Siemens SINUMERIK 840D sl Function Manual page 1638

Z1: NC/PLC interface signals
19.11 Spindles (S1)
DB31, ...
DBX16.3 Gear is changed over
Edge evaluation: Yes
Edge change 0 → 1 When the new gear stage is engaged, the PLC user sets the interface signals:
DB31, ... DBX16.0 - DBX16.2 (actual gear stages A to C)
and
DB31, ... DBX16.3 (gear is changed over).
This signals the NCK that the correct gear stage has been successfully engaged.
The gear stage change is complete (spindle oscillation mode is deselected), the spindle accelerates
in the new gear stage to the last programmed spindle speed and the next block in the parts program
can be executed.
The interface signal:
DB31, ... DBX82.3 (change over gear)
is reset by the NCK - the PLC user then resets the interface signal:
(gear is changed over).
Edge change 1 → 0 No effect.
Signal irrelevant ... spindle modes other than the oscillation mode
for ...
Special cases, If the PLC user reports back to the NCK with a different actual gear stage than issued by the NCK as
errors, ...... the setpoint gear stage, the gear change is still considered to have been successfully completed and
the actual gear stage A to C is activated.
Corresponding to ... DB31, ... DBX16.2 - DBX16.0 (actual gear stage A to C)
DB31, ... DBX82.2 - DBX82.0 (setpoint gear stage A to C)
DB31, ... DBX82.3 (change over gear stage)
DB31, ... DBX18.5 (oscillation speed)
DB31, ...
DBX16.4 - DBX16.5 Resynchronizing spindles 1 and 2
Edge evaluation: Yes
Edge change 0 → 1 The spindle should be resynchronized, as the synchronization between the position measuring sys‐
tem of the spindle and the 0 degree position has been lost.
Edge change 1 → 0 No effect.
Signal irrelevant ... spindle modes other than the control mode.
for ...
Application exam‐ The machine has a selector switch to changeover between a vertical and a horizontal spindle. Two
ple(s) different position encoders are used (one for the vertical spindle and one for the horizontal spindle),
but only one actual value input is used on the control. When the system switches from the vertical to
the horizontal spindle, the spindle must be resynchronized.
This synchronization is triggered by the IS "re-synchronize spindle 1 or 2".
Corresponding to ... DB31, ... DBX60.4 (referenced / synchronized 1)
DB31, ... DBX60.5 (referenced / synchronized 2)
1638
Signal(s) updated: Cyclically
Signal(s) updated: Cyclically
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions