Chapter 33 Troubleshooting Procedure - Mitsubishi Electric MELSEC iQ-R Series User Manual

33
TROUBLESHOOTING PROCEDURE
This section describes errors that may occur during system operation, error causes, and actions to be taken.
For the troubleshooting specific to each module, refer to the manual for the module used.
Saving the program and devices at the time of an error helps to analyze the error cause.
For reading data from the programmable controller, refer to the following.
 GX Works3 Operating Manual
When the system has any trouble, perform troubleshooting in the following order.
1.
Check the LED status of the power supply module.
( MELSEC iQ-R Module Configuration Manual)
2.
Check the LED status of the CPU module. ( Page 533 LED status of the CPU module)
3.
Check the LED status of each I/O module and intelligent function module. ( User's Manual (Application) for the
module used)
4.
Connect an engineering tool, and execute the system monitor function. The error module can be identified. ( Page
534 System monitor)
5.
Select the error module, and execute the module diagnostics function. The error cause and the action to be taken can be
displayed. ( Page 534 Module diagnostics)
6.
If the error cause cannot be identified by the module diagnostics, check the executed operations and detected error logs
on the event history window. ( Page 535 Event history)
7.
If the error cause cannot be identified in steps 1 to 6, perform troubleshooting by symptom. ( User's Manual
(Application) for the module used)
33 TROUBLESHOOTING PROCEDURE
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