
OPERATION
B–63504EN/01
4. AUTOMATIC OPERATION
431
During DNC operation, the program currently being executed is
displayed on the program check screen and program screen.
The number of displayed program blocks depends on the program being
executed.
Any comment enclosed between a control–out mark (() and control–in
mark ()) within a block is also displayed.
D During DNC operation, programs and macro programs stored in
memory can be called.
In program display, no more than 256 characters can be displayed.
Accordingly, character display may be truncated in the middle of a block.
In DNC operation, M198 cannot be executed. If M198 is executed, P/S
alarm No. 210 is issued.
In DNC operation, custom macros can be specified, but no repeat
instruction and branch instruction can be programmed. If a repeat
instruction or branch instruction is executed, P/S alarm No. 123 is issued.
When reserved words (such as IF, WHILE, COS, and NE) used with
custom macros in DNC operation are displayed during program display,
a blank is inserted between adjacent characters.
Example
[During DNC operation]
#102=SIN[#100] ; → #102 = S I N[#100] ;
IF[#100NE0]GOTO5 ; → I F[#100NE0] G O T O 5 ;
When control is returned from a subprogram or macro program to the
calling program during DNC operation, it becomes impossible to use a
return command (M99P****) for which a sequence number is specified.
Explanations
Limitations
D Limit on number of
characters
D M198 (command for
calling a program from
within an external
input/output unit)
D Custom macro
D M99