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Chapter 3 G Commands
165
Ⅰ
Programming
W-10; (G
→
H, X axis rapid traverse speed 0 mm/min, Z axis 100mm/min)
M30;
The system supplies 16 steps for spindle override (0%
～
150%, increment of 10%).PLC ladder
defines tune ways of spindle override and whether the actual feedrate override steps is reserved or
not after the system is switched off, which is referred by user manual from machine manufacturer
when using the system. Refer to the following functions of GSK980TDi standard PLC ladder.
The cutting feedrate can be tuned real time by the feedrate override key on the operator panel or
the external override switch, and the actual cutting feedrate is tuned at 16 steps in 0
～
150%
(increment of 10%) but it is invalid for thread cutting to tune the feedrate override. Refer to
Ⅱ
OPERATION
about
cutting feedrate override
.
Related parameters:
System parameter No.027: the upper limit value of cutting feedrate(they are the same in X, Z
direction, diameter/min in X direction);
System parameter No.029: exponential function for time constant of acceleration/deceleration
when cutting feed and manual feed;
System parameter No.030: initial (ultimate) speed of acceleration/deceleration in exponential
function when cutting feed and manual feed.
3.26. Additional Axis Function
3.26.1 Additional Axis Start
Additional axis: Y, 4
th,
5
th
. They can be set to the linear axis or rotary axis. Whether the selected
additional axis is valid is determined by the state bit parameter 187, and the axis name is changed by
data parameter 225; taking example of Y is as follows:
3.26.2 Motion of Additional Axis
1) rapidly traverse: G00 Y(V)__
2) feed motion: (G98/G99) G01 Y(V)__ F__
3) tapping: G33 Y(V)__ F(I)__
4) machine zero return: G28 Y(V)__
5) machine
2
nd
, 3
rd
, 4
th
reference point return: G30 P2(3,4) Y(V)__
6) G50 setting a coordinate system: G50 Y(V)__
7) Manual/Step/MPG feed, program zero return, manual machine zero return.
Note 1: Axis name is Y, absolute coordinate programming axis is Y, relative coordinate programming axis is V.
Axis name is C, absolute coordinate axis name is C, relative coordinate axis name is H. When axis
name is A or B, the relative coordinate programming axis name and absolute coordinate
programming axis name are the same.
Note 2: The additional axis Y does not execute X/Z interpolation motion;
Note 3: Y(V) in G00, G28 , X(U) , Z(W) are in the same block, and each rapidly traverses with their separately
specified speed;
Note 4: Y(V) in G50 , X(U) , Z(W) are in the same block;
Note 5: Y(V) in G01, X(U) , Z(W) are not in the same block, otherwise, the system alarms;
Note 6: Use the modal F of X/Z when G01 traverse speed of Y is not specified; the time constant is set by
№
29.
