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8.13.1 Using the touch probes
TS 440,TS 444,
TS 640
1536
The TS 440, TS 444 and TS 640 touch probes are activated on the rising edge
of the starting signal and deactivated on the falling edge. For safety reasons,
the touch probes are automatically switched off after 30 minutes of no activity
(no stylus deflection).
HEIDENHAIN recommends:
Set M4056 as soon as the touch probe is in the spindle. This way the touch
probe is switched on via the rising edge of the start signal.
Reset M4056 in order to switch the touch probe off. The touch probe is
switched off via the falling edge of the start signal.
As long as M4056 is set, the NC checks the ready signal of the touch probe,
and automatically triggers it anew as soon as it switches itself off. This
ensures that the touch probe is switched on as long as it is within the working
space.
If it is not possible to keep the touch probe ready, positioning motions in the
Manual and Handwheel modes of operation are interrupted with the Probe
system not ready error message. After acknowledging the error message
with the CE key, the touch probe can be freely traversed for 60 seconds in the
Manual mode of operation. The error message then appears again.
Attention
Touch-probe monitoring is not active as long as the touch probe does not
report that it is ready.
If, in an exceptional case, the touch probe must be triggered anew during a
probing cycle, the Probe system not ready error message appears, and the
cycle must be restarted from the beginning.
Note
The iTNC 530 always emits a start signal when beginning a touch probe
cycle, meaning Modules 9135 and 9136 do not need to be used for
HEIDENHAIN touch probes.
If M4056 is set and the stylus is deflected, the NC stops the machine in all
operating modes. The maximum feed rate is limited to the value specified in
MP6150. If M4056 is set and the touch probe does not provide a ready signal,
the feed-rate enabling is reset.
If you do not set M4056, the control detects a deflection of the stylus only if
a probing function has been started.
Before the probing process is started, the NC sets M4055. Before executing
the function, the NC waits until you reset M4055. This allows you to take a
break, for example, to clean the measured object with compressed air before
starting the probing process.
M4051 is set if the stylus is deflected before the probe block has been started.
If it is, the probing block start is delayed by 1 second.
HEIDENHAIN Technical Manual iTNC 530 HSCI
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