Rockwell Automation 8520 9/Series CNC Lathe - Manual (Page 460)

Tool Control Functions
Chapter 20
20-4
Example 20.2
Using T -word Format #3
T2013;
This example first calls for tool number 2 to be rotated into position, then data is accessed from
the offset tables (chapter 3) for values under tool geometry offset number 13, and tool wear
offset number 13.
From these simple examples translation to the other formats should be
relatively easy. The tool number is always the digits closest to the T-word.
The maximum value that a tool number can have is determined by the
system installer in AMP.
To cancel the tool length offset, program a T-word with a geometry and
wear offset number of 0. The control does not cancel the active tool
number since a tool number of 0 is invalid. If the wear or geometry offset
number is the same as the tool number, a T-word of 0 cancels the offsets
but not the tool number.
Example 20.3
Canceling Tool Offsets (Any T-word Format)
Assume that tool number 1 is the active tool number.
T0 ;
This example cancels all offsets and keeps tool number 1 in the turret. The system installer has the
ability to force a tool change when T0 is programmed if he desire with a specific PAL program.
Refer to your system installers documentation for details.
Important: Your system installer determines in AMP whether or not all
tool length offsets are canceled when the control is reset or an M02 or M30
end of program block is read.
Important: A T-word also calls up geometry and wear radius data for use
in TTRC. See chapter 21.