lcec_conf exited without becoming ready

Take the time to read the cia402.comp source and example. I was wrong, cia492.comp includes a pin to select PV (velocity) mode which is what you want. 

I'd probably edit the name in your XML to be S0 instead of D1. this will make more sense when assiging pins to spindle.0
There are pins for target_velocity and actual_velocity (encoder feedback) so you are getting close. I think that your spindle speed-cmd pin should map to target_velocity and be sure the encoder is properly scaled.
I'm not sure how to map spindle.0.on to enable the motor.
spindle at speed would use the near component between  target_velocity and actual_velocity
to capture a long list of pins you can add > pins.txt to the show pin command to write output to a file