Mitsubishi Electric MELDAS C6 Interface Manual page 129

B con-
Signal name
tact
—
TOOL LIFE OVER
[Function]
This signal notifies the PLC that the lives of all tools in the same group have reached (usage data ≥
life data).
Note that for tool life management I, the data is controlled with tool units.
[Operation]
<For L system tool life management I>
This signal turns ON when the usage data of the tool matches or exceeds the life data. Note that
this signal is only output, and the automatic operation of the controller, etc., will not stop.
<For L system tool life management II>
This signal turns ON when the usage data of the tool matches or exceeds the life data. Note that
this signal is only output, and the automatic operation of the NC, etc., will not stop.
The signal turns ON when:
(1) The final tool of the group current selected has reached the life (usage data ≥ life data). (Same
timing as the count up of usage data.)
(2) When "Tool change reset (TRST)" signal has been input in respect to the last tool in the
currently selected group.
(3) If a group is selected, when the lives of all tools in the group have reached the life. (Same timing
as tool function strobe 1 (TF1) signal.)
The signal turns OFF when:
(1) When the group selection has been completed. (At T command. Note that if the selected group
is a life group, the signal will remain ON.)
(2) When usage data of currently selected group is cleared. (When "Tool change reset (TRST)"
signal is input, etc.)
<For M system tool life management II>
This signal turns ON when the life of all tools in the group mounted on the spindle is reached, or
when erroneous tools are selected. Note that this signal is output only, and the automatic operation
of the control unit, etc., will not stop.
This signal turns ON when:
(1) When the usage data ≥ life data of the final tool in the group mounted on the spindle.
(Same timing as the count up of usage data)
(2) When a tool error signal is input for the final tool in the group mounted on the spindle.
(3) When the lives have been reached of all the tools in the mounted group when the tools are
mounted on the spindle.
This signal turns OFF when:
(1) When a tool from another group is mounted on the spindle.
(Note that if the life of all the tools in the mounted group is reached, the signal will remain ON.)
(2) When the usage data of the group mounted on the spindle is cleared.
(3) When the tool life management is invalidated.
[Caution]
When this signal is used in M system tool life management II, refer to the ladder cycle after the
spindle tool is changed. (This signal will not change in the same cycle in which the spindle tool was
changed.)
6. EXPLANATION OF INTERFACE SIGNALS
6.1 PLC Input Signals (Bit Type: X***)
Signal
abbreviation
TLOV
6-1-40
1st system 2nd system
X62E X6AE
3rd system
X72E