Mitsubishi Electric MELDAS 600M Series Instruction Manual page 395

(8) Axis with no reference point (150007 Noref)
"0" is set for the axis to carry out dog-type reference point return and the axis for absolute position
detection.
"1" is set for the axis that does not carry out reference point return during relative position
detection.
(9) Machine coordinate system offset (150008 #1_rfp)
This parameter is set when the basic machine coordinate system zero point position is to be
shifted from the reference point position.
When "0" is set, the reference point position will be the position of the basic machine coordinate
system zero point.
#1_rfp sets the reference point position from the basic machine coordinate system zero point as a
basic machine coordinate system coordinate value.
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CHAPTER 3 MAINTENANCE
3. Adjusting the Dog-Type Reference Point Return
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