Mitsubishi Electric C70 Setup Manual page 558

P990 PREPRO S/W ERR
Details
Combining commands that required pre-reading (nose R offset, corner chamfering/corner rounding,
geometric I, geometric IB, and compound type fixed cycle for turning machining) resulted in eight or
more pre-read blocks.
Remedy
- Delete some or all of the combinations of commands that require pre-reading.
C70 Setup Manual
Appendix 2.13 Program Errors (P)
541