Mitsubishi MELSEC LJ71C24, User Manual

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15 TROUBLESHOOTING
15.2 Error Code
When a trouble such as external device communication failure has occurred, the error
cause can be identified by an error code.
15.2.1 How to check the error codes
Error codes can be checked on GX Works2. (Refer to (1) in this section.)
REMARKS
By using GX Works2, error history of the entire system can be checked even after
errors were cleared by turning the power off to on, or by resetting the CPU module
or the head module. (Refer to (1) (b) in this section.)
(1) Checking with GX Works2
Error codes that are corresponding to the errors occurred in the C24 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] [System Monitor] and click the
Detailed Information button.
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.