System information

SECTION FOUR - PREPARATORY FUNCTIONS (G CODES)
H offsets from the tool table
H01 = 1.5
H02 = -.5
H03 = -1.25
H04 = 5
Various program lines and results
G17 G43 H1
G90 Z0 Z moves to 1.5 (from home)
Z1 H3 Z moves to -.25 (from home)
G44 H3
Z0 Z moves to 1.25 (from home)
H4
Z0 Z moves to -5 (from home)
G19 G43 H2
X0 X moves to -.5 (from home)
H0
X0 X moves to 0 (from home)
G49 X0 Z0 Z moves to 0 and X moves to 0 (from home)
G90 and G91 modes have no bearing on how the H offsets are added/subtracted to the final axis
position.
Cancel scaling (G50) Set scaling (G51)
Scaling can be commanded at any time during a program by using the G51 command.
Command format:
G51 I____ J____ K____ X____ Y____ Z____
I, J, K are the scaling center. If I, J, K are not specified in the G51 line, the scaling center will
default to the last center used. The scaling center is set to 0 at the start of each program and after
a G50.
X, Y, Z are the scale factors for each axis. The range of each scale factor is ±999.9999 to
±000.0001. The scale factors, once set, remain in effect until changed or canceled by a G50. At
the start of each program all scale factors are set to 1.
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