Outline of Operation Procedure Section 3-4
43
10. Monitor/ Debug
10-1 Monitor
Monitor I/O bit status and PV.
Execute force-set/reset, trace, online edit, and others.
10-2 Program Check by Break
Set break points and I/O break conditions in the ladder diagram as
required and stop the program step by step to monitor the contents
of I/O memory.
Refer to 4-3 Step Run and Break.
10-3 Cycle Time Monitor
Confirm the virtual cycle time so that the program execution time on
the actual PLC is within the permissible range.
10-4 Task Operation Check
Check the number and time of the task execution in the [Task Con-
trol] window. If an interrupt task exists, execute the program with the
interrupt timing changed to check the interrupt operation.
Refer to 4-4 Task Debugging.
10-5 Serial/ Network Communications
Display the contents of serial/network communications to debug with
actual communications.
Refer to 5 Debugging Serial Communications and
6 Debugging Network Communications.
11. Debugging by Virtual External Inputs
11-1 Generating Virtual External Inputs
Create data/program for virtual external inputs.
Refer to 8-3 Generating Virtual External Inputs.
11-2 Virtual Run
Generate virtual external inputs using the created data/program to
virtually run the ladder diagram in more actual way.
Refer to 8-4 Running by Virtual External Inputs.
11-3 Check Results
Check the results of the virtual run by the time chart monitor or
spreadsheet software.
Refer to 8-5 Checking the Result
12. Switching to the actual PLC
Disconnect the Simulator and check the program again with the actual
PLC connected.
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