Net Loss

What does F71 mean?

The drive has lost communication with its external network adapter or the network itself has failed. This means the drive is no longer receiving commands or transmitting status via the network, preventing remote control and monitoring.

• Interruption of the Ethernet cable connection between the drive's network adapter and the network switch or PLC.
• Network switch failure or power loss to the switch, disrupting communication to the drive.
• Incorrect IP address, subnet mask, or gateway settings in the drive's network parameters (e.g., P9-01, P9-02, P9-03).
• PLC or HMI controller program logic stopped or failed, ceasing communication requests to the drive.
• The drive's network interface module (NIM) has failed or is incorrectly seated.

Click steps to track your progress.

1. 1

   Verify the physical Ethernet cable connection between the drive's network adapter and the network switch/PLC, ensuring secure seating.

2. 2

   Confirm that the network switch is powered on and functioning, observing link status LEDs (e.g., green/amber activity lights).

3. 3

   Ping the drive's configured IP address (e.g., P9-01) from a laptop to test basic network connectivity.

4. 4

   Check network configuration parameters (e.g., P9-01 IP Address, P9-02 Subnet Mask) in the drive and compare with the network architecture.

5. 5

   Review the PLC or HMI program to ensure communication instructions to the drive are active and correctly addressed.