110 96-8000
June 1999
OPERATION
BACKGROUND E DIT
As a standard feature, this machine is shipped with a BACKGROUND EDIT capability. With BACKGROUND
EDIT, you may edit a program in memory while any other program is being run. BACKGROUND EDIT can be
enabled and disabled by Parameter 57.
BACKGROUND EDIT is selected from MEM mode when in PROGRAM DISPLAY by typing Onnnnn for the
program you want to edit and pressing F4. If you do not enter the Onnnnn, you will instead get the PROGRAM
REVIEW display.
While in BACKGROUND EDIT, you may perform any of the operations available in the EDIT mode. The last five
lines of the CRT will, however, display the status of the running program and the top line will show the name
and line number of the running program.
Selecting any other display or pressing F4 will exit from BACKGROUND EDIT. In order to list the programs that
are in memory, a display function is available to view the program memory list while a program is running. This
display is called LIST. It is selected by pressing the LIST PROG button while a program is running. The display
is just like the LIST PROG mode display but it does not allow any send, receive, copy, select, or erase func-
tions.
The CYCLE START button may not be used while in BACKGROUND EDIT. If the program contains an M00
stop, you must exit BACKGROUND EDIT and then press CYCLE START to resume the program.
All of the changes made during BACKGROUND EDIT are saved in a different memory area until the running
program stops. This means that you can even edit the program that is running, or any of its subprograms, and
those changes will not affect the running program.
The first time you select a program for BACKGROUND EDIT, you will get the message PROG EXISTS if the
program is already in memory or NEW PROG if it is not. The NEW PROG message means that the program is
being created and will be initially empty. In either case, you will then be able to edit that program. The second
time you select a program for BACKGROUND EDIT without stopping the running program, you will get the
message SECOND EDIT.
When you are in BACKGROUND EDIT and the running program finishes, the display will automatically change
to the PROGRAM DISPLAY and will show the program that just finished running. To continue editing your
program, you must select it with LIST PROG and then display it in EDIT mode.
BACKGROUND EDIT is not available from MDI or from DNC operating modes
DELETING P ROGRAMS
To delete an existing program, you must be in LIST PROG mode. The programs will be listed here by program
number. Use the CURSOR up or down keys to highlight the program number, or type in the program number
at the blinking cursor, then press the ERASE PROG key.
All the programs in the list may be deleted by selecting ALL at the end of the list and pressing the ERASE
PROG key. Use caution when deleting single programs, and read all prompts, to ensure that ALL programs are
not selected. The UNDO key will not recover programs that are deleted.
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