ... DBX4.3 (feedrate stop / spindle stop)
AUTOMATIC and MDI modes
The following applies in the AUTOMATIC and MDI modes:
● If the "Feed stop" is performed for a path axis, all the axes traversed in the current block and
all axes participating in the axis group are stopped.
● If the "Feed stop" is performed for a positioning axis, only this axis is stopped.
Thread cutting
Thread cutting
G33, G34, G35
G331, G332
G63
Axis-specific axis/spindle disable for machine axes
Traversing motion of the machine axis is stopped using the axis-specific NC/PLC interface
signal:
DB31, ... DBX1.3 (axis/spindle disable)
158
Effectiveness
Effective
Notice
Contour deviation
Effective
Axis: Effective
Spindle: Not effective
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA