Troubleshooting; Error Codes; Error Code Storage Area - Mitsubishi MELSEC AJ65BT-R2 User Manual

10 TROUBLESHOOTING

10. TROUBLESHOOTING
The details of the errors that occurs when using the R2, and the troubleshooting
methods are explained in this chapter.

10.1 Error codes

The error codes stored in the R2 buffer memory are explained.

10.1.1 Error code storage area

When an error occurs in the R2, programmable controller CPU or master module, an
error code is stored in the error code storage area of the R2, which is classified by
function, and the ERR. LED turns ON.
Up to eight error codes that have occurred in the past are stored in order of occurrence
in the error code history ( R 2 1A8
not stored.)
The ERR. LED is turned OFF, and the error code storage area is cleared by turning
the error reset request signal (RY(n+1)A) ON.
If an initial data read request signal (RY(n+1)9) error occurs, the error handling will
not be carried out even if the error reset request signal (RY(n+1)A) turns ON.
Address Name
1A8 to 1AF
R 2 Error code history
H H
R 2 1B0 General error code
H
Error code at
1B1
R 2
H
transmission
Error code at
1B2
R 2
H
reception
Error state
(RX(n+1)A)
Any error occurrence
Error reset request
(RY(n+1)A)
POINT
to 1AF ) (The ninth and following error codes are
H H
Error code storage buffer memory
Up to eight error codes that occurred in the past
are stored in order of occurrence.
The error code that occurs when the initialization
error complete signal (RXn5), EEPROM function
error complete signal (RXn8) turns ON or at the
transmission timeout is stored.
The error code that occurs when the transmission
error complete (RXn1) turns ON is stored.
The error code that occurs when the reception
error read request (RXn3) turns ON is stored.
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