Mitsubishi Electric M700V Series Programming Manual page 473

13. Program Support Functions
Coordinate system
(1) By issuing the 3-dimensional coordinate conversion command, a new coordinate system
(G68.1 program coordinate system) will be created on the local coordinate system.
(2) The coordinate system for the 3-dimensional coordinate conversion rotation center
coordinates is the local coordinate system. Thus, these coordinate systems are affected by the
following coordinate system offset and coordinate system shift amount.
• Local coordinate system offset issued with G52 command
• G92 shift amount issued with G92 command
• Coordinate system offset corresponding to workpiece coordinate system selected with
command
• External workpiece coordinate offset
• Manual interruption amount or manual feed amount when manual ABS is OFF
(3) If 3-dimensional coordinate conversion is commanded again during the 3-dimensional
coordinate conversion modal, a G68.1 program coordinate system is created on the current
G68.1 program coordinate system, and is used as a new G68.1 program coordinate system.
(4) The local coordinate system cannot be created (G52) on the G68.1 program coordinate
system. (If G52 is issued, the program error (P921) will occur.)
(5) G68.1 program coordinate system can be reset either by G69.1 command or reset inputting.
(Exclude reset 1 when "0" is set to the parameter "#1151 rsint".)
Rotation angle
(1) For the rotation angle, the counterclockwise direction looking at the rotation center from the
plus direction of the rotation center axis is the plus (+) direction.
(2) The rotation angle command unit with no decimal point depends on the parameter "#1078
Decpt" (Decimal point type 2).
(3) If the rotation angle is omitted, the rotation angle will be handled as 0°.
Rotation center coordinate
(1) The G68.1 rotation center coordinate system is commanded with the local coordinate system
(G68.1 program coordinate system during the 3-dimensional coordinate conversion modal).
(2) The rotation center coordinate designation is handled as an absolute value designation
whether or not an absolute/incremental modal (G90/G91) is currently being executed.
(3) If the rotation center coordinate is omitted, it will be handled as if the zero point of the current
local coordinate (G68.1 program coordinate system during the 3-dimensional coordinate
conversion modal) is designated for the omitted address's axis. (The same as when "0" is just
set.)
13.23 3-dimensional Coordinate Conversion; G68.1/G69.1
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