Network Diagnostics (Network Monitor) - Mitsubishi Electric Q Series Reference Manual

8 TROUBLESHOOTING

8.1 Network Diagnostics (Network Monitor)

Network diagnostics
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The status of the MELSECNET/H can be checked using the network diagnostic
function of GX Developer.
When an error occurs, the faulty station can be identified using the host information,
other station information, and error history monitor functions of the network.
The following lists the items that can be checked with the network diagnostic function.
Module 4
Module 3
Module 2
Module 1
Host information
[Network information]
• Network type
• Network No.
• Group No.
• Station No.
[Link information]
• Mode
• Forward loop status (including loopback station)
• Reverse loop status (including loopback station)
• Link scan time (maximum, minimum, current)
[Communication information]
• Communication status
Other station
information
Network monitor details
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[Network information]
• Network type
• Module No.
• Network No.
• Group No.
• Station No.
[Other station information]
• Communication status of each station
• Data-link status of each station
• Parameter status of each station
• CPU operation status of each station
• CPU RUN status of each station
• Loop status of each station
• Reserved station designation of each station
• PSU operation status of each station extension
• Search status of local station error
• Each station PLC operation mode status
• Each station paring status
• Each station PLC system status
• Each station network type status
[Network information]
• Network type
• Module No.
• Network No.
• Group No.
• Station No
[Control station information]
• Assign control station
• Present control station
• Transmission information
• Sub-control station transmission
• Remote I/O master station No. (block 1, block 2)
• LX/LY Allocations
[Data link information]
• Total number of linked stations
• Station of maximum normal transmission
• Station of maximum data link
• Transmission status
• Reason for transmission interruption
• Reason for transmission stop
MELSEC-Q
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