Siemens SINUMERIK 840Di Function Manual page 2010

Detailed Description
2.16 Feeds (V1)
DB31, ...
DBX4.3 Feed stop/spindle stop (axis-specific)
Edge evaluation: no
Signal state 1 or The signal is active in all modes.
edge change
Feed stop:
0 → 1
The signal triggers a "Feed stop" for the axis. This signal brings all traversing axes to a standstill
with controlled braking (ramp stop). No alarm is output.
The signal triggers a "feed stop" for all path axes interpolating relative to each other when the "Feed
stop" is activated for any one of these path axes. In this case, all the axes are brought to a stop with
adherence to the path contour. When the "Feed stop" signal is canceled, execution of the
interrupted parts program is resumed.
The position control is retained, i.e. the following error is eliminated.
If a travel request is issued for an axis with an active "Feed stop", this is kept. This queued travel
request is executed immediately after the "Feed stop" is canceled.
If the axis is interpolating in relation to others, this also applies to these axes.
Spindle stop:
The spindle is brought to a standstill along the acceleration characteristic.
In the positioning mode, when the "Spindle stop" signal is set positioning is interrupted. The above
response applies with respect to individual axes.
Signal state 0 or Feed stop:
edge change
The feed rate is enabled for the axis.
1 → 0
If a travel request ("Travel command") is active when the "Feed stop" is canceled, this is executed
immediately.
Spindle stop:
The speed is enabled for the spindle.
The spindle is accelerated to the previous speed setpoint with the acceleration characteristic or, in
positioning mode, positioning is resumed.
Application Feed stop:
example(s)
The traversing motion of the machine axes is not started with "Feed stop", if, for example, certain
operating states exist at the machine that do not permit the axes to be moved (e.g. a door is not
closed).
Spindle stop:
In order to change a tool.
To enter help functions (M, S, H, T, D and F functions) during setup.
Special cases, Spindle stop is inactive when G331, G332 are active.
errors, ......
2-146
Signal(s) updated: cyclic
NC/PLC Interface Signals (Z1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0