Mitsubishi Electric C70 Setup Manual page 541

MITSUBISHI CNC
Appendix 2 Explanation of Alarms
P48 Restart pos return incomplete
Details
A travel command was issued before the execution of the block that had been restart-searched.
Remedy
- Carry out program restart again.
Travel command cannot be executed before the execution of the block that has been restart-
searched.
P60 OVER CMP. LENG.
Details
The commanded movement distance is excessive (over 2
Remedy
- Correct the command range for the axis address.
P62 F-CMD. NOTHING
Details
- No feed rate command has been issued.
- There is no F command in the cylindrical interpolation or polar coordinate interpolation immediately
after the G95 mode is commanded.
Remedy
- The default movement modal command at power ON is G01. This causes the machine to move
without a G01 command if a movement command is issued in the program, and an alarm results.
Use an F command to specify the feed rate.
- Specify F with a thread lead command.
P65 No G05P3 SPEC
Details
Remedy
- Check whether the specifications are provided for the high-speed mode III.
P70 ARC ERROR
Details
- There is an error in the arc start and end points as well as in the arc center.
- The difference of the involute curve through the start point and the end point is large.
- When arc was commanded, one of the two axes configuring the arc plane was a scaling valid axis.
Remedy
- Correct the numerical values of the addresses that specify the start and end points, arc center as
well as the radius in the program.
- Correct the "+" and "-" directions of the address numerical values.
- Check for the scaling valid axis.
P71 ARC CENTER
Details
- An arc center cannot be obtained in R-specified circular interpolation.
- A curvature center of the involute curve cannot be obtained.
Remedy
- Correct the numerical values of the addresses in the program.
- Correct the start and end points if they are inside of the base circle for involute interpolation. When
carrying out tool radius compensation, make sure that the start and end points after compensation
will not be inside of the base circle for involute interpolation.
- Correct the start and end points if they are at an even distance from the center of the base circle for
involute interpolation.
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