HUST CNC H6D-T Manual
7 - 50
Fig 7.9
MCM#850 System Reserved
851. Segment Length for Pitch Error Compensation, X-axis.
852. Segment Length for Pitch Error Compensation, Y-axis.
853. Segment Length for Pitch Error Compensation, Z-axis.
854. Segment Length for Pitch Error Compensation, A-axis.
855. Segment Length for Pitch Error Compensation, B-axis.
856. Segment Length for Pitch Error Compensation, C-axis.
Format= . , Default=0, Unit=mm
Axis
Corresponding MCM# for Segment
Length
Segment Length
Max. Number of
Segment
X MCM# 861 ~ 940 20 ~ 480 mm 80
Y MCM# 941 ~ 1020 20 ~ 480 mm 80
Z MCM# 1021 ~ 1100 20 ~ 480 mm 80
A MCM# 1101 ~ 1180 20 ~ 480 mm 80
B MCM# 1181 ~ 1260 20 ~ 480 mm 80
C MCM# 1261 ~ 1340 20 ~ 480 mm 80
1. Segment length is the total length of ball-screw divided by the number of
segment.
Fig7.10
Ex:
If you want to divide the ball-screw on X-axis, which is 1 meter in length,
into 10 segments, the segment length is 1000.00/10=100.00mm. This 100.00
mm will be stored in MCM# 851.(Each compensation of them is set by
MCM#861~#940)
2. If the average segment length is less than 20 mm, use 20 mm.
3. When doing compensation, HUST H6D/H9D controller will further divide
each segment into 8 sections. The amount of compensation for each section is
equal to the whole number, in m, of 1/8 of the amount in MCM #861~#940.
The remainder will be added to the next section.
Ex:
Machine HOME
Coordinate 0
Coordinate -100.000 Coordinate 100.000
MCM 841 = 1
Positive
compensation
MCM 841 = -1
Negative
compensation
1000 mm
100mm