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MELSEC-Q
8 TROUBLESHOOTING
…………………………Section 7.9
Error history details
Error history monitor
Network test
……………………………Section 4.10.4
…………………………………Section 4.10.1
…………………………Section 4.10.2
From previous page
[Status of self station]
• Parameter setting
• Reserved station setting
• Transmission mode
• Duplex transmission setting
• Duplex transmission status
[Clear type]
Retry counter clear, etc,
[Loop switching] Number of occurrences
[Transient transmission] Number of occurrences
[Forward loop]
• Retry
• Line trouble
• Communication error (UNDER, CRC, OVER, etc.)
[Reverse loop]
• Retry
• Line trouble
• Communication error (UNDER, CRC, OVER, etc.)
[Network information]
Clear error history
Setup confirmation test
Loop test
Communication test
• Network Type
• Network No.
• Group No.
• Station No.
• Network Type
• Module No.
• Network No.
• Group No.
…………………………Section 4.10.3
Station order check test
[Network information]
• Module No.
[Loop switching]
Station No., Factor, Switched to
[Transient transmission error]
Err. code, Error type
• Station No.