Mitsubishi Electric MELDAS C6 Programming Manual page 340

Appendix 2. Program Error
Error No.
P421 PRAM IN ERROR
• The specified parameter number or set
data is illegal.
• An illegal G command address was input
in parameter input mode.
• A parameter input command was input
during fixed-cycle modal or nose R
compensation.
P430 AXIS NOT RET.
• A command was issued to move an axis,
which has not returned to the reference
point, away from that reference point.
• A command was issued to an axis
removal axis.
P431 NO 2ND REF.
A command for second, third or fourth
reference point return was issued though
there are no such command specifications.
P434 COLLATION ERR
One of the axes did not return to the start
position when the origin point collate
command (G27) was executed.
P435 G27/M ERROR
An M command was issued simultaneously
in the G27 command block.
P436 G29/M ERROR
An M command was issued simultaneously
in the G29 command block.
P450 NO CHUCK BARR.
The chuck barrier on command (G22) was
specified although the chuck barrier was
undefined in the specification.
P460 TAPE I/O ERROR
An error has arisen in the tape reader or,
alternatively, in the printer during macro
printing.
P461 FILEI/O ERROR
A file of the machining program cannot be
read.
P600 NO AUTO TLM
An automatic tool length measurement
command (G37) was executed though
there are no such command specifications.
P601 NO SKIP SPEC
A skip command (G31) was issued though
there are no such command specifications.
Details
332
Remedy
• Check the program.
• Execute reference point return manually.
• The command was issued to an axis for
which axis removal is validated so invalidate
axis removal.
• Check the specifications.
• Check the program.
• 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.
• 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.
• Check the specifications.
• Check the power and cable for the connected
device.
• Check the input/output unit parameters.
• During memory operation, the program saved
in the memory may be corrupted. Output all of
the programs and tool data, etc., once, and
format the memory.
• Check the specifications.
• Check the specifications.