Rockwell Automation GMLC Reference Manual - Manual (Page 527)

Publication GMLC-5.2 - November 1999
490 Motion Variables
The registration distance is the difference between the most recent hard or
soft registration position of the axis, and the previous registration
position. The registration error is returned in the position units of the
corresponding master axis of the position-lock cam for relative auto-
correction, and in the position units of the corresponding registering axis
for relative ratioed auto-correction.
PCAM Average Registration Error
PCAM_average_registration_error is the arithmetic average of the last ten
registration event’s PCAM_registration_error values, for a position-lock
cam slave axis with auto-correction enabled.
In the Tag Explorer, select both Axis System Variables and the desired
axis, then select PCAM_average_registration_error in the Tag Window.
Although you must select a slave axis in the Tag Explorer:
The PCAM_average_registration_error value is
returned in position units of the corresponding:
For:
Master axis of the position-lock cam Absolute or relative auto-
correction.
Registering axis Absolute ratioed or relative ratioed
auto-correction.
Registration
Position ∑
Previous
Registration
Position
Registration
Distance
+
–
∑
+
–
Nominal
Length
Registration
Error