Cause : Network error comes when the connected option card detected an error or a disruption in communication between the card and the main system.

"er4" fault in Fuji FRENIC-VG drive "Network error". This means the drive has detected a problem with the communication between the drive and the network option card.

Troubleshooting Steps:

1. Check the Option Card Installation:

   • Ensure that the option card is properly seated in its slot and that all connections are secure.
   • Inspect the card for any visible signs of damage or defects.

2. Verify Wiring and Connections:

   • Check all cables connecting the option card to the network. Ensure they are properly connected and free from damage.
   • Verify that the correct type of cables is being used for the network protocol.

3. Review Network Settings:

   • Verify that the drive’s network settings and the option card configuration are correct. This includes IP addresses, baud rates, and other protocol-specific parameters.
   • Ensure that the settings are compatible with the network to which the drive is connected.

4. Update Firmware:

   • Check if there are any firmware updates available for the drive and the option card. Updating to the latest firmware can resolve compatibility and communication issues.
   • Follow the manufacturer’s instructions carefully when performing firmware updates.

5. Test the Option Card on Another Drive:

   • If possible, test the option card on another compatible drive to determine if the issue is with the card itself or with the original drive.
   • Alternatively, try using a different option card in the original drive to see if the problem persists.