Zero Point Return Parameters; G28Rap; G28Crp; G28Sft - Mitsubishi Electric M800 Series Manual

M800/M80/E80/C80 Series Alarm/Parameter Manual
16 Machine Parameters

16.5 Zero Point Return Parameters

#2025

G28rap

Set a rapid traverse rate for the dog type reference position return command.
This is not used for the distance-coded reference position detection.
---Setting range---
1 to 1000000 (mm/min)
#2026

G28crp

Set up the speed of approach to the reference point in the reference point return command. This speed is
attained after the system stops with deceleration by dog detection.
In the distance-coded reference position detection, the set value will be applied from the start of reference
position establishment.
(Note) The G28 approach speed unit is (10°/min) only when using the Z-phase type encoder (#1226 aux10/
bit3=1) for the spindle/C-axis reference position return type. The same unit is used for both the micrometric
and sub-micrometric specifications.
---Setting range---
1 to 60000 (mm/min)
#2027

G28sft

Set the distance from the electrical zero-point detection position to the reference position.
This is not used for the distance-coded reference position detection.
(Note 1) When "#1240 set12/bit2" is ON, a magnification (C: 10-fold, D: 100-fold and E: 1000-fold) corre-
sponding to the input setting unit ("#1003 iunit") will be applied to the setting value.
(Note 2) The sign of setting value is will be following: the direction of "#2030 dir (-) Reference position direc-
tion (-)" is plus, and the opposite direction is minus.
(Note 3) When set value is set to minus, the axis moves to electrical zero-point detection position at first and
then moves in opposite direction.
---Setting range---
-99.999 to +99.999 (mm)
#2028 grmask
Set the distance where the grid point will be ignored when near-point dog OFF signals are close to that grid
point during reference position return.
Axis speed
The grid mask is valid for one grid.
This is not used for the distance-coded reference position detection.
---Setting range---
0.000 to 99.999 (mm)
Grid
Near-point dog
Grid mask setup distance
G28 rapid traverse rate
G28 approach speed
Reference position shift distance
Grid mask amount
Position
(Detector F/B)
Electrical zero point
505 IB-1501279-H