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7.4 Error Codes
When an error such as a data link failure occurs, the cause can be identified by error codes.
7.4.1 Checking error codes
GX Developer or GX Works2 is used to check error codes.
In addition, error codes can be checked in the link special register (SW) or with the completion status of the dedicated
instructions.
(1) Checking an error on the remote master station
An error can be checked in the "PLC diagnostics" window of GX Developer.
[Diagnostics] [PLC diagnostics]