HEIDENHAIN iTNC 530 HSCI - Renewed Traversing of the Reference Marks

804 HEIDENHAIN Technical Manual iTNC 530 HSCI
Renewed
traversing of the
reference marks
Module 9220 Renewed traversing of the reference marks
With this module you start an NC or PLC axis or a servo-controlled spindle for
traversing the reference mark. It is possible to repeat the reference mark
traverse in an axis that has already been referenced. The module can be called
in all operating modes. Software limit switches are not effective. The strobe
marker must remain set for the entire duration of the reference-mark traverse.
Axis:
 The sequence of functions (MP1350.x) and the velocity for leaving the
reference end position (MP1331.x) are defined by machine parameter.
 The velocity and the direction for traversing the reference marks are either
taken from MP1330.x and MP1320.x or they are defined in the module.
 If an axis is started for reference point traverse although the reference mark
has already been traversed, the corresponding bit is set in W1032/W1116
and the reference mark is traversed again. The same constraints apply as
when traversing the reference mark for the first time.
 An axis cannot be started for referencing until all other axes are in position.
Note
The direction of traverse should be defined in the module only in
exceptional cases. Since the reference end positions are not considered in
this case, the limits of the traverse range may be violated.