It looks like the outputs don't have much output current (< 7 ma) so have a hard time
driving the termination resistors on the 7I77, I would try single ended mode.
(Jumper the 7I77 for single ended mode and disconnect the /A,/B,/Z signals)
I've tried single ended... but it didn't work.
I've applied 7V tot the encoder, (from the field power) Now it looks like it is working.
In "Show Hal Configuration" the hm2_5i25.0.encoder.00.count pin shows +-2000 counts/turn. This is probably the encoders 500 pulses multiplied by 4. (I bought I read that somewhere.. the count is pulsesx4)
