Mitsubishi Electric MELSEC iQ-R Series User Manual page 397

Communications with Ethernet devices failed
When communications with Ethernet devices cannot be performed, check the following items.
Check item
Is the firewall or proxy server setting enabled on the
Ethernet device?
Is the antivirus software on the Ethernet device
blocking the communication?
In multicast mode, is a standard Ethernet device
connected to the master station?
In multicast mode, is a standard Ethernet device
connected to a local station or remote station that
does not support the multicast filter?
In multicast mode, are a local station and an Ethernet
device connected on the end side via a switching
hub?
For details on when communication using the engineering tool is not allowed in the settings of Windows Firewall, refer to the
following.
 GX Works3 Operating Manual
If the above actions do not solve the problem, perform the module communication test to check for hardware failure. (
Page 371 Module Communication Test)
Action
Check and correct the settings on the Ethernet device.
Is a response to the PING command (ICMP echo request) disabled?
Check and correct the antivirus software settings on the Ethernet device.
• Is the security setting level of the antivirus software low?
• Is a response to the PING command (ICMP echo request) disabled in the firewall settings?
• Connect the local station or remote station supporting the multicast filter to the standard Ethernet
device.
• Set unicast mode.
• Take actions so that the Ethernet device does not receive multicast cyclic data.
• Connect the local station or remote station supporting the multicast filter to the standard Ethernet
device.
• Set unicast mode.
• Take actions so that the Ethernet device does not receive multicast cyclic data.
• Configure settings with the switching hub so that the multicast frame (with multicast MAC address
09:00:70:00:10:02 and 09:00:70:00:10:05) will not be transferred to the port of the standard
Ethernet device.
• Check the connected device and do not connect both a local station and an Ethernet device on the
end side of the switching hub.
• Set unicast mode.
• Take actions so that the Ethernet device does not receive cyclic data in multicast mode.
18 TROUBLESHOOTING BY SYMPTOM
18.1 Troubleshooting Related to CC-Link IE TSN
18
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