Siemens SINUMERIK 840D sl Function Manual page 1569

DB31, ...
DBX1.3
Axis/spindle disable
● Effects of "Axis/spindle disable" for spindle or axis couplings:
Signal state 0 The reset of the interface signal does not take effect until the axis/spindle is stationary.
Axis
● Setpoints are output on the position controller again immediately after the reset of the interface
Spindle
● After the reset of the interface signal, the spindle disable which is still effective internally must be
Application exam‐ Prevention of traversing motions of the axis/spindle when running-in an NC program.
ple(s)
Corresponding to ... DB21, ... DBX33.7 (program test active)
Additional references Behavior in synchronous mode:
Function Manual, Extended Functions; Synchronous Spindle (S3)
DB31, ...
DBX1.4
Follow-up mode
Edge evaluation: No
Signal state 1 Follow-up mode is active:
● The position setpoint is continuously tracked: Position setpoint = actual position value
● Feedback signal: DB31, ... DBX61.3 = 1 (follow-up active)
● Standstill and clamping monitoring are not active.
● If an NC program is active when the closed-loop control system is switched on again, a control-
Note
Follow-up mode is only useful with a simultaneous reset of the controller enable: DB31, ... DBX2.1
= 0
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Regarding N40: Axis X traverses from the last position (approx. 20 mm) to the programmed
position 200 mm.
LS/LA FS/FA
1) 2)
0 0
0 1
1 0
1 1
0 0
0 1
1 0
1 1
1) Status of the interface signal DB31, ... DBX99.0 (leading spindle/axis active)
2) Status of the interface signal DB31, ... DBX99.1 (following spindle/axis active)
3) Status of the coupling between leading and following spindle/axis
signal.
cancelled by an axis-specific reset, channel reset or end of program (M30/M2). Only then are
setpoints output on the speed controller again.
Signal(s) updated: Cyclically
internal repositioning operation is performed (REPOSA: Linear approach with all axes) to the last
programmed position.
19.1 Various interface signals and functions (A2)
Coupl. Effect
3)
Off Setpoints are output
Off No setpoint output for following spindle/axis
Off No setpoint output for leading spindle/axis
Off No setpoint output for leading and following spindle/
axis
On Setpoints are output
On Axis/spindle disable has no effect on the FS/FA
On Axis/spindle disable also has an effect on the FS/FA
On No setpoint output
Z1: NC/PLC interface signals
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