GSK GSK988TA, Manual

Page: 79 / 531

Chapter 2 G Commands
61
Ⅰ
Programming
absolute coordinates of current position to create the workpiece coordinate
system (called as the floating coordinate system). After the workpiece
coordinate system is created, the absolute coordinate programming inputs
the coordinate value in the coordinate system till the new workpiece
coordinate system in G50 is created.
Command format: G50 IP__ ；
Command explanation: G50 is non-modal G;
IP_: when the system uses the absolute code, it specifies the new absolute coordinate position
of the current point in the coordinate system; when the system uses the incremental code,
after its executes G50, the absolute coordinate value of the current point is equal to the
sum between the absolute coordinate value before execution and the coordinate
incremental value.
Note 1: After G50 changes the workpiece coordinate system, other workpiece coordinate systems also
perform the same offset;
Note 2: In G50, the system can omit one or all code addresses for each axis, the current coordinate value
is not input when the code value for each axis is not input. When the axis code address is omitted,
the coordinate axis which is not input keeps its pervious coordinate value;
Note 3: When G50 and G codes (G00, G01) in Group are in the same block, the system only modifies the
modal value of Group 1, and the coordinate value in the block is specified by G50;
Note 4: When the system does not set G50 offset value, it can set No. 1202 Bit(G50) to forbid G50;
Note 5: After G50 sets the coordinate system, the system must be turned off and then on, the coordinate
values set by G50 remain unchanged before power off.
Note 6: In NC program, when LGT is set the coordinate offset mode to execute the tool offset, and the
system executes T function does not execute the absolute value code, the coordinate system is
set by G50, the absolute coordinate value displayed by G50 is the one that the coordinate value
set by G50 adding the tool compensation value which is not executed. The difference between the
relative coordinates and the machine coordinates is
（
-80
，
10
）
when the system executes N4, the
difference value is caused because X100Z10 setting G50X20Z20 to create the workpiece
coordinate system offset, i.e. the user does not think over the tool offset influence when G50 is
set in NC program.
Program Absolute
coordinates
Relative
coordinates
Machine
coordinates
N1 T0100 G00 X100 Z10
X
：
100 Z
：
10 X
：
100 Z
：
10 X
：
100 Z
：
10
N2 T0101 （ No.01 tool offset
value X12 Z23
）
X ： 88 Z ： -13 X ： 100 Z ： 10 X ： 100 Z ： 10
N3 G50 X20 Z20
X
：
8 Z
：
-3 X
：
20 Z
：
20 X
：
100 Z
：
10
N4 G00 X10 Z10
X ： 10 Z ： 10 X ： 22 Z ： 33 X ： 102 Z ： 23
2.15.3 Workpiece Coordinate System Selection G54
～
G59
Command function : One of G54
～
G59 is specified, one of workpiece coordinate system 1
～
6
can be selected. After the workpiece coordinate system is specified, the
specified point in the block is in the specified workpiece till a new workpiece
coordinate system is created as Fig. 2-21. The tool positions X60.0, Z20.0