Yaskawa MotionWorks IEC Hardware - Manual (Page 82)

MotionWorks IEC Hardware Configuration – 2013-03-26 79
1.10 External Encoders
Option cards LIO-01, LIO-02, and LIO-06 have an encoder input available
for use with the PLCopen function blocks. When any of these cards are
configured, external encoder functionality is available.
To use the encoder, check the 'Enable External Encoder' selection and
identify the logical axis number. Use the logical axis number in the IEC
application as the AXIS_REF.AxisNum value when referring to the external
encoder axis. Changes to the user unit parameters will not take effect until
power is cycled.