Mitsubishi Electric MELSEC iQ-RJ71EN71 User Manual page 251

■Stations which cannot be set as a temporary error invalid station
The temporary error invalid station setting is not available for the following stations.
• A slave station for which the reserved station setting is temporarily canceled
• A submaster station
■Setting a temporary error invalid station in line topology
In the following case, even if a data link error occurs in the station set as an error invalid station, the station is not detected as
a data link faulty station. However, subsequently connected stations are detected as data link faulty stations.
■Parameter setting
"Network Configuration Settings" of "Basic Settings" does not reflect temporary error invalid station setting.
■When the master station is reset or the system is powered off
The temporary error invalid station setting is ignored, and the slave station returns to the status set in "Network Configuration
Settings" of "Basic Settings of the master station.
■When a temporary error invalid station is disconnected from the network
The following status differs between the master station and local stations after the CPU module on the master station is reset
or the system is powered off.
• ERR LED status
• SW00E0 to SW00E7 ('Temporary error invalid station setting status')
The difference can be corrected by the following procedure.
1.
Reconnect the disconnected station.
2.
Configure the temporary error invalid station setting, and cancel the setting.
■Checking the station number of an error invalid station
The station number of an error invalid station can be checked in the "Enable/Disable Ignore Station Errors" window.
■When a system switching monitoring target station is set as temporary error invalid station
The temporary error invalid station setting can also be performed on system switching monitoring target stations. When a
system switching monitoring target station is set as a temporary error invalid station, the settings for system switching
monitoring target station become invalid and that station will no longer issue a system switching request even if a
communication error occurs.
When the temporary error invalid station settings have been disabled, the station starts functioning as a system switching
monitoring target station again.
■For execution in a redundant line configuration
Enable/disable temporary error invalid station setting for stations on the networks of both systems. When this has been
executed only for a station on the network of one system, since temporary error invalid station setting has not been enabled/
disabled for a station on the network of the other system, if system switching occurs, the state of not having enabled/disabled
temporary error invalid station setting arises.
Error invalid station
Not a data link faulty station
Error
Data link faulty stations
4 TROUBLESHOOTING
4.3 Checking the Network Status
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