
B-63783EN-1/01 4.REFERENCE POSITION ESTABLISHMENT
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4.5 2ND REFERENCE POSITION RETURN/3RD, 4TH
REFERENCE POSITION RETURN
General
The G30 command positions the tool to the 2nd, 3rd, or 4th reference
position, via the specified intermediate point, along the specified axis.
Then, it sets the completion signal for 2nd, 3rd, or 4th reference
position return to 1.
The 2nd, 3rd, or 4th reference position must be set in parameter No.
1241, 1242, or 1243 with coordinates in the machine coordinate system,
before issuing the G30 command.
The tool moves to the intermediate point or 2nd, 3rd, or 4th reference
position at the rapid traverse rate.
Return to the 2nd, 3rd, or 4th reference position can be performed only
after the reference position has been established.
Signal
Second reference position return end signals ZP21<F64#1>, ZP22<F68#1>, ...
Third reference position return end signals ZP31<F64#4>, ZP32<F68#4>, ...
Fourth reference position return end signals ZP41<F64#5>, ZP42<F68#5>, ...
[Classification] Output signal
[Function] The second, third, and fourth reference position end signals report the
tool is at the second, third, and fourth reference positions on a
controlled axis, respectively. These signals are provided for axes in a
one-to -one correspondence. A numeric character appended to the end
of a signal represents a controlled axis number, and a numeric character
immediately following ZP represents a reference position number.
Z P x y
x : 2 Second reference position return
3 Third reference position return
4 Fourth reference position return
y : 1 Return end signal for the first axis
2 Return end signal for the second axis
3 Return end signal for the third axis
: :
[Output condition] These signals turn to "1" when:
- The second, third, or fourth reference position return (G30) is
completed, and the current position is in the in-position area.
These signals turn to "0" when:
- The tool moved from the reference position.
- An emergency stop is applied.
- A servo alarm is raised.