
A-79364E
Title
Draw
No.
Ed. Date Design Description
Date Jan.07.’04 Design. Apprv.
3/13
Page
FANUC Series 30i-MODEL A
Linear scale with distance-coded
reference marks
serial
- Procedure for reference position establishment
through manual operation
(1) Select the JOG mode, and set the manual reference position return
selection signal ZRN to "1".
(2) Set a direction selection signal(+J1,-J1,+J2,-J2,…) for a target axis.
(3) The axis is fed at a constant low speed (reference position return FL
feedrate specified by parameter (No.1425) setting).
(4) When the absolute position of linear scale with distance-coded reference
marks (serial) is detected, the axis stops. Then the absolute position of
CNC is calculated and reference position establishment signal
(ZRF1,ZRF2,ZRF3,…) turns to "1".
The timing chart for this procedures is given below.
CNC
Servo
Amp
Separate
Detector
Interface
Unit
Table
High
Resolution
Serial Output
Circuit C
Full Closed S
stem
Linear scale with distance-coded
reference marks (serial type)
Max. 30m
FL rate
Fig.3 Timing chart for reference position establishment
JOG
ZRN
+J1
Reference mark
ZRF1
Feedrate
Fig.2 Connection image for Full Closed System