Error Codes - Mitsubishi Electric Q Series Reference Manual

8 TROUBLESHOOTING

8.3 Error Codes

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When data linking cannot be performed using the cyclic transmission, or when
communication cannot be performed normally using the transient transmission with an
instruction of a sequence program or GX Developer, the error codes (hexadecimal) are
stored in the link special register or displayed on the GX Developer's system monitor.
(1) Error code storage when data linking cannot be performed
When data linking cannot be performed in the cyclic transmission, the following
link special registers should be checked.
1) SW0048: Cause of baton pass interruption
2) SW0049: Cause of data link stop
3) SW0055: Parameter setting status
(2) Checking error codes with GX Developer
The code of the error occurred in the network module can be checked on the
Module's Detailed Information screen displayed from "System Monitor". Change
the designation of the connection destination to check other programmable
controllers on the network.
Check the device data described in item (3) on the next page to see the error
codes of the transient instructions by the sequence programs.
MELSEC-Q
Displays the latest error code.
Displays error history.
Displays the description of the error code
selected in error history and action against
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