Mitsubishi Electric M800W Series, Connection And Set Up Manual

Page: 525 / 702

M800W/M80W Series Connection and Setup Manual
25 Setting the Position Detection System
486 IB-1501268-K
The zero point initial setting is now complete. After initializing all axes, turn the power OFF and ON.
- (6) to (10) in this diagram indicate steps of the operation procedure.
(Note 1) To change just the basic machine coordinate zero point, set "#0 Absolute posn set" and "#2 Zero-P", and then
turn the power OFF and ON.
(Note 2) If aligning the axis on the marked point is attempted without passing the grip point once after turning the power
ON, the operation message "Not passed on grid" will appear. Return to a point before the last grid, and then
repeat from step of aligning the axis on the marked point.
(Note 3) If the first grid point is covered by the grid mask (#2028 grmask) as a result of return to the electric basic
position in the step (8), the axis stops at the next grid point.
Note that reference position shift amount (#2027 G28sft) is invalid.
(Note 4) Confirm the "absdir" setting if the machine does not move in the direction of "#2050 absdir" in the step (8). The
machine will move only in the positive direction when set to "0", and the negative direction when set to "1".
(10) Set the "Zero-P".
Move the cursor to "Zero-P" with the [
↑
] and [
↓
] keys. Input the distance
from the basic machine coordinate
zero point to the grid point
immediately preceding the basic
position in the input area then press
[INPUT].
Setting "Zero-P"
When the machine is set up for the first time or when the grid point has
changed because of replacement of motor and encoder, set the distance
from the basic machine coordinate system zero point from the grid point
(electric basic position) to "Zero-P". (When you set mechanical reference
position as basic machine coordinate system zero point, set the display
value of "Machine end" to "Zero-P".)
When you perform zero point initial setting due to the disappearance of the
absolute position, the grid point (electric basic position) does not change;
therefore, there is no need to set "Zero-P" again.
(6)
(8)
(10)
(7)
(9)
Grid point
(electric basic position)
Zero return parameter
"#2037 G53ofs"
Start point
Basic machine coordinate
system zero point Reference
position
"#2 Zero-P" (#2059 zerbas=1)
Mechanical basic
position
"Machine end"