Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 262)

Section 5A
9/440 Resolver--based CNC/Drive System
5A-16
The 9/440 resolver--based control supports:
Feedback Device Additional hardware
Allen-Bradley 845H series differential encoders ----
Sony Magnascale model GF-45E Board-type detector model MD10-FR
Heidenhain Model 704 External interpolation and digitizing
model EXE602 D/5-F
Futaba Pulscale model FM45NY PCB interface Module model CZ0180
with cable PCB020EA
Other feedback devices can be compatible if they comply with the
specifications listed in Table 5A.C. Refer to the 9/Series CNC AMP
Reference Manual, publication 8520-6.4, for more information.
This manual is written under the assumption that your system is using the
Allen-Bradley 845H series differential encoder. If you are using some
other feedback device such as a linear scale, an application note is
available through the Allen-Bradley CNC Commercial Engineering
Department bulletin board at (440) 646-3963. For more information about
linear scales, refer to the Home Parameters chapter in your AMP reference
manual.
The following table lists feedback specifications for a differential encoder
however, this information can be interpreted to select an appropriate linear
scale.