Mitsubishi Electric Melsec QJ71LP21 Reference Manual page 419

8 TROUBLESHOOTING
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(2) Checking with GX Works2
Error codes that are corresponding to the errors occurred in network modules
can be checked by following either procedure (a) or (b) described below.
(a) Checking on the "Module's Detailed Information" screen
Error code, error contents, and corrective action are displayed.
On GX Works2, select [Diagnostics]
the Detailed Information button.
REMARKS
By changing parameters set in transfer setup of GX Works2, error codes of other
programmable controller in the network can also be checked.
MELSEC-Q
[System Monitor], and then click
Displays the latest error code.
Displays error history.
Displays description of the error code that
is currently selected under Error history
and corrective action for the error.
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