Programming instructions

NC Programming 17VRS Motion Commands, Dimension Inputs
3-17
DOK-MTC200-NC**PRO*V17-ANW1-EN-P
•
The G17 ... G20 commands form a group (G code group 2).
•
A change in the plane selection overwrites the previous plane selection
and has a modal effect.
•
At the end of the program (BST, RET, JMP, M02 and M30), upon a
control-reset, and upon a transition to manual mode (if the process pa-
rameter „Manual axis jogging causes reset“ has been set), the NC se-
lects the base coordinate system (Cxx.053 axis parameter, Axis de-
fined in tight hand coord. system as ...) and selects the working plane
that is saved there (Bxx.004 process parameter, Default interpolation
plane).
•
In the axis meaning (axis functionality) axis parameters, the machine
manufacturer must (for safety reasons) allocate the necessary axis
functionality to the axes that follow the G20 command.
•
In circle programming and with active G20, the interpolation parame-
ters I, J and K are allocated in the same way as with G17. The inter-
polation parameter (of the axis that is perpendicular to the working
plane) must not be used.
•
The constant surface speed function is related to the axis with axis
meaning X. This fact must be taken into account during free plane se-
lection if the axis meaning X is assigned via G20 to another axis.
•
Thread cutting (G33), tapping (G63, G64 and G65) and feed per
revolution (G95) are functions of the linear primary axis. Any axis - ex-
cept a rotary axis - with the axis meaning X, Y or Z may perform them.
•
The NC always processes the tool and D corrections in the axes with
axis meaning X, Y or Z.
NOTE
•
When free plane selection is activated via G20, the
controller cancels the constant surface speed function
(G96) and activates the spindle speed in rpm function
(G97)
•
Furthermore, the controller activates straight line inter-
polation (G01) when free plane selection is activated.
Please refer to the description „Free plane selection and lateral cylinder
surface machining“ in Folder 5 for further information about free plane
selection.
NC functions
Detailed description