Mitsubishi Electric MELSEC L Series User Manual page 104

Error
code
[WDT ERROR]
• I/O refresh processing time exceeded 200ms. Momentary
5000
power failure occurs frequently.
■Supplementary information
• Common information: Time (200ms)
• Individual information: Time (value actually measured)
5001
■Diagnostic timing
• Any time
[NETWORK ERROR]
A CC-Link IE Field Network error has occurred.
■Supplementary information
9900 • Common information: -
• Individual information: -
■Diagnostic timing
• Any time
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Error and cause
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Modify the power supply system to prevent momentary power failure.
• Check the details of the error by executing the CC-Link IE Field Network
diagnostics, and take action.
• In the system error history on the "System Monitor" window, check the error
code of the network error detected at the time.
Action