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Siemens SINUMERIK 840D sl Function Manual page 1639

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DB31, ...
DBX16.7
Delete S value
Edge evaluation: Yes
Edge change 0 → 1
Control mode:
● Spindle stops
● Program continues to run
● Spindle continues to run with the following S value, if M3 or M4 were active
Oscillation mode, axis mode, positioning mode:
● Signal has no effect for the corresponding function. However, if the open-loop control mode is
Edge change 1 → 0
No effect.
Application exam‐
Terminating traversing motion on account of an external signal (e.g. sensing probe).
ple(s)
DB31, ...
Re-synchronizing spindle when positioning 1 and 2
DBX17.4 - DBX17.5
Edge evaluation: Yes
Edge change 0 → 1
When positioning, the spindle must be re-synchronized.
Edge change 1 → 0
No effect.
Signal irrelevant
... spindle modes other than the positioning mode.
for ...
Application exam‐
The spindle has an indirect measuring system and slippage may occur between the motor and the
ple(s)
clamp. If the signal=1 - when positioning is started, the old reference is deleted and the zero mark is
searched for again before the end position is approached.
Corresponding to ...
DB31, ... DBX60.4 (referenced / synchronized 1)
DB31, ... DBX60.5 (referenced / synchronized 2)
DB31, ...
DBX17.6
Invert M3/M4
Edge evaluation: Yes
Edge change 0 → 1
The direction of rotation of the spindle motor changes for the following functions:
● M3
● M4
● M5
● SPOS/M19/SPOSA from the motion; not effective for SPOS/M19/SPOSA from zero speed (stationary).
Application exam‐
The machine has a selector switch to changeover between a vertical and a horizontal spindle. The
ple(s)
mechanical design is implemented so that for the horizontal spindle, one more gearwheel is engaged
than for the vertical spindle. The direction of rotation must therefore be changed for the vertical spindle
if the spindle is always to rotate clockwise with M3.
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Signal(s) updated: Cyclically
selected again, a new S value must be programmed.
Signal(s) updated: Cyclically
Signal(s) updated: Cyclically
Z1: NC/PLC interface signals
19.11 Spindles (S1)
1639

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