Mitsubishi Electric MELSEC iQ-R Series User Manual page 144

Check item
Is the IP address overlapped with another station?
Are more than the total number of device stations
connected?
Are Ethernet devices properly connected to a
network line?
Is the IP address of the device station blocked by
the IP filter setting of the master station?
Is the IP address of the master station blocked by
the IP filter setting of the device station?
Are time synchronization devices with time
synchronization priority of 0 to 15 connected?
Is the TSN hub connected normally?
When the L ER LED turns on
When the L ER LED turns on, check the following.
Check item
Are the Ethernet cables used normally?
Is the switching hub used operating normally?
Is there any source of noise near the module or
cables?
4 TROUBLESHOOTING
142
4.1 Checking with LED
Action
Change the IP address of the overlapped station.
Change the connection of the device stations to the total number or less.
Correct the mixed structure of the Ethernet device. For details, refer to "SYSTEM CONFIGURATION" (in
the chapter of the control mode used) of the following manual.
MELSEC iQ-R Motion Module User's Manual (Startup)
Correct the "IP Filter Settings" under "Application Settings".
Remove time synchronization devices with time synchronization priority of 0 to 15, or change the priority
setting to between 16 and 255. ( Manual for the time synchronization devices used)
Power off and on the TSN hub.
Set the TSN hub parameters as follows.
• Enable each port of the TSN hub.
• Set the communication speed and port type to Auto.
• Match the settings of the time synchronization and communication cycle of the TSN hub to those of the
master station.
• Match the VLAN setting of the master station to the VLAN setting of the device station.
For the setting method, refer to the manual for the TSN hub used.
Action
• Use an Ethernet cable that conforms to the standard. For details, refer to "Wiring" (in the chapter of the
control mode used) of the following manual.
MELSEC iQ-R Motion Module User's Manual (Startup)
• Set the station-to-station distance within range. For details, refer to "Wiring" (in the chapter of the
control mode used) of the following manual.
MELSEC iQ-R Motion Module User's Manual (Startup)
• If the Ethernet cable is disconnected, reconnect it.
• Use a switching hub that conforms to the standard. For details, refer to "Wiring" (in the chapter of the
control mode used) of the following manual.
MELSEC iQ-R Motion Module User's Manual (Startup)
• Power off and on the switching hub.
Change the location of the module or cables.