User:

Dp-apo. Is already in 0   ( Is there any difference between dp-apo and dp-apo. ?

Also please clarify to me : Is there difference between dp-spo and dp-spo.  ?

CNCmakers Support:

dp-apo   Absolute position low order digits of the 1st encoder

dp-apo.   Absolute position high order digits of the 1st encoder

dp-apo   Absolute position low order digits of the 2nd encoder

dp-apo.   Absolute position high order digits of the 2nd encoder

Detail you can refer to GS spindle manual at page 111 and page 112.