FANUC Overtravel (OT) Alarm Codes List

FANUC Alarm Codes >> Overtravel (OT) Alarm Codes

Check out the list below for a list of OT alarm codes throwing errors in your CNC controls.

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FANUC Overtravel (OT) Alarm Codes

Alarm Code Message Description
500 OVER TRAVEL : +n Exceeded the n–th axis (axis 1–8) + side stored stroke check I.
(Parameter No.1320 or 1326 NOTE)
501 OVER TRAVEL : –n Exceeded the n–th axis (axis 1–8) – side stored stroke check I.
(Parameter No.1321 or 1327 NOTE)
502 OVER TRAVEL : +n Exceeded the n–th axis (axis 1–8) + side stored stroke check II.
(Parameter No.1322 )
503 OVER TRAVEL : –n Exceeded the n–th axis (axis 1–8) – side stored stroke check II.
(Parameter No.1323)
504 OVER TRAVEL : +n Exceeded the n–th axis (axis 1–8) + side stored stroke check III.
(Parameter No.1324 )
505 OVER TRAVEL : –n Exceeded the n–th axis (axis 1–8) – side stored stroke check III.
(Parameter No.1325 )
506 OVER TRAVEL : +n Exceeded the n–th axis (axis 1–8) + side hardware OT.
507 OVER TRAVEL : –n Exceeded the n–th axis (axis 1–8) – side hardware OT.
508 INTERFERENCE: +n
(T series (two–path control))
A tool moving in the positive direction along the n axis has fouled another
tool post.
509 INTERFERENCE: –n
(T series (two–path control))
A tool moving in the negative direction along the n axis has fouled another
tool post.
510 OVER TRAVEL: +n Alarm for stroke check prior to movement. The end point specified in a
block falls within the forbidden area defined with the stroke check in the
positive direction along the N axis. Correct the program.
511 OVER TRAVEL: –n Alarm for stroke check prior to movement. The end point specified in a
block falls within the forbidden area defined with the stroke check in the
negative direction along the N axis. Correct the program.
514 INTERFERENCE : +n The rotation area interference check function found interference on the
plus side of the n axis.
515 INTERFERENCE : –n The rotation area interference check function found interference on the
minus side of the n axis.
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Did you know this?
Setting Zero Return on Fanuc machines or any CNC Machine can sometimes be difficult. Each builder has their own way to set zero return through their own side of the control.

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