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15.2 Display for Ensuring Safety
15.2.1 NC Warning
M720VW
M system
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L system
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The warnings which are output by the NC system are listed below. When one of these warnings has
occurred, a warning number is output to the PLC and a description of the warning appears on the screen.
Operation can be continued without taking further action.
Type of warning
Servo warning
The servo warning is displayed.
Spindle warning
The spindle warning is displayed.
System warning
The system warning is displayed. (State such as temperature rise, battery voltage low, etc.)
Absolute position
A warning in the absolute position detection system is displayed.
warning
Auxiliary axis warning
The auxiliary axis warning is displayed.
15.2.2 NC Alarm
M720VW
M system
○
L system
○
The alarms which are output by the NC system are listed below. When one of these alarms has occurred, an
alarm number is output to the PLC, and a description of the alarm appears on the screen. Operation cannot
be continued without taking remedial action.
Type of alarm
Operation alarm
Servo alarm
Spindle alarm
MCP alarm
System alarm
Absolute position detection system
alarm
Auxiliary axis alarm
Computer link error
User PLC alarm
Program error
Network service error
M730VW
M750VW
M720VS
○
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M730VW
M750VW
M720VS
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○
This alarm occurring due to incorrect operation by the operator during NC operation and that by
machine trouble are displayed.
This alarm describes errors in the servo system such as the servo drive unit motor and encoder.
This alarm describes errors in the spindle system such as the spindle drive unit motor and
encoder.
An error has occurred in the drive unit and other interfaces.
This alarm is displayed on the screen with the register at the time when the error occurred if the
system stops due to a system error.
An alarm in the absolute position detection system is displayed.
The auxiliary axis alarm is displayed.
The computer link alarm is displayed.
The user PLC alarm is displayed.
This alarm occur during automatic operation, and the cause of this alarm is mainly program errors
which occur, for instance, when mistakes have been made in the preparation of the machining
programs or when programs which conform to the specification have not been prepared.
The network service alarm is displayed.
M700V Series Specifications Manual
M730VS
M750VS
○
○
○
○
○
○
Description
M730VS
M750VS
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Description
15 Safety and Maintenance
III - 331
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