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2. Monitor
2.2 COORDINATE
I-32
2.2.1 Correcting the Buffer
(1) Outline
During automatic operation (memory or tape operation) or MDI operation, a block stop can be
applied, and the next command can be corrected or changed.
When a program error occurs, the block in which the error occurred can be corrected without
resetting the NC, and operation can be continued.
(Note) When running a machining program from the external memory, even if the buffer is
corrected, the revisions are not reflected on the original program.
Tape or
IC card
Memory
MDI
Preread
block
Execution
block
NC operation
Machine
control
Buffer correction
(2) Details
(a) The next command can be corrected in the following two cases.
• When single block stop is applied, and there is a machining program containing a next
command to be corrected.
• During automatic operation, there is an error (program error) in the next command's
machining program, and the program is stopped.
(b) During memory or MDI operation, not only the displayed buffer data but also the memory and
MDI contents are corrected with the buffer corrections.
(c) If an error occurs in the preread block, the block in which the error occurred can be corrected.
(Note) The buffers on the second and third pages of the COORDINATE screen cannot be
corrected.