5. TOOL FUNCTION (T FUNCTION)
(5)A tool a in a multiple tool holder A to another tool b in the same
multiple tool holder A
When the T command for a tool b in a multiple–tool holder A is issued
after another tool a in the same tool holder A has been selected, the
necessary T code and the corresponding TF signal are output. The
machine then returns the FIN signal. (If necessary, move the tool
holder according to the T command, and return the FIN signal after
When the FIN signal is returned, the CNC moves the C axis as
specified by the last two digits of the T code and starts indexing the
required tool b. When indexing the tool starts, the tool b indexing
signal, CMOK, is switched to 1. When the tool b has been indexed,
the MIE signal is switched to 1 and the CMOK signal is switched to
0. This completes indexing the tool b.
The T command
to T code
Motion specified by T code
Indexing the tool
D It is necessary to combine the C–axis control option to use
D When using multiple–tool control, do not issue a C–axis command.
D When using multiple–tool control, set parameter No. 3032 to 3 or 4.
To index a tool in a multiple–tool holder, specify a T code consisting
of at least three digits. To index a regular tool, specify a T code
consisting of two digits or less.
D The MIE signal, which indicates that indexing the tool in a
multiple–tool holder is complete, is switched to 1 when a tool has been
indexed. However, switching the MIE signal to 1 is synchronized with
the start of C–axis deceleration.
D When using multiple–tool control, set parameter CRM (No. 16362#5)
D Timing diagram
Cautions on using the