"NS" status LEDs (network status)/"L41"/"L23.2"

The "NS" status LED (corresponds to "L41" or "L23.2" status LED) is present in all controllers.

LED

Meaning

Measure

–

Off

Device is switched off.

No DC 24 V supply.

  • Check the DC 24 V voltage supply.
  • Switch on the device again.

The IP address is not set.

  • Set the IP address.

Green

Flashing

The connection to the Ethernet master has failed.

The device does not detect a connection to the Ethernet master (bus error).

  • Check the Ethernet connection of the device.
  • Check all Ethernet connections.

Green

Illuminated

The IP address is set. The Ethernet connection has been established.

–

Red

Flashing

Timeout delay of the controlling connection has expired.

The state is reset by restarting communication.

  • Check the fieldbus connection.
  • Check the master/scanner.
  • Check all Ethernet connections.

Red

Illuminated

Conflict detected in IP address assignment.

  • Check whether there is another device with the same IP address in the network.
  • Change the IP address of the device.
  • Check the DHCP settings for IP address assignment of the DHCP server (only when using a DHCP server).

Red/green

Flashing

The device performs a LED test.

This state may only be active for a short time during startup.

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