Step Run and Break Section 4-3
114
Operation when I/O Break Condition Met
Continuous Run with I/O break condition set is executed in the diagram below.
I/O break condition holds when the content of DM00000 that is incremented by
one-second pulse becomes equal to or greater than #7FFF while both values
of IO0.0 and H1.15 are ON, and the ladder diagram execution breaks.
I/O break condition setting expression:
(IO0.0=ON and H1.15=ON) and (DM0>=#7FFF or A401.08=ON)
For example, if the break occurs when the DM00000 count is completed
(Shown by the left arrow in the above diagram), the I/O break line is displayed
on the next line in the [Step Run] window and the program pauses.
In addition, continuing the running in this condition will cause the execution to
pause again in the following case: (1) the I/O break condition expression
changes "true"Æ"false"Æ"true," or (2) the values of each condition expression
change within the range where the condition expression holds.
Note
1. Do not perform online editing while setting I/O break conditions. Doing so
may cause the same operation (i.e. Scan Replay or enter the Program
mode) as the case where performing online editing when Step Run.
2. If Continuous Run/Scan Run/Continuous Scan Run is performed while
setting I/O break conditions, clicking the Step Run/Pause button may
cause the execution to pause halfway in the scan. (Usually stops on the
top.)
0000
00
0000
01
H001
15
0001
00
END
W000
00
++
1s
D0
TIM
401
08
0000
#0020
T0000
0001
15
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