Renishaw PI 200, Руководство по установке

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2
Product description
2. SYNC and HALT debounce
The SYNC and HALT signals are debounced to prevent spurious triggers occurring
as a result of CMM or stylus vibration when the stylus makes contact with or leaves
the surface of the workpiece. A range of switch selectable timing options is provided
to suit the requirements of different types of CMM. Alternatively, the debounce may
be switched off to allow greater flexibility for the CMM’s controller to manage the
PICS signals. Refer to the section ‘configuration switches’ for more information on the
debounce options.
The ‘adaptive’ settings ensure that combinations of CMM vibration and large stylus
assemblies do not cause a false indication of probe status during the back-off move.
Referring to figure 4, it may be seen that the debounce time increases in increments
of either 20 milliseconds or 100 milliseconds until the probe signal remains below the
trigger level for one complete timing period.
When a kinematic switching probe (TP20, TP6, TP1, TP2) is connected, the debounce
times are fixed as indicated in figure 3.
Figure - Adaptive debounce
Trigger level
V
t
Debounce timer
SYNC
Debounce times set by switch 6