
A-79357E
Title
Draw
No.
Ed. Date Design Description
Date Jan.06.’04 Desig. Apprv.
3/5
Sheet
FANUC Series 30i-MODEL A
Extended External Machine Zero Point
Shift
• Relationship with the error compensation functions
This function is superposed on error compensation functions such as the
pitch error compensation function and straightness compensation function.
• Multi-path control
In multi-path control, the locations of the R area are used in ascending order
of axis numbers in the paths as shown in the example below.
Example) When, in parameter No. 1280, 100 is set for path 1 and 200 is set
for path 2
• Multi-path PMC
With a multi-path PMC, the PMC R area allocated to each path is used.
Example) When the first PMC is assigned to path 1, and the second PMC
is assigned to paths 2 and 3, the R area of the first PMC is assigned to
shift values for path 1, and the R area of the second PMC is assigned to
shift values for paths 2 and 3.
CNC PMC
Path 1
No.1280 = 100
1st PMC
R100 or later
Path 2
No.1280 = 100
Path 3
No.1280 = 200
2nd PMC
R100 or later
R200 or later
Axis number Path (Prm.981) Shift value of path 1
1 1 R100—101
2 2 R101—102
3 2 R103—104
4 1 Shift value of path 2
5 2 R200—201
6 1 R201—202
R203—204