G1: Gantry Axes; Signals To Axis/Spindle (Db31 - Siemens SINUMERIK 840D sl Function Manual

25.2

G1: Gantry axes

25.2.1

Signals to axis/spindle (DB31, ...)

DB31, ...
DBX29.4
Edge evaluation: No
Signal state 1 or edge
change 0 → 1
Signal state 0 or edge
change 1 → 0
Signal irrelevant for ...
Application example(s)
Corresponding
to ....
DB31, ...
DBX29.5
Edge evaluation: No
Signal state 1 or edge
change 0 → 1
Signal state 0 or edge
change 1 → 0
Special functions
Function Manual, 01/2015, 6FC5397-2BP40-5BA2
Start gantry synchronization
Signal(s) updated: Cyclic
Request from PLC user program to synchronize the leading axis with the assigned synchron‐
ized axes:
MD37100 $MA_GANTRY_AXIS_TYPE (gantry axis definition)
(i.e. all gantry axes approach the reference position of the gantry grouping in the decoupled
state).
Synchronization of the gantry axes can be started only under the following conditions:
● REF machine function must be active
● DB11, ... DBX5.2 (REF active machine function) = 1
● DB31, ... DBX101.5 (gantry grouping is synchronized) = 0
● DB31, ... DBX101.4 (gantry synchronization ready to start) = 1
● No axis is being referenced in the appropriate NC channel:
DB21, ... DBX33.0 (referencing active) = 0
The PLC user program can then, for example, reset the interface signal to signal state "0" on
completion of gantry synchronization (DB31, ... DBX101.5 = 1).
If the IS is set continuously to "1", the gantry synchronization run would be started automatically
as soon as the above conditions are fulfilled.
Gantry synchronized axis
If the deviation between the position actual values and the reference position is greater than
the gantry warning threshold after referencing of the gantry axes, automatic gantry synchroni‐
zation is not started and IS "Gantry synchronization ready to start" is set to "1".
Synchronization of the gantry axes can be started by the user or the PLC user program with
IS "Start gantry synchronization".
DB31, ... DBX101.5 (gantry grouping is synchronized)
DB31, ... DBX101.4 (gantry synchronization ready to start)
DB11, ... DBX5.2 (REF active machine function)
DB21, ... DBX33.0 (referencing active)
Disable automatic synchronization
Signal(s) updated:
No automatic synchronization.
The automatic synchronization process is active.
Z3: NC/PLC interface signals
25.2 G1: Gantry axes
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