B–63682EN/01
10. TOOL FUNCTIONS
NC FUNCTION
65
Selection of tools can be done by commanding tool numbers with an
8–digit numeral after address T. The 8–bit numeral is output to PMC in
a 32–bit binary code. This code is kept till the next T code is commanded.
Maximum input digits are set by parameters.
CAUTION
1 The T–code must be issued in positioning mode (G00).
2 A program must contain this T–code in a block in which
press is specified for the first time or any preceding block.
If a T–code is not issued, a press start signal will not be
output, and therefore the program will not advance to the
next block.
The CNC can control the turret axis (T–axis) for tool indexing as specified
by a parameter. This function selects a tool by issuing a T–code and
positioning the turret at a tool position specified on the tool registration
menu, where up to 136 tools can be registered. The T–code for T–axis
control consists of one to four digits.
Use of this function can reduce the tool replacement time largely, because
it supersedes tool replacement on the machine side by using T–axis
positioning.
T–codes can be ignored. An external signal is used to determine whether
to ignore the T–code. Once it is specified to ignore T–codes, the program
operates exactly as if it contained no T–code. This function can be used,
for example, to check the program by marking on a workpiece with a
marking tool.
10.1
T CODE OUTPUT
10.2
T–AXIS CONTROL
10.3
IGNORING T–CODE