Appendix 1. Program Error
576
Error No.
Details
Remedy
P434 Compare
error
One of the axes did not return to the reference
position when the reference position check
command (G27) was executed.
• Check the program.
P435
G27 and M commands in a block
An M command was issued simultaneously in
the G27 command block.
• An M code command cannot be issued in a
G27 command block and so the G27
command and M code command must be
placed in separate blocks.
P436
G29 and M commands in a block
An M command was issued simultaneously in
the G29 command block.
• An M code command cannot be issued in a
G29 command block and so the G29
command and M code command must be
placed in separate blocks.
P438
G52 invalid during G54.1
A local coordinate system command was
issued during execution of the G54.1
command.
• Review the program.
P450
No spec: Chuck barrier
The chuck barrier on command (G22) was
specified although the chuck barrier was
undefined in the specification.
• Check the specification.
P451
No spec: Stroke chk bef travel
Stroke check before travel (G22/G23) was
commanded even though there is no stroke
check before travel specification.
• Check the specification.
P452
Limit before travel exists
An illegal command such as the start or end
point of the traveling axis is inside the
prohibited area or the axis passes through the
prohibited area, was detected when Stroke
check before travel (G22) was ON.
• Review the coordinate values of the axis
address commanded in the program.
P460
Tape I/O error
An error has arisen in the tape reader or‚
alternatively‚ in the printer during macro
printing.
• Check the power and cable of the connected
devices.
• Check the I/O device parameters.
P461
File I/O error
A file of the machining program cannot be
read.
IC card has not been inserted.
• In memory mode, the programs stored in
memory may have been destroyed. Output all
of the programs and tool data once and format
them.
• Ensure that the external device (including an
IC card, etc) that contains the file is mounted.
• Check the parameters for HD operation or IC
card operation.
P462
Computer link commu error
A communication error occurred during the
BTR operation.
• "L01 Computer link error" is displayed
simultaneously, so remedy the problem
according to the error No.
P480
No spec: Milling
• Milling was commanded when the milling
specifications were not provided.
• Polar coordinate interpolation was
commanded when the polar coordinate
interpolation specifications were not
provided.
• Check the specification.