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CHAPTER 7 TROUBLESHOOTING
7
7.4 Error Codes
7.4.1 Checking error codes
(2) Checking an error on the MELSECNET/H (MELSECNET/10 mode) remote I/O
station
Open the “System monitor” window to identify the module where the error has occurred.
(a) When an error has occurred in the MELSECNET/H remote I/O module
Check the error in the "PLC diagnostics" window.
[Diagnostics] [PLC diagnostics]
If an error has occurred before the MELSECNET/H (MELSECNET/10 mode) remote I/O station receives the
clock data from the remote master station, the corresponding error time is displayed as January 1, 2000, 0:0:0.
If the communications are interrupted due to cable disconnection or any possible cause, the clock data will no
longer be updated.
The error time stored starts from "January 1, 2000 at 00:00:00".
For example, "January 1, 2000 at 12:00:00" indicates that the error occurred 12 hours after the power-on.