
A-78656E/01 FANUC Series 16i/18i-TB Compound Machining Function
49/127
Nov.14.2001 Edition 1
3.1
Tool selection, tool offset
When T code is commanded, the code signals and strobe signal are to
be output for a machine to select a tool.
T code command for standard T-system control specifies a tool offset
and validates it at the same time as well as tool selection.
Therefore, this standard type specification is not suitable for an
automatic tool changer usually used for a machining center.
Compound machine function has a parameter to select whether this
standard one or M-system tool selection type even in turning mode.
3.1.1
T code command
The parameter setting of TM6(No.13001#0) = 1 allows you to change
tools not by T code only but M06 code.
The first 2 digits(max. 6 digits) of T code command show tool
number and the last 2 digits show tool offset number.
Too**
oo : Tool number
Output to PMC(F0026#0 - F0029#7)
Used for preparation of the next tool
** : Tool offset number
•
T code should be used for indexing tool and M06 for starting to
change tools
•
Movement for tool offset does not start only by T code command.
It requires G code to activate
•
When parameter TM6 is set to “0”, tool change is done with T
code.
•
When parameter TM6 is set to “0”, parameter 13001#1(TO2)
must be set to “1” tool change is done with T code. As for TO2,
please see the next chapter.
•
The thing used cannot be done by switching standard T code
command and this method at any time.
•
The tool changing command is the same as it of standard M
control.