
13.PROGRAM CONFIGURATION PROGRAMMING B-63944EN/02
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13.1 PROGRAM COMPONENTS OTHER THAN PROGRAM
SECTIONS
This section describes program components other than program
sections. See II-13.2 for a program section.
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O0001 ;
M30 ;
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(COMMENT)
Pro
ram code start
Program section
Leader section
Program start
Comment section
Program code end
Fig. 13.1 (a) Program configuration
Explanation
- Program code start
The program code start indicates the start of a file that contains NC
programs.
The mark is not required when programs are entered using SYSTEM
P or ordinary personal computers. The mark is not displayed on the
screen. However, if the file is output, the mark is automatically output
at the start of the file.
Table 13.1 (a) Code of a program code start
Name ISO code EIA code
Notation in this
manual
Program code start % ER %
- Leader section
Data entered before the programs in a file constitutes a leader section.
When machining is started, the label skip state is usually set by
turning on the power or resetting the system. In the label skip state, all
information is ignored until the first end-of-block code is read.
When a file is read into the CNC unit from an I/O device, leader
sections are skipped by the label skip function.
A leader section generally contains information such as a file header.
When a leader section is skipped, even a TV parity check is not made.
So a leader section can contain any codes except the EOB code.