Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set - Manual (Page 155)

Editing Programs On Line
Chapter 5
5-35
To digitize an arc that is tangent at the endpoint of the previous path:
1. Press the {CIRCLE TANGNT} softkey.
When you press the {CIRCLE TANGNT} softkey, the control sets the
current wheel position as the start point of a circular move. If the
previous block was circular, a tangent to the end point of the arc is
used as the tangent point to the following block.
Important: You cannot select the {CIRCLE TANGNT} feature as the first
motion block in a part program because there is no path for the start of the
arc to be tangent to.
The screen changes to display the current wheel location in large
display characters:
STORE
END PT
EDIT &
STORE
E-STOP
DIGITIZE:
TARGET[ MM ]
R
X - 0.000
Z - 0.000
F 0.000 MMPM S 00
2. Reposition the wheel at the end point of the arc by using any of the
following methods:
Jog the Axes in manual mode
Automatically move the axes by executing a part program or MDI
program
Manually move the axes using any means as long as the encoder is
still actively recording the wheel position (see documentation
prepared by your system installer)
5.4.3
Digitizing An Arc Tangent at
End Points