Siemens SINUMERIK 802D sl Function Manual page 94

Gantry axes (G1)
6.3 Referencing and synchronizing gantry axes
Synchronization process
A synchronization process is always required in the following cases:
● after the reference point approach of all axes included in a grouping,
● if the axes become desynchronized (see below).
Operational sequence failure
If the referencing process described above is interrupted as a result of disturbances or a
RESET, proceed as follows:
● Abort within section 1 or 2:
● Abort in section 3:
Restart gantry synchronization
Synchronization of the gantry axes can be started with IS "Start gantry synchronization"
under the following conditions only:
● JOG/REF mode must be active. The following interface signal must be set:
● V390x 5005.5 = 0 (gantry grouping is synchronized)
● All grouping axes operate within the tolerance windows:
● Axis is not referenced in the NC channel
If gantry synchronization is not started from the referencing process by means of IS "Start
gantry synchronization", then the current actual position of the leading axis - rather than the
referencing position from MD34100 - will be specified as the target position and approached
in the decoupled state.
Note
Automatic synchronization can be locked by the leading axis by means of the following
interface signal:
V380x 5005.5 (automatic synchronization locking)
This always makes sense if no axis enabling signal has yet been issued for the axes. In this
case, the synchronization process should also be started explicitly with the interface signal:
V380x 5005.4 = 1 (start gantry synchronization)
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Restart reference point with leading axis (see section 1)
In cases where the gantry axes have not yet been referenced (IS
"Referenced/Synchronized" = 1), the gantry synchronization process can be started again
with IS "Synchronize gantry grouping".
V3100 0001.2 (active machine function REF)
V390x 5005.4 = 1 ("Gantry synchronization ready to start")
V3300 0001.0 = 0 (referencing active)
Turning, Milling, Nibbling
Function Manual, 11/2012, 6FC5397-1CP10-5BA0