Linear
XL-80 Hardware
XL-80 Applications
Angular
Straightness
XL80 laser system 56www.renishaw.com/xl80
Alarm conditions
The alarm lines will go active (ALARMOUT high, /ALARMOUT low) and latch
in the following situations:
• The XL laser internal counter allows a movement of more than ±169�9 m
(231 × 79 nm)
• A resolution of 10 nm is selected and the speed is greater than 0�2 m/s
• A resolution of 80 nm is selected and the speed is greater than 1�6 m/s
• The laser beam is broken (beam break)
Once set, the error line will remain active until a clear error signal has been
issued on pin 16 as shown opposite�
Figure 5 Electrical interface for clear error / datum�
Open
Closed
Active pulse width > 5 ms
Active edge
Switch bounce < 20 ms will be ignored
Datum input Pin 16
Datum input protected
to ± 12 V DC
TTL
10 K
0V
+3.3 V
XL-80 Hardware
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