Module 9220 Renewed Traversing Of The Reference Marks; Servo-Controlled Spindles - HEIDENHAIN iTNC 530 Technical Manual

Renewed
traversing of the
reference marks
February 2002

Module 9220 Renewed traversing of the reference marks

With this module you start an NC or PLC axis or a servo-controlled spindle to
traverse 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:
n
The sequence of functions (MP1350.x) and the velocity for leaving the
reference end position (MP1331.x) are defined by machine parameter.
n
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.
Note
The direction of traverse should be defined in the module only in
exceptional cases. Since the reference end position is not considered in
this case, the limits of the traverse range may be violated.
n
If an axis is started for reference point traverse although the reference mark
has already been traversed, the corresponding bit is set in W1032 and the
reference mark is traversed again. The same constraints apply as for
traversing the reference mark the first time.
n
An axis cannot be started for reference mark traverse until all axes are in
position.

Servo-controlled spindles:

n
The speed for traversing the reference mark is defined in the module.
n
The spindle must be started from a standstill to traverse the reference mark.
n
If the spindle is started for reference mark traverse, marker M4018 is set.
Call:
PS B/W/D/K <>Axis/spindle>
0 to 8: Axes 1 to 9
15: Spindle
PS B/W/D/K <>Feed rate/shaft speed>
0: Feed rate MP1330.x
>0: Feed rate in mm/min or shaft speed in 1/1000 rpm
PS B/W/D/K <>Direction of traverse>
–1: Negative direction
0: Direction from MP1320.x
1: Positive direction
CM 9220
PL B/W/D <>Error code>
0: Reference mark traverse is commanded
1: Axis does not exist or is not a servo-controlled spindle
2: Inadmissible values for the feed rate / direction
4: Reference traverse not possible because reference
traverse already started
5: Axis is already being positioned or the spindle is in motion
6: Other axis is already being positioned
8: Programmed axis not in closed loop
Reference Marks 6 – 103