Mitsubishi QJ71LP21 User Manual

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MELSEC-Q
8 TROUBLESHOOTING
8.1 Network Diagnostics (Network Monitor)
The status of the remote 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.
GX Developer network diagnosis can be implemented for the remote master station
and remote I/O station
1.
1: Use GX Developer Version 6.01B or later when executing network diagnosis from
the remote I/O station.
The following lists the items that can be checked with the network diagnostic function.
Host information
[Network information]
• Network type
• Network No.
• Group No.
• Station No.
[Link information]
• Mod
• Forward loop status (including loopback station)
• Reverse loop status (including loopback station)
• Link scan time (maximum, minimum, current)
[Communication information]
• Communication status
Network diagnostics
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.
[Remote master station information]
• Assign remote master station
• Present remote master station
• Transmission information
• Remote sub-master station communication
• Remote I/O master station number (block 1, block 2)
• LX/LY alocations
[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
2
2
2
2: When PLC to PLC network is diagnosed,
this information is effective.
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Mitsubishi QJ71LP21 Specifications

General

Brand	Mitsubishi
Model	QJ71LP21
Category	Controller
Language	English