
10. TOOL FUNCTIONS
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When tools are classified into several groups, average tool life (No. of
uses or time) is designated for each group. Whenever a tool is used, the
usage time is subtracted from the tool life; when the tool life expires, the
next tool in the group is selected. The tool sequence within a group is
arranged in advance.
The end of a tool’s life is reported by tool change signal TLCH or
individual tool change signal TLCHI. Tool change signal TLCH is set to
1 at the end of the life of the last tool of a group. Individual tool change
signal TLCHI is set to 1 at the end of the life of the current tool.
[Classification] Output signal
[Function] Reports the end of the life of the last tool of a group.
[Output condition] The signal is set to 1 when:
· The life of the last tool of a group ends, after tool change has been
performed each time the end of the life of each tool in a group is
detected.
The signal is set to 0 when:
· Tool–change reset is completed for all groups in which no available
tools remain.
NOTE
The TLCH signal turns to “1” when the CNC is reset by M02
or M30, for instance after the tool life, based on the
frequency of times used, is reached. When tool life is
specified by usage time, TLCH turns to “1” when the tool life
limit is reached. The signal will change during machine
operation, but machining will continue until the end of the
program.
[Classification] Input signal
[Function] Clears all executable data, including the life count of the group, *, and @.
To clear the data, specify a group number by tool group number selection
signal after replacing the worn–out tools that are displayed on the CRT.
The data can also be cleared from the MDI.
10.3
TOOL LIFE
MANAGEMENT
General
Signal
Tool change signal
TLCH <F064#0>
Tool change reset signal
TLRST <G048#7>