Troubleshooting By Symptom - Mitsubishi Electric MELSEC iQ-F Series User Manual

10.5

Troubleshooting by Symptom

The troubleshooting measures for each symptom during EtherNet/IP communication are shown below. If an error has
occurred in the FX5-ENET/IP, identify the error cause using the GX Works3. (Page 109 Checking the Module Status)
Communications with EtherNet/IP devices cannot be performed
The following table lists the actions to be taken if communications with EtherNet/IP devices cannot be performed.
Check item
Is the RUN LED of the FX5-ENET/IP off?
Is the Ethernet cable connected correctly?
Is the EtherNet/IP device compatible with the FX5-ENET/IP communication
functions (Class1 communications, Class3 communications, and UCMM
communications)?
Is the power supply of the EtherNet/IP device on?
Has an error occurred on the EtherNet/IP device, switching hub, or a similar
device?
Is the IP address setting of the EtherNet/IP device correct?
Is the mode setting of the FX5-ENET/IP a value other than "Online"?
Has the initial processing completed successfully?
Has communication start processing been performed correctly with 'EtherNet/
IP communication start request' (Un\G37.b0)?
Is the EtherNet/IP device connected ahead of the router?
Has a timeout error occurred on the connection that performs communications
normally?
If the above actions do not solve the problem, perform the hardware test to check for hardware failure. (Page 119
Hardware Test)
FX5-ENET/IP cannot connect to EtherNet/IP Configuration Tool for FX5-ENET/IP
The following table lists the actions to be taken if the FX5-ENET/IP cannot connect to EtherNet/IP Configuration Tool for FX5-
ENET/IP (personal computer).
Check item
Are the IP address settings for the FX5-ENET/IP and the personal computer
to connect correct?
Is the RUN LED of the FX5-ENET/IP off?
Can network diagnostics be performed? (Page 116 Checking the Network
Status)
If the above actions do not solve the problem, perform the hardware test to check for hardware failure. (Page 119
Hardware Test)
10 TROUBLESHOOTING
120
10.5 Troubleshooting by Symptom
Action
If the RUN LED is off, reset the CPU module. If resetting does not cause the
RUN LED to turn on, a hardware failure may have occurred. Replace the FX5-
ENET/IP and restart the connected EtherNet/IP device.
• Connect the Ethernet cable again.
• Perform a PING test to check the connection with the EtherNet/IP device.
Check the specifications of the EtherNet/IP device.
Turn on the power supply of the EtherNet/IP device.
If an error has occurred on the EtherNet/IP device, switching hub, or a similar
device, check the manual of each device.
Perform a PING test to check the connection with the EtherNet/IP device.
(Page 118 PING test)
Set the mode setting of the FX5-ENET/IP to "Online" using the GX Works3.
Check whether communication is starting after 'Module ready' (Un\G34.b0)
turns on.
• 'Check that 'EtherNet/IP communication start request' (Un\G37.b0) is on.
• 'If 'EtherNet/IP data link continuation specification' (Un\G5004) is set to "16:
continue EtherNet/IP communication", turn 'EtherNet/IP communication
start request' (Un\G37.b0) on again.
Communication through the router cannot be established. Reexamine the
connection of the EtherNet/IP device.
Depending on the EtherNet/IP device used, the connection that performs
communications normally may be disconnected and a timeout error may occur
after the time specified by Encapsulation Inactivity Timeout has elapsed.
Therefore, set Encapsulation Inactivity Timeout to 0 (invalid). (Page 158
TCP/IP Interface)
Action
Set the IP addresses so that they have the same class and subnet address.
If the RUN LED is off, reset the CPU module. If resetting does not cause the
RUN LED to turn on, a hardware failure may have occurred. Replace the FX5-
ENET/IP and restart the connected EtherNet/IP device.
Check that 'EtherNet/IP communication start request' (Un\G37.b0) is on.