Cause : Ethernet communication fault comes when ethernet communication is interrupted by physical factors while Pr.1431 Ethernet signal loss detection function selection = "3" or Pr.1457 Extended setting for Ethernet signal loss detection function selection = "3".

1. The inverter output is shut off if Ethernet communication is broken for the time set in Pr.1432 Ethernet communication check time interval or longer for all devices with IP addresses in the range specified for Ethernet command source selection (Pr.1449 to Pr.1454).
2. When the CC-Link IE Field Network Basic is used, the inverter output is shut off in the following cases: the data addressed to the own station is not received for the predetermined timeout period or longer, or the status bit of the cyclic transmission addressed to the own station turns OFF.
3. Check for a break in the Ethernet cable.