
10.TOOL FUNCTION B-63783EN-1/01
- 986 -
Tool life count restart M code
With the count-based tool life count system, when the tool life count
restart M code is specified and the life of at least one tool group has
expired, the tool change signal is output. When a tool group command
(T code) is specified after the tool life count restart M code is specified,
a tool whose life has not expired is selected from the group. Then, the
life count is incremented by 1 with the next tool change command
(M06). Thus, tool life count is enabled with a command other than the
first tool change command (M06) after the control unit status is
changed from the reset state to the automatic operation start state.
Specify the tool life count restart M code using parameter No. 7442.
Signal
Tool change signal TLCHA<F007#6>
[Classification] Output signal
[Function] Posts that all the tools of a group have reached the end of their service
lives. Generally, upon receiving this signal, the PMC lights an
indicator on the machine operator's panel, asking the operator to
change the tools.
[Output condition] This signal is set to 1 when:
- All the tools of a group have reached the ends of their service
lives.
If time is specified for the life count type, this signal is set to 1
immediately when the life of the last tool in a group has expired.
If frequency is specified as the life count type, this signal is set to
1 when the control unit is reset by a command such as M02 or
M30, or if an M code for restarting tool life count is specified after
the service life of the last tool in a group has expired.
This signal is set to 0 when:
- Every group has tools whose lives have not yet expired.
When this signal is 1, the tool change reset signal TLRST is issued
or an MDI operation is performed from the PMC to notify the
CNC that tool change has been performed for all those groups
whose service lives have expired. Then, this signal is set to 0.
Tool change reset signal TLRST<G010#7>
[Classification] Input signal
[Function] Notifies the control unit that all the tools of a group, which have
already reached the ends of their service lives, have been replaced with
new tools. Before inputting this signal, input the tool group signal
(TL1 to TL256) to notify the control unit of the target group for tool
replacement. By setting bit 4 (RAG) of parameter No. 7400 to 1, the
replacement of all registered groups with new tools can be posted
without inputting a tool group number.
[Operation] When this signal status changes from 0 to 1, the control unit operates as
follows:
- When the service lives of all the tools of a group specified by the
tool group signal (TL1 to TL512) have already been reached, the
relevant information is cleared. Therefore, if this group number is