Nordson Asymtek Spectrum Series Installation, Operation & Maintenance Manual page 90

c. Locate the tab (Figure 4-16) with the height sensor probe output
( ).
HS_PROBE_EXTEND
d. Click the button next to to toggle the bit ON ( ).
HS_PROBE_EXTEND 1
The height sensor probe should be in the down position.
Figure 4-16 Dispenser I/O (Outputs 0-31)
4-24 Power-Up and Testing