HEIDENHAIN CNC Pilot 4290 V7.1 - Manual (Page 308)

308
4.32 Other G F
unctions
Deactivate zero-point shifts G920
G920 deactivates the workpiece zero point and zero-point shifts.
Traverse paths and position values are referenced to the distance
tool tip – machine zero point.
Deactivate zero-point shifts, tool lengths G921
G921 deactivates the workpiece zero point, zero point shifts and tool
dimensions. Traverse paths and position values are referenced to the
slide reference point – machine zero point.
T no. internal G940
G940 finds the actual magazine tool to be inserted. G940 is usually
used in the context of expert programs with plate magazines.
If the tool life management is used, a replacement tool is inserted as
soon as the programmed tool age has expired. G940 finds the actual
tool to be inserted. The programmed tool is transferred in P. In reply,
the tool actually to be inserted is written in the following variables:
„ V311: pp
„ V312: dd
„ V313: mm
„ V331: mmddpp
Parameters
P Tool number of the form of “mmDDpp”
„ mm: Pocket number on the plate magazine
„ DD: Position in the magazine list
„ pp: Turret pocket. For a tool holder, pp=01