
B-63943EN-1/02 4.REFERENCE POSITION ESTABLISHMENT
- 535 -
4.9 EXTENDED FUNCTION OF THE DISTANCE CODED
LINEAR SCALE INTERFACE
Overview
The distance coded linear scale interface has reference marks at
intervals that change at a constant rate. By determining the reference
mark interval, the corresponding absolute position can be deduced.
When a G00 command or a move command in jog feed is specified
for an axis for which the distance coded linear scale interface is used,
this function establishes the reference position by measuring the
reference mark intervals automatically. Therefore, after CNC
power-up, the reference position can be established without
performing reference position return operation.
Reference
mark 1
Reference
mark 2
Reference
mark 1
Reference
mark 2
Reference
mark 1
10.02
10.04
20.02
20.00
20.00
10.06
Fig. 4.9 (a) Sample distance coded linear scale interface
This function is available as an option.
To use this function, the interface option of the distance coded linear
scale interface is also required.