Справочник Пользователя для Mitsubishi Electronics C64T

 

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After setting up the parameter (PR) listed in the table, turn off the NC power. To validate the 
parameter, turn on the power again. 

 

2025 G28rap  G28 rapid 

traverse 
feedrate 

Set up a rapid traverse feedrate for dog type reference 
point return command. 

1 to 1000000 
(mm/min) 

2026 G28crp  G28 

approach 
speed 

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. 

(Note)  The G28 approach speed unit is 10

°/min only 

when using the spindle/C-axis with the Z-phase 
type encoder for the reference point return type 
("#1226 aux10" bit3 = 1). 
Note that this unit is applied to both micrometric 
and sub-micrometric specifications. 

1 to 60000 
(mm/min) 

2027 G28sft  Reference 

point shift 
distance 

Set up the distance from the electrical zero-point 
detection position to the actual machine reference point 
during reference point return. 

0 to 65535 (µm) 

2028 grmask  Grid mask 

amount 

Set up a distance where the grid point is ignored when 
near-point dog OFF signals are close to that grid point 
during reference point return. 

Near-point dog

Grid mask set up distance

 

The grid mask is valid by one grid. 

0 to 65535 (µm) 
Even for the 
specifications in 
sub-micrometric 
system, set up the 
value in units of 

µ

m. 

2029  grspc 

Grid interval  Set up a detector grid interval. 

Generally, set up the value equal to the ball screw pitch.  
However, if the detector grid interval is not equal to the 
screw pitch when measured with a linear scale, set up 
the detector grid interval.  
To reduce the grid interval, use its divisors. 
To use 0.001 mm as minimum setup units, set up the 
negative value. 
Example)  Setup value 

−

1 

→ 1.000 mm (°) 

−1 → 0.001 mm (°) 

Even when the specifications in sub-micrometrics are 
used, 0.001 mm is specified for the minimum setup 
units. 

−32767 to 999 
(mm)