Rockwell Automation 8520 9/Series CNC Lathe - Manual (Page 458)

Tool Control Functions
Chapter 20
20-2
Modern machining processes usually require a machine that is capable of
selecting different tools. Typically tools are mounted in a turret and
assigned tool numbers as illustrated in Figure 20.1. The tool length offset
data, tool tip radius data, tool wear compensation data and tool orientation
data are set in the offset table corresponding to different offset numbers
See chapter 3.
Figure 20.1
Typical Lathe Tool Turret
07
01
04
06
03
05
02
08
The selection of a tool number and an offset number for that tool is done
by programming a T-word. A T-word can be programmed at any location
in a part program.
Important: When you activate the MISCELLANEOUS FUNCTION
LOCK feature, the control displays M-, B-, S-, and T-words in the part
program with the exception of M00, M01, M02, M30, M98, and M99.
Activate this feature through the front panel screen (as described in chapter
2) or by an optional switch installed by your system installer.
20.1
T-words and Tool Length
Offsets