Rockwell Automation 1771-DE Absolute Encoder Module User Manual - Manual (Page 59)

Appendix B
BĆ6
During the next scan the module reads position 032 and turns the output
on.
In this case you could program presets of 030 and 045 with the
understanding that the change of output could occur a few increments
after those positions.
Hardware RC filtering in the module input circuitry is designed to
attenuate high frequency noise spikes that may pass through the opto-
isolators. The maximum practical input frequency to the module input
terminals is limited to 50KHz.