Yaskawa YASNAC PC NC Programming Manual - Manual (Page 134)

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YASNAC PCNC Programming Manual Chapter 3: Movement Control Commands
3.5.2 Tool Function (T Function)
The tool function has two command designation types as T2-digit commands and T4-digit com-
mands.
(1) T2-digit Commands
A tool number is specified by a 2-digit number following address T (Too). In a T com-
mand, leading zeros may be omitted.
• T commands are modal and, once a T command is executed, it remains valid until
another T command: specified next.
• T commands are normally used to select the tool number of the tool to be selected next
by the automatic tool changer (ATC). A T command can be specified independent of
the G and H or D code that is used for tool length and tool radius offset of the presently
selected tool.
• The range of tool numbers that can be specified with address T varies with each
machine. For details, refer to the instruction manuals published by the machine tool
builder. If a T code is specified with axis move commands in the same block, whether
the T command is executed with the axis move commands simultaneously or it is exe-
cuted after the completion of the axis move commands varies with each machine. For
details, refer to the instruction manuals published by the machine tool builder.
(2) T4-digit Command*
A tool number is specified by a 4-digit number following address T (Toooo). In a T com-
mand, leading zeros maybe omitted. In comparison to the T2-digit commands, only the
number of digits is increased and functions and other details are the same as T2-digit com-
mands.