Rockwell Automation 8520 9/Series CNC Lathe - Manual (Page 336)

Overtravels and Programmable Zones
Chapter 12
12-8
Values for programmable zone 3 are entered either in the programmable
zone table (described on page NO TAG) or through a G22 program block.
A maximum and a minimum coordinate value (in the machine coordinate
system) are assigned for each axis. The resulting coordinates define the
boundaries for programmable zone 3.
Figure 12.6
Area Defining Programmable Zone 3
Inside or outside border of
Programmable Zone 3
as defined by minimum
and maximum axis values
X
Z
Max Z
value
Min Z
value
Min X
value
Max X
value
Machine
coordinate
zero
Tool tip can not
exit if zone is activated
while tool is inside zone.
Tool tip can not enter if
zone is activated while
tool is outside zone.
Unlike the software overtravels and programmable zone 2, programmable
zone 3 can define either an area that the cutting tool can not exit or an area
that the cutting tool can not enter. This is determined by the current tool
location when programmable zone 3 is made active.
The software overtravels: define an area that the cutting tool may not
exit if the tool is currently inside the zone when the zone is activated.
Programmable Zone 3: defines an area that the cutting tool cannot enter
if the tool is outside the zone when activated or: defines an area that the
cutting tool cannot exit if the tool is inside the zone when activated.