
B–64113EN–1/01
4. REFERENCE POSITION ESTABLISHMENT
245
By using optional function ”Linear scale I/F with absolute address
referenced mark”, we can use ”Linear scale I/F with absolute address
referenced mark (A/B phase)”, and ”Linear scale with distance–coded
reference marks (serial)”
The interval of each reference marks of linear scale I/F with absolute
address referenced mark (A/B phase) are variable. Accordingly, if the
interval is determined, the absolute position can be determined. The CNC
measures the interval of reference marks by axis moving of short distance
and determines the absolute position. Consequently the reference
position can be established without moving to reference position.
10.02
20.00 20.00
20.02
10.04
Reference
mark 1
Reference
mark 2 Mark 1 Mark 2 Mark 1
Fig. 4.7(a) Example of linear scale I/F with absolute address referenced
mark (A/B phase)
4.7
LINEAR SCALE I/F
WITH ABSOLUTE
ADDRESS
REFERENCED MARK
(A/B PHASE)/LINEAR
SCALE WITH
DISTANCE–CODED
REFERENCE MARKS
(SERIAL)
Outline
Linear scale I/F with
absolute address
referenced mark (A/B
phase)