13.2 Troubleshooting
13.2.1 If ERROR LED is Flashing
Condition: The self-diagnostic error occurs
Procedure 1
Check the error contents (error code) using the programming tool.
Using FPWIN GR
With the FPWIN GR, if a PLC error occurs during programming or debugging and the RUN mode is
changed to the PROG. mode, the following status display dialog box is displayed automatically. Check
the contents of the self-diagnosed error.
Status display dialog box
If the error is an operation error, the error
address can be confirmed in this dialog
box.
After correcting the error, click on the
“Clear Error” button to clear the error.
Key Point:
To display the status display dialog box, select “Status Display” under “Online” on the menu bar.
Procedure 2
<For error code is 1 to 9>
- Condition
There is a syntax error in the program.
- Operation 1
Change to PROG. mode and clear the error.
- Operation 2
Execute a total-check function using FPWIN GR to determine the location of the syntax error.
<For error code is 20 or higher>
- Condition
A self-diagnostic error other than a syntax error has occurred.
- Operation
Use the programming tool in PROG. mode to clear the error.
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