YASKAWA MOTIONPACK-110 Descriptive Information page 74

4.2.13 RETURN-TO-MACHINE COORDINATE SYSTEM (G53)
With Motionpack-ll0, there are two types of coordinate systems: machine coordinate system
(intrinsic coordinate system of the machine, tothe zero point of which automatic return is
easily made in accordance with Par. 3.2 "MANUAL RETURN-TO-REFERENCE
POINT"), and the absolute coordinate system (to be established by G92).
Command G53 is' programmed, as given below, to move the machine from the
current position designated in the absolute coordinate system temporarily to position X, Y,
or Z expressed in the machine coordinate system in that block only.
I (G90) G53 X..- Y... Z..-; I
NOTE
1. Program G53 only with O00 or G01 belonging to the 01 group.
2. When G53 command is given while a position offset is on, the offset is
temporarily cancelled. Generally, cancel any offset before giving a G53
command.
3. If the machine lock function is ON when a G53 command is given, the
command values that are only displayed while the machine lock
function is OFF are also displayed to the end. If the machine lock
function is switched on and off during a G53 block, correct positioning
cannot be obtained.
However, if the entire G53 block is executed in the machine lock OFF
state, correct positioning is possible even when a machine lock operation
intervenes prior to the execution.
4. Execute a G53 command by designating G90. Even if the G91 designation
is left unchanged, the values are treated as G90 values.
(Program example)
G90 G53 G00 X100. Y300. ;
Y
.... .+ tl_
"" _' % ABSOLUTE COORDINATE
REFERENCE POINT
h I x
_ MACHINE COORDINATE
ZERO POINT
Fig. 4.23
.61