Mitsubishi MELSEC L Series User Manual page 98

(b) Module detailed information
When the I/O ERR.LED turns on or an error occurs in any intelligent function module, check the error in the
system monitor of the programming tool and remove the error cause.
[Diagnostics]
For details on the module detailed information, refer to the following.
MELSEC-L CPU Module User's Manual (Built-In I/O Function)
User's manual for the intelligent function module used
96
[System Monitor...]
1.
Select the error module in "Main Block" and click
the
2.
Detailed information of the selected module is
displayed.
button.