Rockwell Automation 1771-DB Basic Module User Manual - Series A - Manual (Page 44)

Operating Functions
Chapter 5
5–7
Action
Taken: If you stop a program by typing a Control C on the
console
device or by execution of a STOP statement, you can resume
execution of the program by typing
CONT. If you enter a Control C
during the execution
of a CALL routine you cannot CONTinue.
Between
the stopping and the re-starting of the program you may
display the values of variables
or change the values of variables.
However, you cannot CONTinue if
the program is modified during
the STOP or after
an error.
Example:
u10 FOR I=1 TO 10000
u20 PRINT I
u30 PRINT I
u40 END
uRUN
1
2
3
4
5– (TYPE CONTROL
C ON CONSOLE)
STOP – IN LINE 20
READY
uPRINT I
6
uI=10
uCONT
10
11
12
Action
taken: The LIST command prints the program to the console
device. Spaces are inserted after the line number, and before
and after
statements.
This helps in the debugging of BASIC Module programs.
You can
terminate the “listing” of a program at anytime by typing a
Control
C on the console device. You can interrupt and continue the
listing using Control S and Control Q.
5.3.2
Command: CONT
5.3.3
Command: LIST