Mitsubishi Electric MELSEC iQ-R Series User Manual page 170

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
Data link is normal but link device communications fail
When the data link is normal (D LINK LED: On) but the link device communications fail, check the following items.
Check item
Is "Reserved/Error Invalid Station" of the device station set to "Reserved
Station" in "Network Configuration Settings" of the master station?
Is the input/output bit setting or input/output word setting of the device station
set in "Network Configuration Settings" of the master station? (Simple display)
Are "RX Setting", "RY Setting", "RWw Setting", "RWr Setting", "LB Setting",
and "LW Setting" of the device station set in "Network Configuration Settings"
of the master station? (Detailed display)
Does the device station support the link devices set in "Network Configuration
Settings" of the master station?
Is the link refresh setting range correct?
Is the refresh range of "CPU Side" in "Refresh Settings" duplicated with that of
"CPU Side" of another network module?
Is the transfer range set in "Interlink Transmission Settings" correct?
Are the settings in "Transfer Source Module" and "Transfer Destination
Module" of "Interlink Transmission Settings" correct?
When the local station cannot receive cyclic data from another station, is
"Communication Mode" of the master station set to "Multicast"?
4 TROUBLESHOOTING
168
4.4 Troubleshooting by Symptom
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 standard Ethernet device to a local station or remote station
that supports the multicast filter.
• Set unicast mode.
• Take actions so that the Ethernet device does not receive cyclic data in
multicast mode.
• Connect the standard Ethernet device to a local station or remote station
that supports the multicast filter.
• Set unicast mode.
• Take actions so that the Ethernet device does not receive cyclic data in
multicast mode.
• 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.
Action
Set "Reserved/Error Invalid Station" of the device station to "No Setting".
Set a link device used in the device station correctly.
Set a link device used in the device station correctly.
Correct the link devices to be assigned to the device station in "Network
Configuration Settings" of the master station.
Correct the setting in "Refresh Settings" of "Basic Settings".
Correct the setting in "Refresh Settings" of "Basic Settings".
Correct the transfer range set in "Interlink Transmission Settings".
Correct the settings in "Transfer Source Module" and "Transfer Destination
Module" of "Interlink Transmission Settings".
Set "Communication Mode" of the master station to "Multicast".