Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 270)

Section 5A
9/440 Resolver--based CNC/Drive System
5A-24
Wiring a Probe for Falling Edge Configuration
Figure 5A.10 shows a typical wiring diagram compatible with most probe
designs configured to trigger on the falling edge of the probe signal.
Figure 5A.10
Typical Wiring of a Touch Probe Configured for Falling Edge Trigger
11309-I
3
2
1
9/440 Resolver--based Control
Wiring Board
470 ohm
5V common
1000 ohm
+5 V dc
4
Probe Contact
to encoder interface