1.2.2 LED Displays When PLC Operates
The state of the PLC can be confirmed from the lighting state of the LEDs when the PLC is
operating. The PLC states indicated by the LEDs are as follows.
MS (Module status indicator) <Green/Red>
LED display
LED OFF
Green ON
Green Flashing
Red ON
Red Flashing
NS (Network status indicator) <Green/Red>
LED display
LED OFF
Green ON
Green Flashing
Red ON
Red Flashing
PLC state
The EtherNet/IP function is disabled.
The EtherNet/IP function is normally activated.
This state does not exist.
Unrecoverable fault occurs.
Recoverable fault occurs. (such as a setting that load factor exceeds)
PLC state
The EtherNet/IP function is disabled or IP address is not established.
More than one connection is established.
Connection is not established, but IP address is acquired.
IP address duplication is detected.
This state does not exist.
1.2 Names and Functions of Parts
1-5