Waiting for communication

What does A01796 mean?

The system is actively waiting for communication, likely with the F host. This alarm indicates a potential disruption or delay in the communication link, preventing the inverter from receiving necessary commands or operational data from the host controller.

• Missing or intermittent communication link between the drive and its higher-level controller (e.g., safety PLC, motion controller, HMI).
• Incorrect network configuration (e.g., IP address, PROFIBUS address, PROFINET device name) preventing the drive from establishing communication with the host.
• Communication cable damage (e.g., broken wires, poor shielding) leading to data loss or no connection.
• The F host (e.g., safety PLC) is not powered on, not running, or has not initiated communication with the drive.

Click steps to track your progress.

1. 1

   1. Verify the physical connection of the communication cable (e.g., Ethernet, PROFIBUS) between the drive and the F host, checking for secure connectors.

2. 2

   2. Confirm that the F host (e.g., PLC) is powered on, in run mode, and configured to communicate with the drive (e.g., check network diagnostics on PLC).

3. 3

   3. Check the network configuration parameters in the drive (e.g., p88xx for PROFINET, p918 for PROFIBUS address) and ensure they match the host controller's settings.

4. 4

   4. Use network diagnostic tools (e.g., ping test, bus analyzer) to check for communication integrity and identify packet loss or errors.

5. 5

   5. Cycle power to both the drive and the F host to re-initialize communication interfaces.